You place 10.00 mL of water in a graduated cylinder and add a 15.0 g sample of iron to the water. The new water level is 11.91 mL. What is the density of the iron?​

Answer:

sight, taste, touch, hearing and smell

Explanation:

Anything detected with the five senses is considered a sensory perception or sensory experience

Our five senses are sight (vision), hearing (audition), taste (gustation), touch (tactile perception), and smell (olfaction). These senses allow us to perceive and interpret information from the external environment.

When stated as "detected with the five senses," which means gather information about the world around us through these sensory experiences.

For example:

1. Sight (Vision): We perceive visual information through our eyes, allowing us to see colors, shapes, and movements.

2. Hearing (Audition): We perceive auditory information through our ears, allowing us to hear sounds and distinguish between different tones and pitches.

3. Taste (Gustation): We perceive taste sensations through our taste buds on the tongue, allowing us to distinguish between sweet, sour, salty, bitter, and umami flavors.

4. Touch (Tactile Perception): We perceive tactile sensations through our skin, allowing us to feel textures, pressure, temperature, and pain.

5. Smell (Olfaction): We perceive smells through our olfactory system, located in our nose, allowing us to detect and identify various scents and odors.

All the sensory experiences , whether through sight, hearing, taste, touch, or smell, contribute to our understanding of the world and our surroundings.

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4 liters of the 10% solution are needed.

ω₁ = 4% ÷ 100% = 0.04; mass percentage of 8 liters solution

V₁ = 8 L; volume of 4% solution

ω₂ = 10% ÷ 100% = 0.1; mass percentage of solution

ω₃ = 6% ÷ 100% = 0.06; mass percentage of the final 6% solution

V₂ = ?; volume of 10% solution

V₃ = V₁ + V₂; volume of the final 6% solution

ω₁ · V₁ + ω₂ ·V₂ = ω₃ · V₃; formula to calculate volume of the solution

0.04 · 8 L + 0.1 · V₂ = 0.06 · (8 L + V₂)

0.32 L +  0.1 · V₂ = 0.48 L + 0.06 · V₂

0.04 · V₂ = 0.16 L

V₂ = 0.16 L ÷ 0.04

V₂ = 4 L; volume of the 10% solution

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It is impossible for an element to have an atomic number of 110.5 because atoms of an element all have the same whole number of protons. Thus, option C is correct.

The atomic number is the number of protons in the nucleus of an atom. The number of protons defines the identity of an element. The atomic number of an atom is equal to the number of protons in the nucleus of an atom or the number of electrons in an electrically neutral atom.

For example, in a sodium atom, there are 11 electrons and 11 protons.

Thus, the atomic number of Na atom = number of electrons = number of protons is equal to 11.

The atomic number is based only on the number of protons in the nucleus of an atom. Since this is a count of whole numbers, it cannot be a decimal. It's either element 110 or 111, not 110.5.

There is no half proton in the atom, hence we can not have an atomic number of 110.5.

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When phosphate is added to ADP to form the energy-storing molecule ATP, this is often often known as phosphorylation and, since water is additionally produced, this reaction is additionally considered a condensation reaction.

What are phosphorylation and condensation?

Phosphorylation could also be a condensation reaction that is important for the functioning of sugars, lipids, and proteins and is critical when it involves regulating the function of enzymes. one among the simplest phosphorylation reactions in nature is the phosphorylation of glucose which is the first step in glycolysis.

What happens when a phosphate molecule is added to ADP?

When the cell has extra energy (gained from breaking down food that has been consumed or, within the case of plants, made via photosynthesis), it stores that energy by reattaching a free phosphate molecule to ADP, turning it back to ATP. The ATP molecule is simply like a rechargeable battery.

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The percentage abundance of isotopes of gallium is 61.56% is Ga-70.92 & 38.44% is Ga-68.93.

Gallium (31Ga) is composed of two stable isotopes: gallium-69 and gallium-71. Gallium-67 and gallium-68 are the most commercially important radioisotopes.

Gallium-67 (half-life: 3.3 days) is a gamma-emitting isotope (the gamma ray emitted immediately after electron capture) that is used in standard nuclear medical imaging procedures known as gallium scans. It is most commonly used as the free ion, Ga3+. It is the gallium radioisotope with the longest half-life.

Gallium has two naturally occurring isotopes: Ga-69 (mass 68.9256 amu, natural abundance 60.11%), and Ga-71 (mass 70.9247 amu, natural abundance 39.89%).

Gallium's average atomic mass =[tex]\frac{68.9257 +70.9249}{2}[/tex]

=69.9253

Let x equal the percentage abundance of the first isotope.

by utilizing

AAM=[tex]\frac{W_{1}X_{1} * W_{2} X_{2} }{100}[/tex]

[tex]69.70 = \frac{70.925 *X +68.926 * (1-X)}{100}[/tex]

[tex]69.70 = 70.925X + 68.926 - 68.926 X[/tex]

x = 61.56%

61.56% is Ga-70.92. (100-61.56)

& 38.44% is Ga-68.93.

The percentage abundance of isotopes of gallium is 61.56% is Ga-70.92 & 38.44% is Ga-68.93.

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Answer:

There are following three ways in which a object can accelerate....

1...speeding up

2.... slowing down

3... changing direction

hope it help you✌✌✌✌✌

Explanation:

The term that represents the reaction mixture after the complete combustion of acetaldehyde, ch3cho is H-O-H, O-C-O. The correct option is b.

Complete combustion is the process of consuming all oxygen in the reaction. In the process of combustion, oxygen is needed for the process. In incomplete combustion, oxygen is not present in the reaction.

In incomplete combustion, less energy is produced because of less oxygen in the reaction.

The inorganic substance that is showing the complete combustion process is H-O-H, O-C-O.

Thus, the correct option is b. H-O-H, O-C-O.

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The question is incomplete. Your most probably complete question is given below:

a. C-O; O-H, O-C

b. H-O-H, O-C-O

c. H-C-C-C-H

d. C-O, O-C, H-H

e. O-C-H, H-H-H

A singlet, a triplet, and a quartet multiplicities are observed for the signals in the off-resonance decoupled 13c NMR spectrum of (2e)-3-chloroacrylaldehyde

A spectrum is defined as the characteristic wavelengths of electromagnetic radiation (or parts thereof) emitted or absorbed by an object or substance, atoms or molecules. Multiple: Spectrum. A spectral line is an otherwise smooth and continuous spectral dark or bright line resulting from the emission or absorption of light in a narrow frequency range compared to adjacent frequencies.

These applications include Voice of America broadcasting, weather services, radar and voice communication systems for controlling commercial and civil air and sea traffic, weather satellite systems, flood warning and water control systems, and time signals.

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The potency of acetylcholine after replacing the acetyl group with propionyl or butyrly group decreases.

Its is a organic chemical that function in the brain and body fofmany types of animal ,and humans also as neurotransmitter.

It act as a messenger , that plays a very important role in the central and peripheral nervous system.

The acetylcholine is important for autonomic body functions, muscle control and memory , learning and attention.

Lack of acetycholine cause no contraction in muscles.

Excess of acetylcholine causes cramps , muscular weakness blurry vision, diarrhea etc.

Propionyl or butyryl  is higher homologus group than acetyl , this is the reason the potency will decreases or reduces its activity.

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The ratio of the mass in grams of fluorine to the mass in grams of iodine in the three compounds is 13.49

Fluorine mass in grams is 134.9 g and  iodine mass in grams is 10.0 g so here the ratio of this two in the three compound is 134.9/10.0=13.49

The mass of ratio of florine and iodine is 13.49

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Aspartate has three ionizable groups with pka values of 1.88, 9.60, and 3.65. The average net charge of aspartate at ph 3.65 is  - 0.5.

Aspartate, like glutamic acid and glutamate, is the anion of aspartic acid. Aspartic acid is a -amino acid with a net negative charge. It is the most well-known form of amino acid that occurs in physiological conditions of the body.

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The absolute pressure in a compressed air tank is 180 kpa. pressure in psia  is 26.10 psia

The pressure of having no matter inside a space, or a perfect vacuum called absolute pressure. it indicates how much higher your process pressure is than that of a process in vacuum, so measurements are always positive. for calculate pressure

P=(180kPa)(1 psia/6.895 kPa) = 26.10 psia

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Answer:

Explanation:

All of the following are duties of United States citizens EXCEPT:

A.

understanding their rights

B.

taking education seriously

C.

understanding what it means to be an active citizen

D.

learning about and understanding foreign governments and laws

Please select the best answer from the choices provided

A

B

C

D

Answer:

The kilogram, meter, and second are the fundamental base units upon which the metric system is built, but seven units of measure are defined from which all the other units are derived: Kilogram: The kilogram (kg) is the base unit of mass. Meter or Metre: The meter (m) is the unit of length or distance.

Explanation:

The two main sets of English units were the Winchester Units, used from 1495 to 1587, as affirmed by King Henry VII, and the Exchequer Standards, in use from 1588 to 1825, as defined by Queen Elizabeth I.

Although the valence electron structures of the atoms of each element in a vertical column are often the same, the number of energy levels in the atoms increases as the elements descend the column.

Because of their comparable chemical behavior, the vertical columns of the periodic table are referred to as groups or families. A family of elements' members share the same valence electron count and chemically similar characteristics.

Periods and groups are the names of the horizontal rows and vertical columns, respectively. Chemical characteristics of elements within the same group are comparable. Due to the fact that they have an equal number of outside

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Adding different amounts of contaminated water to each tube rather than diluting between tubes. Frequently, county health agencies will assist you with nitrate or bacteria testing. If not, you can ask a state-approved laboratory to test your water. Call the Safe Drinking Water Hotline at 800-426-4791 to locate one in your region.

Tests of the water's quality will reveal information on the condition of the river. The quality of the water might fluctuate over time, and this can be noticed by testing tubes it repeatedly. Temperature, pH, turbidity, salinity, nitrates, and phosphates are just a few of the variables that can be measured.

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B) 2.72 * 10^13 oxygen atoms are there in phosphoric acid.

The most significant phosphorus oxygen acid, also known as orthophosphoric acid (H3PO4), is used to create phosphate salts for fertilizers. Additionally, it is utilized in the production of albumin derivatives, dental cement, sugar, and textile manufacturing. It is used in food goods as an acidic, fruity flavoring.

A less concentrated version of phosphoric acid is a colorless syrupy liquid, while pure phosphoric acid is a crystalline solid with a melting point of 42.35° C (or 108.2° F). While white phosphorus is used to create acid with a higher purity, phosphate rock is used to create crude acid. Three classes of salts are produced by phosphoric acid depending on whether one, two, or three hydrogen atoms are substituted.

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The density of the second liquid is 0.4496.

"Density is the mass per unit volume." Density is known as a scalar quantity. It is denoted by a small d and the symbol for density is given as rho, a Greek symbol. Density is calculated as mass divided by volume.

The first density is

A flask weighs 43.50 g = M1

The mass is 96.75 g = M2

D1 = 1 g/ml

Density 2 = ?

The formula

M1 x D1 = M2 x D2

43.50 g x 1 g/ml = 96.75 g x D2

D2 = 43.50 g x 1 g/ml / 96.75 g = 0.4496.

D2 = 0.4496

Thus, the density of the second liquid is 0.4496.

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Answer:

Bohr's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells, or orbits, around the nucleus.

Explanation:

hope this helps and have a great day

Taking into account definition of percent yield, 15 grams of HF are produced if 3.00 g of hydrogen react with excess fluorine with a 25 percent yield.

In first place, the balanced reaction is:

H₂ + F₂ → 2 HF

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

The following rule of three can be applied: if by reaction stoichiometry 2 grams of H₂ form 40 grams of HF, 3 grams of H₂ form how much mass of HF?

mass of HF= (3 grams of H₂× 40 grams of HF)÷ 2 grams of H₂

mass of HF= 60 grams

Then, 3.00 g of hydrogen react with excess fluorine and it forms 60 grams of HF.

The percent yield is the ratio of the actual return to the theoretical return expressed as a percentage.

The percent yield is calculated as the experimental yield divided by the theoretical yield multiplied by 100%:

percent yield=(actual yield÷ theorical yield)×100%

where the theoretical yield is the maximum amount of product that could be formed from the given amounts of reagents.

In this case, you know:

Replacing in the definition of percent yields:

25%=(actual yield÷ 60 grams)×100%

Solving:

25%÷100%= actual yield÷ 60 grams

0.25= actual yield÷ 60 grams

0.25× 60 grams= actual yield

15 grams= actual yield

Finally, 15 grams of HF are produced if 3.00 g of hydrogen react with excess fluorine with a 25 percent yield.

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the reaction stoichiometry:

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Under certain conditions, excessive Sweating results in water depletion, which is called Dehydration. A sign of water depletion is Weight Loss.

Dehydration means less intake of fluid such as water, juices etc or by losing more fluid than the amount of fluid you have taken. Fluid can be lost in the form of sweat, tears, urine, vomiting, or diarrhoea.

A dehydration reaction can be defined as the chemical reaction between any two compounds where one of the products is water. Dry mouth and tongue, no tears when crying, Sunken eyes and cheeks are some of the signs of dehydration.

Under certain conditions, excessive Sweating results in water depletion, which is called Dehydration. A sign of water depletion is Weight Loss.

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The density of lead is 11.4 g/cm³. The mass of a lead ball with a radius of 0.50mm is  5.9714226 x 10⁻² g.

The density of a substance is defined as the mass of substance per unit of its volume. Density is represented by the symbol, ρ.

The formula for density is -

 Density (ρ) = mass (m)                    

                       volume (v)

Given :

Density of lead = 11.4 g/cm³

Radius of lead ball = 0.50 mm = 0.05 cm

Since,

         Vsphere = 4/3 π r³

                     v = 4 × 3.14 × (0.05)³

                           3

                     v = 4.18 x (1.25 x 10⁻³)

                     v = 5.225 x 10⁻³  

Since,

           Density =  mass  

                            volume

       11.4 g/cm³ =    mass  

                            5.225 x 10⁻³

              mass = 11.4 x (5.225 x 10⁻³)

              mass = 5.9565 x 10⁻² or 0.05955 g

So,  the mass of a lead ball with a radius of 0.50mm is  5.9565 x 10⁻² g

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The objective lens that would you use to reach 100x magnification is known as the Oil immersion objective lens.

Magnification may be defined as the process of making enlarged views of smaller objects like cell specimens with the help of tools and devices.

The Oil immersion objective lens is known to have the most powerful magnification with a whooping magnification range of approximately 1000x when significantly combined with a 10x eyepiece.

Therefore, the Oil immersion objective lens is the objective lens that would you use to reach 100x magnification.

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Answer:

protons and neutrons

Explanation:

because Neil bohr had described this is his theory

Answer:

hope this help

Explanation:

In Bohr's model, electrons moved around the atomic nucleus in circular orbits, but those orbits had set discrete energies, and electrons could gain or lose energy only by moving from one orbit to another, absorbing or emitting radiation as necessary.

An unknown substance has a density of 2.5g/ml. Density is a physical property because we can find it for a substance without changing the identity of the substance. The correct option is B.

Physical properties are those properties that can be seen by seeing the matter of the object. Density is a physical property. It does not depend upon the chemical composition of the object.

Thus, the correct option is B. Density is a physical property because we can find it for a substance without changing the identity of the substance.

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The correct way to complete this statement: when atoms combine to form compounds, they can share electrons.

An atom is a particle of matter that uniquely defines a chemical element. Atoms consist of a central nucleus surrounded by one or more negatively charged electrons. The nucleus is positively charged and contains one or more relatively heavy particles known as protons and neutrons.

Atoms formed shortly after the "Big Bang" billions of years ago. Atoms are made up of electrons that revolve around a nucleus containing protons and neutrons. The big bang created elementary particles such as electrons, protons, and neutrons. Things slowed down as the universe continued to expand and cool. It took 380,000 years for electrons to confine themselves in orbits around the nucleus to form the first atom. These are mainly helium and hydrogen, which are still the most common elements in the universe.

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Chemical bonds that join the amino acids together to form polypeptide chains are peptide bonds. Chemical bonds are formed when two or more atoms, molecules, or ions come together to form a compound. Atoms in the resultant molecule are held together by these chemical bonds.

Bonds can be classified as ionic, covalent, or metallic in general. When a valence electron transfers from one atom to another to finish the outer electron shell chains, an ionic bond is created. Ionic bonds, covalent bonds, hydrogen bonds, and van der Waals interactions are the four categories of chemical bonds that are necessary for life.

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The required force is 280 N.

We must subtract our individual forces in order to calculate the net force.

In general, whenever forces act on an object in opposite directions-the net force is equal to the difference between the two forces.

To calculate the net force, one force is subtracted from the other. therefore, here

325 N is force 1 to the right.

45 N is force 2 to the left.

Force 1 - Force 2 is the net force.

net force= 325N - 45N

net force= 280 N

So the required force is 280 N.

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The net force of the runner would be 280 N.

Hope this helps! Also, if you need help with the other questions regarding this assignment, feel free to check out the study set I made on Quizlet. Thanks and good luck!

Quizlet - "Unit 6: Lesson 2 Newton's First Law QC"

h t t p s : / / q u i z l e t. c o m / 7 3 7 7 5 9 5 5 5 / u n i t - 6 - l e s s o n - 2 - n e w t o n s - f i r s t - l a w - f l a s h - c a r d s / ? n e w

If you have purchased used machinery and it does not come with maintenance instructions, you should contact the manufacturer or check their website.

New machinery always come with maintenance instructions.

With an used machinery that is not always a case.

Machinery manufacturer is the best place to get help for some issues.

The manufacturer can provide necessary informations about maintenance instructions and other important informations about their products.

Another place to find necessary informations is website of the manufacturer of the used machinery. Website usually have many others usefull informations about the product. Many manufacturer optimize their information pages.

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Plants promote mechanical and chemical weathering but inhibit erosion because of root

Plants can cause mechanical weathering their roots grow into rocks and crack them and when plants cause chemical weathering there roots release acid or other chemicals, onto rocks, which then forms cracks, and breaks apart. as plant roots take in nutrients, they remove elements from the minerals. This causes a chemical change in the rock but inhibit erosion because plants break up earthen materials as they take root, and can create cracks and crevices in rocks that's why they inhibit erosion

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