24
Select the correct answer.
Which statement is correct?
A.
When the concentration of the reactant decreases, the cell potential increases.
B.
When the concentration of the reactant decreases, the cell potential does not change.
C.
When the concentration of the reactant increases, the cell potential decreases.
D.
When the concentration of the reactant increases, the cell potential increases.
E.
When the concentration of the reactant increases, the cell potential does not change.

24Select The Correct Answer.Which Statement Is Correct?A.When The Concentration Of The Reactant Decreases,

Answers

Answer 1

Answer:

the answer is b

Explanation:


Related Questions

PLEASE HELP!!!!! 10 POINTS!!
What electron could have quantum numbers n=3, l=0, ml=0, ms=-1/2

Answers

Answer:

Explanation:

It is a 3s electron

4. From the diagram above, what
would need to be the correct genotype for the two green beetles to have the outcome of generation 2?
a HH x hh
b. Hh x Hh
c. Hhxhh
d. Hh x HH

Answers

The correct answer is D

Water circulates through Earth's water cycle by changing its _____.
A. state
B. acidity
C. turbidity
D. composition
PLsss I need answers T-T

Answers

Water moved through the water cycle by changing its state. Think, for example, of water evaporating (liquid to gas), snow sublimating (solid to gas) or melting (solid to liquid), rain (gas to liquid), sleet (liquid to solid), or snow (gas to solid).

The answer would thus be A.
A would be your answer.

Name two processes which provide the best evidence for the motion of particles in matter.​

Answers

Answer:

Diffusion and Brownian motion are the two processes which provide best evidence for the motion of particles in matter.

WILL GIVE BRAINLIEST
Ammonia‌ ‌(NH‌3‌)‌ ‌readily‌ ‌dissolves‌ ‌in‌ ‌water‌ ‌to‌ ‌yield‌ ‌a‌ ‌basic‌ ‌solution.

‌NH‌3‌‌ ‌+‌ ‌H‌2‌O →‌ ‌NH‌4‌‌+ ‌+‌ ‌OH‌-

How is this substance classified?

A.
Arrhenius‌ ‌Base‌

B.
Arrhenius‌ ‌Acid

C.
Bronsted-Lowry‌ ‌Base‌

D.
Bronsted-Lowry‌ ‌Acid‌

Answers

Answer:

Qué es Crecimiento poblacional:

El crecimiento poblacional se refiere al incremento del número de habitantes en un espacio y tiempo determinado, el cual se puede medir a través de una fórmula aritmética. También se puede emplear como sinónimo el término crecimiento demográfico.

Cuando se hace mención al crecimiento poblacional se puede hacer referencia a cualquier especie animal, sin embargo, se suele usar para referirse a los seres humanos, en especial cuando se realizan investigaciones acerca del crecimiento de la población.

Los datos que se obtienen de estos análisis son de gran importancia, tanto para los gobiernos de un país como, para las diferentes organizaciones internacionales.

Cabe resaltar que durante el siglo XX la población de seres humanos ha crecido y sigue creciendo en gran porcentaje, lo que ha generado preocupación, en especial por sus consecuencias sobre el uso y cuidado de los recursos naturales, entre otros.

Las zonas urbanas son las que presentan mayor crecimiento demográfico, así como, los países en vías de desarrollo. Por el contrario, el crecimiento poblacional es menor en los países desarrollados.

Por ejemplo, el crecimiento poblacional en México ha ido en aumento a lo largo de su historia, es el país con más habitantes hispanohablantes en América Latina. México tiene una población aproximada a 130 millones de habitantes, y se estima que seguirá creciendo gracias a diversos factores gracias a su continuo desarrollo político, económico y social.

what is the definition of critical thinking from the book ?

Answers

Answer:

Critical thinking is the intellectually disciplined process of actively and skillfully conceptualizing, applying, analyzing.

Explanation:

The songs of birds are part of a ritual to attractpotential partners of their own species. The song presents specific patterns recognized only by membersof the same species. What advantage does this present for the species of birds?

Answers

Answer:

Explanation:

Bird courtship and mating dances include many unique ways to attract mates. Learn about their courtship behaviors and why they matter. ... When birders recognize courting birds, they can be sure to avoid disturbing ... the charming songs used to woo partners can help distinguish species so birds are sure ...

the pressure of a 250.0 mL volume of gas under 4.0 atm of pressure is decreased to 1.0 atm at constant tempture what is a new volume

Answers

Answer:

1000 mL

Explanation:

The new volume can be found by using the formula for Boyle's law which is

[tex]P_1V_1 = P_2V_2[/tex]

Since we're finding the new volume

[tex]V_2 = \frac{P_1V_1}{P_2} \\[/tex]

We have

[tex]V_2 = \frac{250 \times 4}{1} = 1000 \\ [/tex]

We have the final answer as

1000 mL

Hope this helps you

Net ionic equation for sodium carbonate and sulfuric acids?

Answers

Answer:

CO₃²¯(aq) + 2H⁺(aq —> H₂O(l) + CO₂(g)

Explanation:

The net ionic equation for sodium carbonate (Na₂CO₃) and sulfuric acid (H₂SO₄) can be obtained as follow:

Na₂CO₃ + H₂SO₄ —>

In solution, Na₂CO₃ and H₂SO₄ will dissociate as follow:

Na₂CO₃(aq) —> 2Na⁺(aq) + CO₃²¯(aq)

H₂SO₄(aq) —> 2H⁺(aq) + SO₄²¯(aq)

Na₂CO₃(aq) + H₂SO₄(aq) —>

2Na⁺(aq) + CO₃²¯(aq) + 2H⁺(aq) + SO₄²¯(aq) —> 2Na⁺(aq) + SO₄²¯(aq) + H₂O(l) + CO₂(g)

Cancel out the spectator ions (i.e Na⁺ and SO₄²¯) to obtain the net ionic equation.

CO₃²¯(aq) + 2H⁺(aq —> H₂O(l) + CO₂(g)

A 4.00g sample of helium has a volume of 24.4L at a temperature of 25.0 C and a pressure of 1.00 atm. The volume of the helium is reduced to 10.4L, but the temperature and pressure of the gas are kept constant. What is the new quantity of the gas in moles

Answers

Answer:

0.852 mol

Explanation:

First we convert 4.00 g of helium (He) into moles, using its molar mass:

4.00 g ÷ 2 g/mol = 2 mol He

To answer this problem we can use Avogadro's law, which states that at constant pressure and temperature:

V₁n₂=V₂n₁

Where:

V₁ = 24. 4 Ln₂ = ?V₂ = 10.4 Ln₁ = 2 mol

We input the data:

24.4 L * n₂ = 10.4 L * 2 mol

And solve for n₂:

n₂ = 0.852 mol

Deforestation affects which of the following?
O none of the cycles
Owater cycle and carbon cycle
O carbon cycle only
O water cycle only

Answers

Answer:

water cycle and carbon cycle

Carbon cycle ................I think water cycle too.....


What is the volume of a container that contains 12.6 grams of nitrogen at 25°C and 1100 kPa?

Answers

Answer:

1.0 L

Explanation:

Use the ideal gas law PV=nRT where P is pressure = 1100 kPa, V is the volume you are calculating, n is the number of moles which can be calculated by dimensional analysis and the periodic table, R is the ideal gas constant in this case R=8.314 kPa L/K mol, and T is the temperature in kelvins. See attached image for work through. 1.0 L is the answer with two sig figs.

How many grams are there in 2 x 1024 molecules of BCl3?

Answers

Answer:

How many grams are there in 1x10^24 molecules of BCl3? I use 117.17 as the molecular weight.

Looking for fresh, preservative-free food? Look no further!

How many grams are there in 1x10^24 molecules of BCl3? I use 117.17 as the molecular weight.

Did you try approaching this problem with dimensional analysis?

We know:

1×1024 molecules

117.17 g/mol

And we want our answer to be in g.

molecules ×gmolדconversion factor"=g

The conversion factor has to have units of

molmolecules in order for everything to work out.

What property do you know that has units of molmolecules?

I don’t know of any, but I do know that Avogadro’s number has units of moleculesmol. So for our conversion factor, we divide by Avogadro’s number, which is the same thing as multiplying by its inverse.

1×1024 molecules×117.17 gmol×mol6.022×1023molecules=

The “molecules” units cancel. The “mol” units cancel. Leaving us with “g”. The dimensions (units) work out. Now just do the math with the numbers.

Explanation:

State and explain the three basic properties of element​

Answers

Answer: Some are solid, some are gaseous, a few are liquid. Some are metallic: they have a peculiar lustre; some are coloured (like sulfur) or colourless. Some have a low density; some have a high density. Some are malleable and ductile; some are brittle. Some conduct electricity and heat well; some don’t.

Many metals tend to have structural uses. Nonmetallic elements less so.

Metals tend to have crystal forms featuring close-packed centro-symmetrical structures. Nonmetallic elements tend to have crystal structures featuring more open and directionally packed structures.

Some are especially toxic; some are essential to life; some are both depending on exposure level.

Most are stable; some are less so.

Some elements are highly reactive; some are almost inert (helium, neon, and argon may be completely inert in ambient conditions).

Many metals have basic oxides; quite a few oxides of nonmetallic elements form acids when they are dissolved in water. Some elements can go both ways.

There are many generalisations you can make about metallic and nonmetallic elements, and quite a few exceptions at the margins.

Explanation:

Given :-

State and explain the three basic properties of element.

Answer :-

Some properties of an element can be observed only in a collection of atoms or molecules of the element. These properties include color, density, melting point, boiling point, and thermal and electrical conductivity.

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Answered by - ItzMaster

Dos objetos presentan fuerzas eléctricas repulsivas entre sí. ¿Cómo pueden ser las cargas eléctricas de estos objetos?

Answers

Answer:

Las cargas eléctricas de los objetos son ambas positivas o son ambas negativas.

Explanation:

Si dos objetos presentan fuerzas eléctricas repulsivas entre sí, quiere decir que ambos tienen el mismo tipo de carga.

Las cargas iguales (positivo con positivo, o negativo con negativo) se repelen, mientras que las cargas diferentes (positivo con negativo) se atraen.

A sample of gas at 300k has a volume of 2 liters at what temperature will the volume decrease to 1 liter if the pressure is kept constant

Answers

Answer:PV=nRT ideal gas law

P presdure

V volume

n number of moles of gas

R gas constant

T temperature

Explanation: V=nRT/P

2liters=nR300k/P

divide by 2 for the equation

1liters=nR150k/P

with nR remaining constant

A scientist is investigating which type of medicine would dissolve faster, a solid pill or a scoop of powder. Which hypothesis should the scientist develop given prior knowledge about surface area?
A. Solid pills have more surface area and will take longer to dissolve.

B. Solid pills have less surface area and will not dissolve.

C. Powders have less surface area and will dissolve faster.

D. Powders have more surface area and will dissolve faster.

Answers

Answer: The correct option is D (Powders have more surface area and will dissolve faster).

Explanation:

For a scientist to investigate whether a powered pill will dissolve faster than a solid pill is putting the rate of the reaction under study.

Rate has to do with what is achieved per unit time. One of the factors affecting rates of chemical reaction includes the SURFACE AREA.

Reagents in solution tend to react faster than reagents in solid form. This is because molecules are freer to move about and collide more effectively in solutions. For solids, the more the surface area exposed for reaction the faster the reaction. For example, a lump of Zinc will not react as fast as powdered zinc with dilute hydrochloric acid to produce hydrogen.

Therefore, with the above explanation and example concerning surface area in a chemical reaction, the hypothesis the scientist should develop is that powers which has more surface area will dissolve faster than the soils pills.

Answer:

The correct option is D (Powders have more surface area and will dissolve faster).

Explanation:

Page
Tone +
coto =seco Loseco.​

Answers

yes ma’am indeed yes correct all the way

How does temperature affect the spontaneity of a reaction?
A. Increasing the temperature always makes a reaction less likely to
be spontaneous
B. Increasing the temperature will not affect the spontaneity of a
reaction.
C. Increasing the temperature always makes a reaction more likely to
be spontaneous.
D. Increasing the temperature makes a reaction spontaneous in
some situations.

Answers

Answer:

D

Explanation:

took the test

The statement 'increasing the temperature makes a reaction spontaneous in some situations'  indicates how temperature affects the spontaneity of a reaction.

What is a chemical reaction?

A chemical reaction is a given process in which one or more reactants are converted into different products.

A chemical reaction is composed of catalysts such as enzymes that speed up its velocity.

Temperature represents a fundamental variable in a chemical reaction.

In conclusion, the statement 'increasing the temperature makes a reaction spontaneous in some situations'  indicates how temperature affects the spontaneity of a reaction.

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https://brainly.com/question/1156488

How many atoms does NH4Br have

Answers

Answer:

6

Explanation:

bromine has 1, hydrogen has 4 and nitrogen has 1 therefore equaling 6

The number of atoms in NH₄Br is six.

What is an atom?

An atom is a particle of matter that uniquely defines a chemical element. An atom consists of a central nucleus that is 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 are the basic building blocks of matter. Anything that takes up space and anything with mass is made up of atoms.

In the given formula, there is one N atom, four H atoms and one Br atom making a total of six atoms.

Therefore, the number of atoms in NH₄Br is six.

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what is modal class?

தமிழ் வாழ்க ​

Answers

Answer:

Modal means the one that occurs most often (averages: mode). In maths, the mode is one of the most common ways to describe a set of data. ... The modal class is, therefore, the group with the highest frequency.

Answer:

Modal means the one that occurs most often (averages: mode). In maths, the mode is one of the most common ways to describe a set of data. ... The modal class is, therefore, the group with the highest frequency. For example: if you counted the number of pencils in different pencil cases and you decided to group them.

Explanation:

தமிழன் ❤

Which of the following are properties of compounds formed by ionic bonding? Hint: Select the best three answers.

Select all that apply:
A : lonic compounds have lower melting points than covalent compounds.

B : lonic compounds form when combining a metal atom with a nonmetal atom.

C : lonic compounds form when combining a two metal atoms.

D : lonic compounds form when combining two or more nonmetal atoms.

E : When you dissolve an ionic compound in water, the solution conducts electricity.

F : When you dissolve an ionic compound in water, the solution does not conduct electricity

G : lonic compounds generally have higher melting points than covalent compounds. ​

Answers

Answer:

the correct answers are:

B

E

G

Ionic compounds are compounds that are formed between metallic ions and non-metalilc ions and have high melting and boiling points

What are ionic compounds?

Ionic compounds are compounds which are formed as a result of the force of attraction between oppositely charged ions.

The properties of ionic compounds include:

lonic compounds form when combining a metal atom with a nonmetal atom. When you dissolve an ionic compound in water, the solution conducts electricitylonic compounds generally have higher melting points than covalent compounds

Therefore, ionic compounds are compounds that are formed between metallic ions and non-metallic ions and have high melting and boiling points.

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1. Long strands of DNA that contain lots of genes

A. Allele
B. Inherited Trait
C. Gene
D. Chromosome

Answers

Answer: chromosome

Explanation: :)

D.Chromosome Good luck :)

What volume, in liters, does the following quantity of gas at STP occupy?

7.8*10^15

thank you

Answers

Answer:

2.9x10⁻⁷L is the volume this amount of gas occupy

Explanation:

Assuming there are 7.8x10¹⁵ atoms

Based on the general gas law:

PV = nRT

Where P is pressure = 1atm

V is volume = Our incognite

n are moles of the gas:

7.8x10¹⁵ atoms * (1mol / 6.022x10²³ atoms) = 1.30x10⁻⁸ moles of gas

R is gas constant = 0.082atmL/molK

And T is absolute temperature = 273.15K at STP

Solving for Volume:

V = nRT/P

V = 1.30x10⁻⁸ moles*0.082atmL/molK*273.15K / 1atm

V = 2.9x10⁻⁷L is the volume this amount of gas occupy

The form in which the chemical energy is stored in cells during photosynthesis
A) Photosynthesis
B)Products
C)Chloroplasts
D)Glucose

Answers

D. Glucose it’s is stored in the form of glucose inside of chloroplasts

10. Air is a homogenous mixture of gases. Oxygen is 20% by volume of air typically. What
amount of moles of oxygen is present in 20 L of air at STP?

Answers

Answer:

893 moles

Explanation:

An ideal gas at STP occupies 22.4 liters. Calculating Oxygen as if it were an ideal gas there are . 893 moles of Oxygen in 20.0 liters.

Summer happens in Vermont when the sun's rays hit it less or more directly than any other time of year .

Answers

Answer:

More directly.

Explanation:

Summer happens in Vermont when the sun's rays hit it more directly than any other time of year because this direct angle causes more warm environment. In the winter season, the angle of sun is about 45° due to which the place receives less solar radiation and the environment is cold while on the other hand, in the summer season the angle of the sun is about 90° due to which direct sunlight occurs on the region that causes warm and hot environment.

Which of the following formulas represent acids? Select all that apply.
a. NaOH
b. HCI
c. H2SO4
d. Ca(OH)2
e. KOH
f. HNO3

Answers

Answer:

B. HCl, C. H2SO4, F. HNO3

Explanation:

Acids have hydrogen (H) at the beginning

bases have OH at the end

HCl, H₂SO₄,HNO₃ are the chemical formulas which represent acids.

What are acids?

Acids are defined as substances which on dissociation yield H+ ions , and these substances are sour in taste. Out of the following , given sets of compounds HCl, H₂SO₄ and HNO₃ are acids as they yield H+ ions on dissociation.

According to the number of H+ ions which are generated on dissociation acids are classified as mono-protic , di-protic ,tri-protic and polyprotic  acids  depending on the number of protons which are liberated on dissociation.

Acids are widely used in industries  for  production of fertilizers, detergents  batteries and dyes.They are used in chemical industries for production of chemical compounds like salts which are produced by neutralization reactions.

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Which would easily give up more electrons during bonding?

Answers

Lie I think I believe

What is the molarity of .65 L of solution containing 63 grams of NaCl? (dont forget to convert grams to moles)

Answers

Answer:

1.66 M

Explanation:

Molarity = moles/L solution

We have the following data:

mass NaCl = m = 63 g

volume of solution = V = 0.65 L

Thus, we first convert the mass to moles with the molar mass of NaCl (MM):

MM(NaCl) = 23 g/mol Na + 35.4 g/mol Cl = 58.4 g/mol

moles NaCl = m/MM = 63 g/(58.4 g/mol)= 1.08 mol

Finally, we divide the moles into the volume of solution to calculate the molarity:

M = moles NaCl/V = 1.66 mol/L

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