Use the oxidation states as indicated by the superscript numbers to answer the questions. k( 1)cl( 5)o3(-2) → k( 1)cl(-1) o2(0) which element is oxidized? which element is reduced? which element does not change in the oxidation state? how many electrons will be moved to have a balanced reaction?

The volume of stock solution they use to make the required solution is 6.94mL.

To calculate the value of required volume we will use the below equation:

M₁V₁ = M₂V₂, where

M₁ = molarity of stock solution = 18M

V₁ = volume of stock solution = to find?

M₂ = molarity of H₂SO₄ solution = 2.50M

V₂ = volume of H₂SO₄ solution = 50mL

On putting all these values on the above equation and calculate for the value of V₁ as:

V₁ = (2.50)(50) / (18) = 6.94mL

Hence correct option is (3) i.e. 6.94mL.

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Answer:

C. 6.94 mL

Explanation:

Correct on Edge 2022!!!

Good luck everyone, you got this! Have a great day!

Answer:

the difference in the motion of molecules in an atom when its in the solid, liquid and gas state is that they move slower or faster dependant on which state they are in, solids having the slowest moving particles and gasses having the fastest moving particles

Answer:

C. The dissolving reaction of A was exothermic and the dissolving of reaction B was endothermic

Explanation:

Here is stuff to help you:

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If a cheetah can run 1 meter in 0.0346812 seconds, the cheetah can run 64.5mph.

The average speed of a moving body can be calculated by dividing the distance moved by the body by the time taken. That is;

Average speed = Distance/Time

Average speed = 1m/0.0346812s

Average speed = 28.83m/s.

The average speed in m/s can be converted to mph as follows:

1 metre per second = 2.237 miles per hour

28.83m/s = 64.5mph

Therefore, if a cheetah can run 1 meter in 0.0346812 seconds, the cheetah can run 64.5mph.

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I think the answer will be:

C. Increase the rate forward and reverse reactions equally.

Answer:

Well first, a scientific claim is claims or statements after experimenting. Similar to other claims but they have evidence and data to support the claim.

So we would show demonstrations because we need support our scientific claim.

Answer:

Na, K, Fe, Zn, Br,

Explanation:

look at periodic table. size increases left to right and from top to bottom.

P, R, and T are constant, then the volume is directly proportional to the mole. Then the correct option is A.

An ideal gas is a theoretical composed of a set of randomly moving gas particles that interacts only through elastic collision.

Given

A balloon containing 0.040 mol of a gas with a volume of 5.0 mL was expanded to 1.0 L.

[tex]V_1=5\ ml[/tex]

[tex]V_2=1000\ ml[/tex]

[tex]n_1=0.040\ mole[/tex]

We know the equation of the ideal gas.

[tex]PV=nRT[/tex]

where P, R, and T are the constant, then

[tex]\dfrac{V_2}{V_1}=\dfrac{n_2}{n_1}[/tex]

[tex]V_2=n_2\times \dfrac{V_1}{n_1}[/tex]

Thus, the correct option is A.

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Answer:

answer in picture

Explanation:

Considering the definition of Q, the reaction quotient Q has a value of 450.

The reaction quotient Q is a measure of the relative amount of products and reactants present in a reaction at a given time when a reaction has not yet reached equilibrium.

For the reaction aA + bB ⇄ cC + dD, Q adopts the expression:

[tex]Q=\frac{[C]^{c}[D]^{d} }{[A]^{a} [B]^{b} }[/tex]

That is, Q is defined as the ratio between the equilibrium concentrations of products and reactants raised to their respective stoichiometric coefficients, at a given temperature.

Comparing Q with Kc allows us to find out the state and evolution of the system:

In this case the system is:

H₂(g) + I₂(g) ↔ 2 HI(g)

So, Q adopts the expression:

[tex]Q=\frac{[HI]^{2} }{[H_{2} ] [I_{2} ] }[/tex]

You know:

Replacing in the expression of Q:

[tex]Q=\frac{(3 M)^{2} }{(0.2 M) (0.1 M)}[/tex]

Solving:

[tex]Q=\frac{9 M^{2} }{0.02 M^{2} }[/tex]

Q= 450

Finally, the reaction quotient Q has a value of 450.

In this case, the reaction quotient is greater than the equilibrium constant, Q > Kc. Then, the system is not in equilibrium. The forward reaction predominates and the system will evolve to the left to increase the concentration of reactants.

Learn more about reaction quotient Q:

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Answer:

The responding variable

Explanation:

The independent variable in a study refers to the factor that is being manipulated in an experiment.

As the independent variable is changed, its effect on the responding (dependent) variable is accessed.

The responding variable changes as the independent variable is manipulated, they do not mean the same thing.

Answer:

90

Explanation:

because i ansered this before

Answer: Basilosaurus is a prehistoric whale which lived approximately 40 million to 34 million years ago during the Late Eocene Period.

Explanation:

Answer:

11. I think the answer is, Both humans and whale embryos have a tail and a backbone (I'm not sure).

12. Basilosaurid, any member of the family Basilosauridae, an early group of whales that lived from the middle Eocene to the late Oligocene Epoch (about 41 million to 23 million years ago).

13.  Protocetids had long snouts, large eyes, and their nasal opening was farther caudally than in earlier archaeocetes.

Hope this helps! :D

Answer:

243 miles in 3 hours

Explanation:

81 mph x 3 hours

243 miles in 3 hours

Answer:

(Foliated means the parallel arrangement of certain mineral grains that gives the rock a striped appearance.) Foliation forms when pressure squeezes the flat or elongate minerals within a rock so they become aligned.

Answer:

Pure copper sulphate can be obtained from an impure sample by re-crystallization. The impure sample is dissolved in water, heated and then cooled which then later forms crystals. These copper sulphate crystals are then separated by filtration and drying.

Answer: They are terrestrial because they are on land.​ so D

Explanation:

because both of them are terrestrial, not aquatic and so rainforests receive a lot of rain like 2.000 to 10,000 rain per year but deserts get less rain although that big difference makes more sense so it is option D.

Answer:

evaporation?

Explanation:

evaporate the water leaving behind the sand?

Answer: 1(2)+6(2)=14

Explanation:

Not sure, but maybe.

Answer:

because of nothing...............................

Answer:

The answer is 14,400 seconds.

Explanation:

Hope it helps man ...

Answer:14400secondsExplanation:                                                                            

Answer:

89.86 g/mol

i hope it help:^

♡♡

Answer:

Explanation:

Part A

2 Al + 3 Cl_2 ==>  2 AlC_3

Part B

The balanced equation tells you for every 2 mols of Al you will produce 2 mols of AlCl_3

Find the mass of 1 mol of AlCl_3

Mass Al =                    27

Mass 3Cl = 3*35.5 = 106.5         Add

Mass 1 mol AlCl_3 = 133.5

Answer: 2 mols of AlCl_2 = 267.0 grams

Answer:

3750 cm.

Explanation:

You multiply the three side measurements to find the volume.

25cm·10cm·15cm

375cm·10cm

3750 cm.

Hope this helps!

Answer:3750cm

Explanation: 25cm by 10cm is 250cm. Then 250cm by 15cm is 3750cm. To find volume, first you multiply length by width, then the answer of that you multiply by height.

Answer:

I drew an amazing picture explaining everything....

Explanation:

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Answer:

Winnowing

Explanation:

Wind blows the lighter(in terms of mass) chaff from the whole grains,which are heavier(in terms of mass)

Question

Answer

Explanation

Radio Frequency Is one of the electromagnetic frequency waves that lie in the range stretching from below 3 kilohertz to around 300 gigahertz and which includes the frequencies used for communication signals (such as for radio and television broadcasting and cellular telephone and satellite transmissions)

I hope this helps

Answer:

Both will be the same

Do refer to the calculation above, hopefully it matches your answer.

Answer:

The adjustable legs and the table of sand.

Note:The question is incomplete. The complete question is given below.

Using Models to Answer Questions About Systems

Armando’s class was looking at images of rivers formed by flowing water. Most of the rivers were wide and shallow, but one river was narrow and deep. Armando’s class thinks that this river is narrow and deep because:

Armando designed the model below to try to answer the question: Why is this river so narrow and deep?

Explanation:

The model designed by Armando will be helpful to answer the question because of the following features it possesses:

1. An adjustable leg- since one of the hypotheses put forward by the class to explain why the river was narrow and deep was that the hill that the water flowed down was very steep, the adjustable legs can be lowered or raised in order to make the slope shallower or steeper so that their hypothesis can be tested.

2. A table of sand- the table of sand serves as the streambed. By adjusting the size of the sand grains to be larger or smaller, the students will be able to to test their second hypothesis that the small size sand grains that the water flowed through was the reason for the river to be narrow and deep.

The results of their experiments will enable them to come to a conclusion.

Answer:

Solid

Explanation:

Gas and liquids cant have definite shape which should be crossed off after you read shape because gas goes everywhere and liquids are too runny

Answer:

[tex]P_T = 1627\text{ mm Hg}[/tex]

Explanation:

Dalton's law of partial pressures states that the total pressure in a mixture of gases is the sum of the partial pressures of the individual gases.

In other word:
[tex]\displaystyle P_T = P_A + P_B + P_C[/tex]

Therefore, the total pressure of the mixture of three gases is:
[tex]\displaystyle \begin{aligned} P_T & = (445 \text{ mm Hg}) + (560\text{ mm Hg}) + (622\text{ mm Hg}) \\ \\ & = 1627 \text{ mm Hg}\end{aligned}[/tex]

In conclusion, the total pressure of the mixture is 1627 mm Hg.