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2 years ago

In the reaction 2k (s) + 2h2oh (aq) + h2 (g) which of the reactants is a solid

Chemistry

1 answer:

Y_Kistochka [10]2 years ago

4 0

Answer is A. Because K is potassium which is a metal

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An ionic solid is placed in water. which information is described by the solubility product constant?

Illusion [34]

Answer:

$\boxed{\text{C. the equilibrium between the solid and its ions in solution}}$

Explanation:

$\rm MX(s) $\, \rightleftharpoons \,$ M$^{+}$(aq) + $^{-}$(aq); $K_{\text{sp}}$ = [M$^{+}$][X$^{-}$]\\\\\text{$K_{\text{sp}}$ gives us information on}\\\\\boxed{\textbf{ the equilibrium between the solid and its ions in solution}}$

It tells us nothing about the amount of precipitate that will form or the temperature at which the equilibrium occurs.

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3 years ago

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DedPeter [7]

Answer:

Lithium has 3 protons, 4 neutrons, 3 electrons, and its mass is 6.941 u

4 0

2 years ago

What are atoms made of

navik [9.2K]

Protons, nuetrons, and electrons

3 0

2 years ago

A student has two unopened 33 CL cans containing carbonated water. Can A has been stored in the garage 32 degrees and can B has

IgorC [24]

Answer:

A. Can A will make a louder and stronger fizz than can B.

Explanation:

The solubility of a gas in a liquid decreases as the temperature increases, so the warmer can will have more undissolved carbon dioxide.

The warmer can will be under greater pressure, so it will make a louder and stronger fizz.

7 0

3 years ago

50.0 g of NaNO3 are dissolved into enough water to make 250 mL of solution. What is the molarity of this solution?

d1i1m1o1n [39]

Answer:

2.35 M

Explanation:

Molarity is mol/L of solution. We have to convert the g to mol and the mL to L. G to mol uses the molar mass of the compound. The molar mass of NaNO₃ is 85.00g/mol.

$50.0gNaNO3*\frac{1molNaNO3}{85.00gNaNO3} = 0.588molNaNO3$

Then you have to convert mL to L.

$250mL*\frac{1L}{1000mL} = 0.250L$

Now divide the mol by the L.

$\frac{0.588mol NaNO3}{0.250L} = 2.352 M$

Round to the smallest number of significant figures = 2.35M

7 0

2 years ago