Instead rudy consumes 500 ml of orange juice (ph 3.3), who has consumed more hydrogen ions?
Rudy consumes 2.5 ×[tex]10^{-4}[/tex] moles hydrogen ions.
What are ions?
A negatively charged ion called an anion has more electrons than protons compared to a positively charged ion called a cation. The electrostatic force causes opposite electric charges to be drawn towards one another, causing cations and anions to attract one another and easily form ionic compounds.
Atomic or monatomic ions are those made up of just one atom, whereas molecular or polyatomic ions are those made up of two or more atoms. Physical ionization occurs when molecules spontaneously collide in a fluid (gas or liquid), producing "ion pairs" that each contains a free electron and a positive ion. Chemical reactions, such as the dissolution of a salt in liquids, can also produce ions.
Rady consumes 500 ml of organic juice of [tex]p^{H}[/tex]
3.3
[tex]p^{H}[/tex] = 33
- log [[tex]H^{+}[/tex]] = 3.3
[[tex]H^{+}[/tex]] = [tex]10^{-3.3}[/tex]
[[tex]H^{+}[/tex]] = 5.01 x [tex]10^{-4}[/tex] M
Volume of organic juice = 500ml = 0.5L
Mole of [tex]H^{+}[/tex] ions = 2.5 ×[tex]10^{-4}[/tex] moles
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A mixture of water (H2O) and ammonia (NH3):
Answer:
h20 + NH3
Explanation:
water plus ammonia gives or produces a weak qcid
Answer:
The answer is hydrogen bonding
Explanation:
What was collected in the sample for chemical analysis? what was concluded from the results of this experiment?
Miller performed the chemical analysis experiment and collected samples of several organic compounds ( like formaldehyde and hydrogen cyanide) and other complex molecules like amino acid that were called as hydrocarbons.
Miller concluded from the experiment that the early stage in the origin of life could have been supported by the abiotic synthesis of organic compounds.
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explanation on redox reaction
The redox reaction must occur between an oxidizing agent and a reducing agent.
What is redox reaction?From your question, you want me to give you a general idea about redox reaction and that is what I will do. Firstly, a redox reaction is one in which one specie is oxidized and the other is reduced. The both processes have to occur simultaneously.
When we say that the both processes occur simultaneously, we mean that the electron that is lost in one process is gained in another process and all these must happen within the same system not apart from each other.
The oxidation number of one specie increases while the oxidation number of the other specie decreases. Hence, an redox reaction must occur between an oxidizing agent and a reducing agent.
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Resonance structures for a molecule are an indication of overall lower energy for the molecule. True or false?.
This statement is true.
When all of the features of a compound cannot be explained by a single structure, numerous structures of that compound are employed to explain all of the attributes of the given molecule.
This phenomenon is referred to as resonance, and all structures are referred to as resonant structures.
As a result, resonance structures are collections of Lewis structures that explain the delocalization of electrons in a polyatomic ion or molecule, and the larger the extent of electron delocalization, the lower the overall energy in the system. Thus, resonance is known to increase compound stability by lowering energy.
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1 Samples of four gases are released in a room at the same time.
The gases are carbon dioxide, CO₂, hydrogen chloride, HCl, hydrogen sulfide, H₂S, and nitroge
dioxide, NO₂.
Which gas diffuses fastest?
Answer:
H2S
Explanation:
The gas with the smallest molar mass diffuses the fastest (assuming that the holes are the same size and that gasses act ideally).
Find the molar mass of each of the gasses, and then compare.
CO2 = 12 + 16 + 16 = 32 + 12 = 44
HCl = 35.45 + 1 = 36.45
H2S = 1 + 1 + 32 = 34
NO2 = 14 + 16 + 16 = 32 + 14 = 46
Therefor, H2S diffuses the fastest, then HCl, then CO2, and finally NO2
At what approximate temperature will the reaction mixture containing methyl salicylate and 30 ml of 4m sodium hydroxide boil?
At 223.3°C the solution will boil.
What is methyl salicylate?The organic substance methyl salicylate has the chemical formula C₈H₈O₃. It is salicylic acid's methyl ester. It is a clear, viscous liquid that is commonly referred to as "minty" since it is a component of mint candies. It has a sweet, fruity aroma reminiscent of root beer.
What is sodium hydroxide?Lye and caustic soda are other names for sodium hydroxide, an inorganic substance having the formula NaOH. It is a white, solid ionic substance made up of the cations sodium (Na+) and the anions hydroxide (OH).
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The energy recommendation that describes the proportions of calories that should come from carbohydrate, fat, and protein are the: ______.
a. ears
b. ais
c. amdrs
d. dris
Explanation:
what are you feeling now I am looking forward
What type of polymer would you obtain if sorbitol was used as a plasticizer additive?
The type polymer would you obtain if sorbitol was used as a plasticizer additive is the Bio - polymer.
Plasticizers are the substances added to polymer soultion to enhances its flexibility and plasticity. This is the reason plasticizers make polymer solution suitable for the application of film coating.
Bio - polymers are produced from natural sources. Bio based polymer may produced from sugar- based or starch based.
Sorbitol is a naturally occuring sugar alcohol. it is the effective plasticizer for improving melt processing ability.sorbitol is a type of carbohydrate known as sugar alcohol or polyol. It is found in sugar free gum used as a plasticizers and reduce the hydrogen bonding of polymer and incorporate spaces into the polymer.
so, when sorbitol used as plasticizer additive the type of polymer formed is bio - polymer.
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The mass of an atom doesn't include the mass of the electrons because?
a) of their negative charges
b) electrons are so small they don't really add any weight
c) they are outside the nucleus
I'm sure but a or c I'm sure
A chemist measures the amount of mercury in sediment samples from three areas of a river (the source, the midway point, and the
mouth).
Which is the most reasonable hypothesis for the chemist's experiment?
If a chemical plant near the source of the river is dumping mercury, then the mercury levels should be highest at the mouth
and lowest at the source.
If a chemical plant near the source of the river is dumping mercury, then the mercury levels should be highest at the mouth
and lowest at the midway point.
If a chemical plant near the source of the river is dumping mercury, then the mercury levels should be the same all along
the river.
If a chemical plant near the source of the river is dumping mercury, then the mercury levels should be highest at the
source and lowest at the mouth.
If a chemical plant near the source of the river is dumping mercury, then the mercury levels should be highest at the source and lowest at the mouth.
Further testing should show that this is a commonly followed rule. Observations should be explained in a published scientific paper. Scientists look for answers to questions and solutions to problems using a process called the scientific method. This process consists of observation, hypothesis development, and experimental design. Bringing additional observations hypotheses, and experiments in repeated cycles
Chemists use the scientific method to conduct experiments formulate hypotheses formulate laws, and develop theories to better understand how the natural world behaves. In scientific thinking, hypotheses are formed before applicable research is conducted. The theory, on the other hand, is supported by evidence. This is a principle formulated as an attempt to explain what the data already support.
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What type of ring strain is predominantly responsible for causing cyclooctane to be higher in energy than linear octane?
a. torsional strain
b. transannular strain
c. angle strain
d. isomer strain
Transannular strain predominantly responsible for causing cyclooctane to be higher in energy than linear octane.
Linear octane is a chain like structure in which 8 carbon atom are present and cyclooctane is a cycle like structure in which 8 carbon atom are present. cycloalkanes tend to give off a very high and non-favorable energy, and the spatial orientation of the atoms is called the ring strain in that linear octane there is no ring strain because this is like a chain and in cyclooctane transannular strain is seen because it is cycle like structure the unfavorable interactions of ring substituents on non-adjacent carbons called transannular strain in cyclooctane transannular strain is more that's why energy is higher than linear octane.
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Elements a and q form two compounds, aq and a2q3. the mass ratio (mass q)/(mass a) for aq is 0.574. what is the mass ratio (mass q)/(mass a) for a2q3?
The mass ratio (Mass of Q/ Mass of A) of the compound A₂Q₃ is 0.861.
mass ratio is a degree of the performance of a rocket. It describes how a lot greater big the car is with propellant than with out; this is, the ratio of the rocket's moist mass (vehicle plus contents plus propellant) to its dry mass (car plus contents). A extra green rocket layout calls for less propellant to gain a given intention, and would consequently have a lower mass ratio; but, for any given efficiency a better mass ratio usually permits the vehicle to obtain higher delta-v.Given,
The mass ratio (mass Q)/(mass A) for AQ is 0.574
We have to find the mass ratio (mass Q)/(mass A) of A₂Q₃.
The mass ratio for A₂Q₃ is
Mass of Q/ Mass of A = 3 × mass Q/ 2 × mass A
Or, Mass of Q/ Mass of A = (3/2) × (mass Q/ mass A)
Or, Mass of Q/ Mass of A = (3/2) × 0.574
Or, Mass of Q/ Mass of A = 0.861.
Therefore, the mass ratio for (Mass of Q/ Mass of A) for A₂Q₃ is 0.861.
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Which one of the following pairs of elements would be most likely to share similar properties?
a) n and f
b) b and si
c) cl and br
d) br and kr
e) li and be
Elements that would share similar properties are c) Cl and Br.
Elements chlorine (Cl) and bromine (Br) are both halogen elements.
In VIIA or group 17 (halogen elements) there are six elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At) and tennessine (Ts).
They have high electronegativity because they have seven valence electrons in their outermost energy level, so they can gain an electron to have the octet rule.
Electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.
Chemical properties of these elements are similar, because they have the same number of valence electrons.
a) Nitrogen(N) and fluorine (F) are not in the same group of Periodic table of elements, so they have different properties.
b) Boron (N) and Si (silicon) are not in the same group of Periodic table.
d) Bromine and Kr (krypton) are different, because krypton is a noble gas.
e) Lithium (Li) and beryllium (Be) are not in the same group of Periodic table.
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When the concentration of a substance differs from one area to another, this creates a concentration.
The difference in the concentration of a substance between two areas is called the concentration gradient. When a region has a higher particle concentration than another, this is known as a concentration gradient. A concentration gradient will cause particles in passive transport to diffuse down it from higher concentration to lower concentration until they are evenly spaced.
The gradual separation of a region of high density from a region of low density in a solution in terms of the concentration of a dissolved material. Understanding how ions and particles flow randomly in a solution or gas depends on the concentration gradient.
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paulo is experimenting with H2O in its different states. He would like to present all the information he collected in one place. He thinks he should use a phase change diagram, but he isn’t sure. What information could you give Paulo to encourage him to use a phase change diagram?
The phase diagram makes it possible to predict the stability of any of the phases of water based on the diagram..
What is a phase diagram?Water is able to exist in three phases; solid, liquid and gas. The reason behind the phases of water is the fact that there are different degrees of intermolecular interactions that exists in the various phases of water.
Thus, on the phase diagram, of is easy to trace the the regions of temperature and pressure that corresponds to the solid, gaseous and liquid states of a given substance that could be used to make deduction about the substance.
The phase diagram shows the interaction between the various phases of water on the same diagram. This makes it possible to predict the stability of any of the phases of water based on the diagram.
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A chemist measures the amount of fluorine gas produced during an experiment. He finds that 3.8 g of fluorine gas is produced. Calculate the number of moles of fluorine gas produced. Round your answer to 2 significant digits.
Answer:
0.10
Explanation:
Molar mass of F2 gas = 38 g/mol.
Moles of F2 gas = 3.8/38 g/mol
=0.1
Rounded to 2 significant digits is 0.10.
0.10 moles F2 has been produced.
a block of wood has a volume of 45 cm ^3 and a mass of 180 grams what is the density of the wood
The density of a block of wood that has a volume of 45 cm³ and a mass of 180 grams is 4g/cm³.
How to calculate density?The density of a substance is the measure of the mass of matter contained in the substance by a unit volume.
The density of a substance can be calculated by dividing the mass of the substance by its volume i.e.
Density = mass (g) ÷ volume (mL)
According to this question, a block of wood that has a volume of 45 cm³ and a mass of 180 grams will possess a density of:
Density = 180g ÷ 45cm³ = 4g/cm³
Therefore, the density of a block of wood that has a volume of 45 cm³ and a mass of 180 grams is 4g/cm³.
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How would you prepare 10. 0 ml of a 0. 25% m/v hcl solution if 1% m/v hcl was available? how much 1% m/v hcl is needed? how much distilled water is used?.
7.5ml distilled water is used to 0. 0 ml of a 0. 25% m/v hcl solution if 1% m/v hcl was available
Here so 2.5 ml of 1% m/v HCl and (10 - 2.5) = 7.5 ml distilled water taken to prepare 10 mL of a 0.25% m/v HCl solution. 2.5 mL of 1 % m/v HCl is needed. 7.5 ml of distilled water is used to make 10ml solution and in that solution 1% hcl means 3.6 hcl is needed. mass of hcl is 36g/mol
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The is the si unit that expresses the amount of substance. Specifically, it is defined as the amount of substance containing the same number of entities as the number of in exactly 12 g of carbon-12.
The mole is the si unit that expresses the amount of substance
It provides a specific measure of the number of atoms or molecules in a bulk sample of matter. A mole is defined as the amount of substance containing the same number of discrete entities (atoms, molecules, ions) as the number of atoms in a sample of pure 12C weighing exactly 12 g
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What does dissolved carbon dioxide in the ocean produce?
a. hydrogen ions
b. algae
c. oxygen
d. nitrous oxide
Option A. Hydrogen Ions
The dissolution of carbon dioxide in the oceans produce hydrogen ions as when carbon dioxide is dissolved in the ocean it leads to Ocean Acidification. This Acidification produces the hydronium ions as more acidic nature implies higher concentrations of hydrogen ions.
Carbon dioxide is a gas that readily dissolves in water to give Carbonic Acid , bicarbonate ions and carbonate ions , all of which are acidic in nature. This lowers the pH of the ocean making the waters more acidic. Therefore the acidity of oceans is largely dependent on carbon compounds and the amount of Carbon dioxide.
The reaction of Carbon dioxide with water to give carbonic acid :
CO2 + H2O → H2CO3
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If two atoms are joined by a polar covalent bond, the shared electrons will tend to stay closer to the atom with ______.
If two atoms are joined by a polar covalent bond, the shared electrons will tend to stay closer to the atom with the higher electronegativity
What is electronegativity?An atom's ability to attract the electrons of a bond is known as its electronegativity, and it rises as this propensity does. A covalent bond is formed when two coupled atoms with the same electronegativity values are in close proximity to one another.
In a chemical bond, the more electronegative atom often attracts the electrons more than the other atom. A polar covalent bond is the result of this. The electrons are not at all shared if the electronegativity values are drastically different. To create an ionic bond, one atom effectively accepts the bond electrons from the other atom.
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What does it mean for matter to change physically?
Answer:
Its when it transforms into a diffrent product like water to ice.
Explanation:
46 pints = ? gallons
What distance in kilometers can you drive if your car gets 14.00 kilometers per liter and you have 35.00 liters of gas?
2.5 km is the distance you can travel if a car gets 14 kilometers per liter and have 35 liters of gas.
Total distance traveled in 1 liter = 14 km
Total gas in the car = 35 liters
We have to find how much distance can be covered in in35 liters of gas.
Distance is the length of the path traveled between two points. It is the total movement of an object in a direction. It measures length.
Distance = 35/14
Or, distance = 2.5 km
Therefore, the total distance that can be covered by a car in 35 liters of gas is 2.5 km.
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Calculate the moles of ammonia present in a 3.939 g sample of ammonia, which has a molar mass of 17.030 g/mol.
The moles of ammonia present in a 3.939 g sample having molar mass of 17.030 g/mol is 0.23 mole.
The mass of one mole of a substance, whether be an element or a compound is known as the molar mass.
If the molar mass of ammonia is 17.030 g/mol, then
In 1 mole of ammonia there are 17.030 g.
So, by definition of molar mass, there are-
17.030 g in 1 mole of ammonia,
In 3.939 g of ammonia, number of moles are -
number of moles = Given mass
Molar mass
moles = 3.939 g = 0.23 mol
17.030 g/mol
The moles of ammonia present in a 3.939 g sample are 0.23 mol.
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A hypothetical metal has the bcc crystal structure, a density of 7.24 g/cm3, and an atomic weight of 48.9 g/mol. the atomic radius of this metal is:_______
The atomic radius of this metal is 1.22 × 10⁻⁸ cm.
The atomic radius of a chemical element is a measure of the size of its atom.
d(metal) = 7.24 g/cm³; a density of a metal
M(metal) = 48.9 g/mol; an atomic weight of a metal
Na = 6.022×10²³; Avogadro's number
Z(metal) = 2; number of atom the BCC unit cell
a = ?; the side length of the BCC unit cell
a = ∛Z×M /d×Na
a = ∛(2×48.9 g/mol) ÷ (7.24 g/cm³×6.022×10²³)
a = 2.82 × 10⁻⁸ cm
r = a×√3 / 4; the atomic radius formula
r = 2.82 × 10⁻⁸ cm×√3 / 4
r = 1.22 × 10⁻⁸ cm
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state what would be observed if each of the following reagents was added to the solution of aluminum chloride
i) lead (ii) nitrate solution
ii) ammonia solution drop wise until in excess
Answer:
See explanation
Explanation:
1) a precipitate of lead chloride would be observed if the concentrations of both reagents was high enough and the temperature was low enough
2) A gelatinous white-ish precipitate would be observed at first, though i'm not sure what would happen with excess ammonia. The precipitate would likely not dissolve in excess ammonia
Which solution is more concentrated: a 100 mm solution of glucose (c6h12o6) or a 0.1 m solution of glucose?
Solute : The minor component in a solution mixed in the solvent. Example - Salt, Sugar, Carbon dioxide (CO2) , Acetic acid etc.
Solvent : The substances that are used to disslove solutes ( this may be in the form of solid, liquid and gases) is known as solvent. Example : Water, Milk, Air , Ethanol, Methanol etc.
Solution : A solution is a homongeneous composition of one or more solutes mixed in a solvent. Example : Salt Water, Sugar mixed in water, Alcohol in water etc.
Types of Solution : Hypotonic , Isotonic, Hypertonic.
According tov question,
100 mm solution of glucose is more concentrated than 0.1 m solution of glucose because when we try to find the molality of 100 mm solution it is 0.617 m hence 100 mm solution of glucose is greater.
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1.1.F - Lesson Review: What is Science Knowledge?
help xnx