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zlopas [31]
2 years ago
6

Explain what the color change indicated about the changes in the concentrations of Co(H2O) 6 2+ and CoCl 4 2- in each trial?

Chemistry
1 answer:
coldgirl [10]2 years ago
3 0

The color of the system will change between pink and blue depending on the concentration of species.

<h3>What is equilibrium?</h3>

Equilibrium is attained in a reaction when the rate of forward reaction is equal to the rate of reverse reaction. Now consider the equilibrium;

Co(H2O)6^2+(aq) + 4Cl^-(aq) ⇄ CoCl4^2-(aq) + 6H2O(l)

We know that Co(H2O)6^2+(aq) is pink while  CoCl4^2-(aq)  is blue hence, if the concentration of the species are changed, the color of the system will change accordingly.

Learn more about equilibrium: brainly.com/question/13524990?

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emmainna [20.7K]

D. 18 x 10^23 is the total number of atoms in 1.0 mole of CO2
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4 years ago
Which characteristic is typical of metals? A. They are brittle. B. They do not conduct electricity. C. They are highly soluble i
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D. They are malleable.


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3 years ago
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How many moles of O2 are consumed when 2.10 mol of magnesium burns?
katrin [286]

1.05 moles of oxygen gas are consumed in the reaction when 2.10 mol of magnesium burns.

<h3>What are moles?</h3>

A mole is defined as 6.02214076 × 10^{23} of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

We are given:

Moles of magnesium = 2.10 mol

For the given chemical reaction:

2Mg + O₂ → 2MgO.

By Stoichiometry of the reaction:

2 moles of magnesium react with 1 mole of oxygen gas.

So, 2.10 moles of magnesium will react with = \frac{1}{2} X2.10 =1.05 moles

Hence, 1.05 moles of oxygen gas are consumed in the reaction.

Learn more about moles here:

brainly.com/question/8455949

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6 0
2 years ago
000 atm of dry nitrogen, placed in a container having a pinhole opening in its side, leaks from the container 3.55 times faster
Ivanshal [37]
We will assume that the question is discussing 1.000 atm of N₂ initially. The question is discussing diffusion rates of two gases and asks us to identify the species. We can use Graham's Law to attempt this problem with the following formula:

Rate₁/Rate₂ = sqrt(M₂/M₁)

We are told that the N₂ is 3.55 times as fast as the unknown species, so rate 1 = 3.55 and rate 2 = 1. We know the molecular weight of N₂ as 28 g/mol. Now we can use the equation above to solve for the molecular weight of the unknown, M₂:

3.55/1 = sqrt(M2/28)
(3.55)² = M₂/28
M₂ = 28 (3.55)₂
M₂ = 353 g/mol

The unknown compound has a molecular mass of roughly 353 g/mol and this is very close to the molecular mass of UF₆ which is 352.02 g/mol. Therefore, it is likely that the unknown gas is UF₆.
7 0
4 years ago
How can I express the composition of a solution?
murzikaleks [220]

Answer:

It can be expressed in several ways: molarity (moles of solute per liter of solution); mole fraction, the ratio of the number of moles of solute to the total number of moles of substances present; mass percentage, the ratio of the mass of the solute to the mass of the solution times 100; parts per thousand (ppt), grams ...

Explanation:

It can be expressed in several ways: molarity (moles of solute per liter of solution); mole fraction, the ratio of the number of moles of solute to the total number of moles of substances present; mass percentage, the ratio of the mass of the solute to the mass of the solution times 100; parts per thousand (ppt), grams ...

4 0
3 years ago
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