The volume of the cylinder will be 7.76 cubic cm. Then the diameter of the cylinder will be 0.88 cm.
What is the volume of a right circular cylinder?Let r be the radius and h be the height of the cylinder. Then the volume of the cylinder will be
V = π r²h cubic units
A cylindrical glass tube 12.7cm in length is filled with Mercury. The mass of Mercury needed to fill the tube is 105.5 grams.
We know that the density of Mercury is 13.59 grams per cubic cm. Then the volume of the Mercury will be
13.59 = 105.5 / V
V = 7.76 cubic cm
Then the radius of the cylinder will be
V = π r²h
7.76 = 3.14 x 12.7 x r²
r = 0.44 cm
Then the diameter of the cylinder will be
d = 2r
d = 2 x 0.44
d = 0.88 cm
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What multiplicities are observed for the signals in the off-resonance decoupled 13c nmr spectrum of 1-chloropropadiene?
13c nmr spectrum of 1-chloropropadiene is two singlet and 1 doublet.
Nuclear Magnetic Resonance NMR spectroscopy is the use of NMR phenomena to study the physical, chemical, and biological properties of matter Carbon-13 is used in NMR because it has an odd mass number. this means that it has a property called spin and behaves a bit like a bar magnet when placed in an external magnetic field. because of this, carbon-13 atoms show up in NMR spectra.1-chloropropadiene structure
1-chloropropadiene structure are Cl-C=C=C two singlet and 1 doublet signals are seen.
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The property of water whereby molecules tend to stick to objects is called? cohesion surface tension dissolving ability adhesion viscosity
The property of water whereby molecules tend to stick to objects is called adhesion. The correct option is d.
What is adhesion?Adhesion is a property of a molecule to join its molecule with the surface of the other object. This happens due to the attraction of force between the surface of two substances.
So, when water molecules stick to the surface of other objects, it is adhesion. When the water molecules are attracted towards is called cohesion. This happens with water due to the reason that water is a polar substance.
Thus, the correct option is d. adhesion.
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H2po4-1 has a pka of 6.86. if the concentration of h2po4-1 is 0.622 mm and the concentration of h1po4-2 is 0.038 mm what is the ph of the solution?
H2po4-1 has a pka of 6.86. if the concentration of h2po4-1 is 0.622 mm and the concentration of h1po4-2 is 0.038 mm the ph value in the solution is 8.3
pH stand for potential hydrogen the pH of a solution also can be determined by finding the pOH. determine the concentration of the hydroxide ions by dividing the molecules of hydroxide by the volume of the solution and here to find pH value in the solution here the formula is
pH=pka log acid/base
ph=pka log h2po4-1/h1po4-2
ph=6.86×log0.622/ 0.038
ph=6.86×log16.36
ph=6.86×1.21
ph=8.3
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A ball-and-stick model of a molecule of formaldehyde, ch2o, is made from the following components: what do the sticks represent?
In chemistry, the ball-and-stick model is a molecular ideal of a chemical matter which is to expose both the three-dimensional position of the atoms and the bonds among them. The atoms are normally symbolise by spheres, join by rods which shows the bonds.
Formaldehyde forms formaldehyde structure bond it shares double bond with O2 atoms.
Formaldehyde also known as methanol .
Methanol is colourless.
It is flammable.
It is gas at room temperature.
Methanol having pungent odor and it is a volatile organic compounds.
It is made by the composition of Hydrogen, oxygen, and carbons.
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Even though h-bonding occurs in ammonia and ethanol, they cannot be used to replace water in living cells because ___________________.
Even though h-bonding occurs in ammonia and ethanol, they cannot be used to replace water in living cells because compared to amonia and ethanol, water is more polar.
Compared to amonia and ethanol, water is more polar and may form H bonds. Additionally, water is a better solvent or can dissolve a wide variety of solvents that are employed by living cells.
Hydrogen bonds can be formed by ammonia. When hydrogen bonds between water molecules are disrupted, comparable links between water and ammonia molecules can take their place. Ammonium and hydroxide ions are created when some of the ammonia combines with the water.
A hydrogen bond can develop between a water molecule and an ethanol molecule if there is just one pair of electrons in the water molecule, which will link with the oxygen atom and the polar hydrogen atom to create the bond.
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What organelle surrounds and supports plant cells to give them support and structure?
Group of answer choices
Cell Wall
Nucleus
Cell membrane
Answer:Cell membrane
Explanation:Plant cells don’t have cell wall
If the price of music lessons falls to
$
20
$20dollar sign, 20, which of the following best describes the income and substitution effects?
If the price of music lessons falls to $20, the statement which best describes the income and substitution effects is: C. The income effect is that she now can spend more on both goods. The substitution effect is that the price of music lessons relative to socks has decreased so she will definitely buy more music lessons.
What is price?Price can be define as an amount of money which is primarily set by the seller of a good (product), and it must be paid by a buyer to the seller, so as to enable the acquisition of this good (product).
What is an income effect?Income effect can be defined as a phenomenon which causes an individual (consumer) to adjust his or her consumption of a product due to an increase in its price and change in the level of income.
In conclusion, we can reasonably infer and logically deduce that for each music lesson Emily had purchased before, there is an extra $40 to spend on either music lessons or socks, and as such she might buy more of both due to the income effect.
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Complete Question:
Emily is a rational consumer who gets utility from socks and music lessons, and she considers both of these goods normal goods. Her marginal utility from socks is 50 utils and the price of socks is $5 per pair. Her marginal utility from music lessons is 600 utils and the price of music lessons is $60.
If the price of music lessons falls to $20, which of the following best describes the income and substitution effects?
A. The income effect is that she got a raise from her employer. The substitution effect is that music lessons are now relatively cheaper so she will buy more music lessons.
B. The income effect is that she effectively has more money to spend on either good. The substitution effect is that she will only buy socks now.
C. The income effect is that she now can spend more on both goods. The substitution effect is that the price of music lessons relative to socks has decreased so she will definitely buy more music lessons.
D. The income effect is that she will no longer buy socks because she has more income to spend on music lessons, so she will only buy music lessons.
E. The substitution effect is that she now can spend more on either good. The income effect is that the price of music lessons relative to socks has decreased so she will definitely buy more music lessons.
Cobalt-60 is produced by neutron activation. in this process, one neutron is absorbed by the nucleus of the parent isotope. what is the parent isotope? give both the mass number and atomic number.
The parent isotope is cobalt-59 (see the picture below).
The mass number is 59 and atomic number is 27 of the parent isotope.
Neutron activation is the process in which atomic nucleus capture free neutron or neutrons.
Cobalt-60 is produced in nuclear reactors in process of neutron activation from parent isotope cobalt-59 (see the picture below).
Atomic number (Z) is total number of protons and mass number (A) is total number of protons and neutrons in a nucleus.
Cobalt-59 and cobalt-60 are the isotopes of chemical element cobalt.
Isotopes are chemical elements with same atomic number (Z), but different mass number (different number of neutrons).
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Rubidium lies below potassium in Group 1. Predict the approximate value for the melting point of rubidium. Give a reason for your answer.
Rubidium's valence shell electron, "(ns(1))," is more loosely bound than in potassium due to the larger atomic size of rubidium. As a result, Rubidium is found in Group 1 below potassium.
A valence shell electron is what?When an atom's outer shell is open, a valence electron, which is an electron attached to it, can take part in the creation of a chemical bond.
To form a shared pair in a single covalent bond, each atom in the bond contributes one valence electron.
an atom's valence shell electron, which is its outermost shell and which can be shared or transferred to another atom.
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In the experiments conducted by avery, mccarty, and macleod, which hypothetical result would indicate that protein, not nucleic acid, was griffith's transforming substance?
The hypothetical result that would indicate Griffith's transforming substance is only the extracts from heat-killed cells treated with RNAS are unable to transform nonvirulent bacteria into virulent bacteria.
What is an experiment?An experiment is a scientific experiment that is conducted by scientists to prove a hypothesis.
In the experiments conducted by the scientists, the pure cells did not produce favorable findings, but they did exhibit transform ants that were quite similar to DNA.
Thus, the correct option is A, Only the extracts from heat-killed cells treated with RNAS are unable to transform nonvirulent bacteria into virulent bacteria.
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The question is incomplete. Your most probably complete question is given below:
Only the extracts from heat-killed cells treated with RNAS are unable to transform nonvirulent bacteria into virulent bacteria.
All the extracts from heat-killed cells are able to transform to nonvirulent bacteria.
Only the extracts from heat-killed cells treated with D.
The RNA of the bacteria used in this experiment was degraded.
an electrical conductor is in a strong magnetic field. how is the conductor affected if it is connected to a battery so that current flows through the conductor?
When placed in a magnetic field, a current-carrying conductor experiences a mechanical force that can cause the conductor to move.
How does the magnetic field impact current?
Current and magnetic force are directly inversely connected in a homogeneous magnetic field for a straight current-carrying wire. As a result, the force is inversely related to the size of the current. This translates to: If the current is doubled, the force on the conductor will also double.
How do the fields of electricity and magnetism interact?Electric fields are created by differential voltages; the stronger the voltage, the stronger the resulting field. Magnetic fields are produced by electric current, and the stronger the current, the stronger the magnetic field. There will always be an electric field present even when there is no current flowing.
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What are functionalized hydrocarbons? cite an example of a functionalized hydrocarbon
In functionalized hydrocarbons, a functional group is attached to the core of hydrocarbons (alkanes, alkenes, alkynes). Some examples are methanol (where the hydroxyl group is attached to methane) and it belongs to the chemical class of alcohols.
In organic chemistry, hydrocarbons are organic compounds made entirely of hydrogen and carbon. Hydrocarbons are examples of Group 14 hydrides. Hydrocarbons are generally colorless and hydrophobic, and their odor is usually faint or exemplified by the liquid odor of gasoline or lighters.
Examples of hydrocarbons include gasoline, kerosene, lamp oil, and furniture oil. If someone accidentally drinks a hydrocarbon product that gets into their lungs, it can cause breathing problems. Severe injury or even death can result. Crude oil is a mixture of relatively volatile liquid hydrocarbons (compounds composed primarily of hydrogen and carbon), but it also contains nitrogen, sulfur, and oxygen.
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ASAP!!! SCIENCE ITS DUE TOMZ
Answer:
1.
Groups - Verticle columns in the periodic table, signifies the number of valence electrons in the element.
vs.
Periods - Horizontal rows in the periodic table, signifies the number of shells in the element.
2. Because the group number corresponds to the number of valence electrons in an atom an element in group 5 (like Phosphorus) has 5 valence electrons.
Added information: a Valence electron is an electron in the outermost shell of an atom.
Which name is inconsistent with iupac nomenclature rules? 2-ethyl-4-methylhexane 2,3-dimethyl-4-propyldecane 4,5-dimethyloctane 3,3,5-triethyl-3-methylheptane 3,4-dimethyl-4-propyloctane
The correct answer is 4-ethyl-2-propylhexane.
Nomenclature is a device for giving names to matters within a specific career or field. For instance, you may additionally have heard of binomial nomenclature in biology class. It refers to the way of referring to living matters via two names, like calling people Homo sapiens.
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Sugar is a compound made of the elements hydrogen, carbon, and oxygen. Which element is left on the spoon after the sugar is heated?
Answer:
carbon is the element left on the spoon after the sugar is heated.
The carbon element is left on the spoon after the sugar is heated.
What are compounds?Compounds is defined as a material formed by chemical bonding between two or more chemical element.
Elements are defined as a species of atoms that has given number of protons in their nuclei, including pure substance consisting only of that species.
Elements are fundamental materials of which all the matter is composed.
Sugar is a compound made up of hydrogen, carbon and oxygen are the elements present in it.
Thus, the carbon element is left on the spoon after the sugar is heated.
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A chemist adds a chemical to pure water and there is a 100-fold increase in the concentration of hydrogen ions. What is the best approximation of the new ph value?.
If a chemist adds a chemical to pure water and there is a 100-fold increase in the concentration of hydrogen ions then the best approximate value of new pH is 5.
When only pure water is there.
H₂O ⇌ H⁺ + OH⁻
pKw = pH + pOH
14 = pH + pH ( This is because the value of pH and pOH is same in water and we need to consider pH here.)
14 = 2pH
pH= 14/2 = 7
So, pH of pure water is 7.
Concentration of hydrogen ions in pure water can be calculated using the equation
pH = -log[H⁺]
7 = -log[H⁺]
[H+] = 10⁻⁷ M
So, the concentration of hydrogen ions in pure water is 10⁻⁷ M.
Now, the chemist added a chemical to this pure water such that there is 100- fold increase in concentration of hydrogen ions.
So, the new concentration of hydrogen ions is calculated as shown below.
[H⁺] = 100 ×10⁻⁷ M
= 10⁻⁵ M
The new concentration of hydrogen ions is 10⁻⁵ M.
Now, the new pH can be calculated using the formula
pH = -log[H⁺]
= -log[10⁻⁵]
= -×-5log[10]
= 5×1
= 5
So, the new pH value = 5.
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You have just started brewing beer at home, and your first batch is now ready. You used the yeast saccharomyces cerevisia, which can perform both aerobic cellular respiration and fermentation. When you test the beer, you determine that the alcohol content is almost zero. What could have been present in the fermentation reaction apparatus that caused this problem?.
The oxygen present in the fermentation reaction apparatus has caused this problem.
The biological process that produces beer is fermentation. The yeast used to make beer, Saccharomyces cerevisiae, is capable of both fermentation and cellular respiration.
Saccharomyces cerevisiae would engage in aerobic cellular respiration in the presence of oxygen, converting glucose to carbon dioxide and producing energy. However, without oxygen, the yeast engages in fermentation and turns the glucose into ethanol (alcohol).
If the alcohol concentration is almost zero following the brewing method, oxygen may be present in the fermentation reaction apparatus. Thus, the Saccharomyces cerevisiae will perform aerobic cellular respiration rather than fermentation in the presence of oxygen.
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In this lab experiment, you will react copper(ii) chloride and aluminum. you will look for clues as to which substance was in excess and which limited the reaction
How can you identify the reactant that is restricting a chemical reaction while watching it take place? ”
What is the real purpose of scientific study?Building scientific knowledge, or discovering rules and positing ideas that may explain natural or social occurrences, is the aim of scientific study. It is crucial to recognize that this knowledge might be inaccurate or perhaps quite distant from the truth.
An experiment is what?A hypothesis, or an anticipation about how a certain process or phenomena operates, is typically the subject of an experiment. However, an experiment may also seek to address a hypothetical issue or support earlier findings without having any preconceived notions about what would be revealed.
Complete question -
In this lab experiment, you will react copper(ll) chloride and aluminum. You will look for clues as to which substance was in excess and which
limited the reaction. Write an investigative question that describes the
scientific goals of this experiment. Make sure that your question applies to any reaction. Investigative Question:
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Water has more structure than other liquids because of its ability to form hydrogen bonds. Because of this phenomena, water expresses a relatively high __________, which allows it to cushion and protect the body’s structures.
Water has more structure than other liquids due to its ability to form hydrogen bonds. due to this phenomena, water expresses a comparatively high density , which allows it to cushion and protect the body’s structures.
What causes density?
The density of a substance is that the relationship between the mass of the substance and how much space it takes up (volume). The mass of atoms, their size, and the way they are arranged determine the density of a substance. Density equals the mass of the substance divided by its volume; D = m/v.
Why is density important?
Density is a crucial concept because it allows us to determine what substances will float and what substances will sink when placed in a liquid. Generally, substances float goodbye as their density is less than the density of the liquid they are placed in.
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If 247.65 grams of barium hydroxide react completely, how many grams of water should theoretically be produced?
If 247.65 g of barium hydroxide react completely, the grams of water produced theoretically should be 52.03 g.
The balanced chemical equation for reaction is :
2HNO₃ + Ba(OH)₂ → 2H₂O + Ba(NO₃)₂
To calculate number of moles, we will use the equation:
Number of moles = Given Mass g
Molar Mass g/mol
Moles of Ba(OH)₂ -
Number of moles = 247.65 g = 1.4454 moles
171.34 g/mol
Stoichiometry is defined as the number before chemical formula in a balanced reaction.
According to stoichiometry, the limiting reagent is barium hydroxide as it limits the formation of product. Yields can only be found using limiting reagent.
1 mole of Ba(OH)₂ produces = 2 moles of H₂O
Therefore, 1.4454 moles of Ba(OH)₂ requires = 2.891 moles
Mass of H₂O is = moles × molar mass
= 2.891 × 18 = 52.03 g
Thus, the theoretical yield produced is 52.03 g
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A. Graph the following information in a BAR graph. Label and number the x and y-axis appropriately.
y
Month
Sept
Oct
Nov
Dec
Jan
Feb
# of deer
38
32
26
20
15
12
X
The quantity of deer is a dependent variable, whereas time is an independent variable.
Independent variable is the variable whose value doesn't depend on other variable.The independent variable is time(months)The dependent variable is number of deer.The appropriate title is variations in deer population in given time period.A variable is said to be independent if it does not depend on any other variable to determine its value. A variable is said to be independent if it does not depend on any other variable to determine its value. A variable that indicates a quantity being altered in an experiment is known as an independent variable. A quantity whose value depends on such modifications is referred to as a dependent variable. The independent variables in the context of a function are the function's inputs, while the dependent variables are the function's outputs.To learn more about dependent and independent variables visit:
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A 0.50-quart jar contains 2.0 pounds of honey. what is the density of the honey in g/ml?
A 0.50-quart jar contains 2.0 pounds of honey. 1.9 g/ml is the density of the honey.
Population density (in agriculture, forest stand, or plant density) is a measure of population per unit area or, exceptionally, per unit volume. It is a quantity of type number density. It applies to living things in general, mainly humans. It's an important geographical term. Simply put, population density is the number of people living per square kilometer.
Urban populations, especially urban areas, strongly depend on the definition of "urban area" used. It is almost always denser only in the center than when it includes suburban settlements and intervening rural areas, such as agglomerations and metropolitan areas. Area (the latter may include neighboring cities).
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What is the nitrogen source of for the carbamoyl phosphate in pyrimidine synthesis? tetrahydrofolate glutamine orotate urea ammonium iron
Glutamine is the nitrogen source of the carbamoyl phosphate in pyrimidine synthesis.
Carbamoyl Phosphate generates when enzyme bound carbamate reacts with second ATP, with release of free enzyme, and ADP.
The atoms of pyrimidine ring comes from the aspartic acid and carbamoyl phosphate (CP). The first step of the pathway is the formation of former or latter molecule. The enzyme named carbamoyl phosphate synthetase II catalyses the latter molecule. Glutamine is used by this enzyme as the nitrogen source.
N-acetylglutamate activates this mitochondrial enzyme carbomoyl phosphate synthetase but it is not an allosteric activator. It is located in the cytoplasm.
CPS II catalyzes the synthesis of carbamoyl phosphate which is ATP dependent synthesis from glutamine or ammonia.
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if correct I will mark brainliest
When a solid, such as a truck, moves from one place to another, the volume of the truck stays the same. What would be true about the shape of the truck? (2 points)
Group of answer choices
The truck changes its shape.
The truck decreases its shape.
The truck increases its shape.
The truck keeps its shape.
Answer:
Explanation:
The option that would be true about the shape of the truck is that the truck keeps its shape. Thus, the correct option is D.
What is the volume of solid?
The volume of a solid may be defined as the process of measuring the overall space that an object takes up in its physical structure.
The volume of any solid alters with respect to its shape. If its shape increases, the volume definitely increases, while if its shape decreases, the volume ultimately reduces.
Therefore, the option that would be true about the shape of the truck is that the truck keeps its shape. Thus, the correct option is D.
To make a water-insoluble substance water-soluble, a chemist could add groups with bonds between.
To make a water insoluble substance water soluble, a chemist can add groups with bonds between atoms with different attraction for electrons.
A water soluble drug or substance is easier to be taken up in your digestive system.
Positive and negative are attracted which makes a cohesive structure. When polar compounds or ions gets added to the water, these compounds breaks down or degrades into smaller components. They also might dissolve to become the part of the solution.
The partial charges of water attracts the various parts of a compound. When attraction occurs, it gets more soluble in the water.
Thus, by adding groups with bonds between atoms with different attraction for electrons, substance can become water soluble.
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Describe how you could use anhydrous cobalt chloride to test that a colourless
liquid was water. State what you would do and what observations you would
look for.
The anhydrous cobalt chloride is blue in color and it absorbs water, on reaction with water it turns pink in color.
What is chemical reaction?A chemical reaction is defined as a process that lead to chemical transformation of one set of substances to another set.
There are basically four types of chemical reactions.
Synthesis reactionDecomposition reaction Single replacement reaction Double replacement reactionThe reaction between anhydrous cobalt chloride and water is also one of the chemical reaction.
Thus, anhydrous cobalt chloride is blue in color and it absorbs water, on reaction with water it turns pink in color.
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Resonance structures for a molecule are an indication of overall lower energy for the molecule. True or false?.
Answer:
I think it's false
Explanation:
What is the actual order that information follows as it travels through a neuron?
Dendrites -> Soma -> Axon -> Terminal buttons
is the actual order that information follows as it travels through a neuron
What is neuron?Neurons are messengers of information. Between various brain regions and between the brain and the rest of the nervous system, information is transmitted using electrical impulses and chemical signals. Without the action of neurons and their supporting cells, the glial cells known as oligodendrocytes and astrocytes, humans would not be able to think, feel, or act.
A cell body, an axon, and two extensions called a dendrite make up the three basic components of a neuron. There is a nucleus inside the cell body that regulates the cell's functions and houses its genetic material. The axon, which resembles a long tail, delivers signals from the cell. Dendrites serve as the cell's messengers and resemble the tree's branches.
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Hydrogen+peroxide+used+as+a+6%+solution+is+used+to+clean+wounds+on+skin+as+a(n)+__________,+and+it+is+also+used+as+a+stronger+solution+(>30%)+as+a(n)+__________.
Hydrogen peroxide used as a 6% solution is used to easy wounds on pores and skin as an antiseptic ,and it is also used as a stronger answer (>30%) as an antimicrobial agent and an oxidizing agent.
Hydrogen peroxide (H2O2) is a topical antiseptic utilized in wound cleaning which kills pathogens through oxidation burst and nearby oxygen manufacturing. H2O2 has been said to be a reactive biochemical molecule synthesized by means of various cells that impacts biological behavior thru multiple mechanisms: alterations of membrane potential, technology of latest molecules, and changing intracellular redox balance, which leads to activation or inactivation of different signaling transduction pathways.
As an disinfectant, it additionally treats wounds. Hydrogen peroxide capabilities as an oxidizing element in personal care merchandise, which includes colorants and toothpastes, and gives a lightening/whitening impact.
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Which observation most likely indicates that only a chemical change has taken place?(1 point)The change cannot be reversed.
The shape changes
States of matter changes.
A reaction occurs.
Answer:
Correct answer is “a reaction occurs” because in the readings it says specifically chemical changes can be reversed but it’s not easy.
Explanation: