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3 years ago

9

Create a chemical equation for "Bubbling chlorine gas through a solution of sodium bromide gives elemental bromine and a solutio

n of sodium chloride" and balance it.

1 answer:

Alexxandr [17]3 years ago

5 0

Answer:

$Cl_{2} +2NaBr ---> 2NaCl + Br_{2}$

Explanation:

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In the reaction of nitrogen with hydrogen to produce ammonia, NH3, how many moles of ammonia would be produced from 1.0 mol of h

Lina20 [59]

N2 + 3H2 ------> 2NH3
According to the equation;
3 mol of hydrogen will produce 2mol of ammonia.
1 mol of hydrogen _____________________?

= 2 × 1/3

= 0.67 mol

7 0

3 years ago

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How many grams of silver are in 4.2 moles of silver?

Phantasy [73]

Answer:

Solution: Since the atomic mass of silver (Ag) is 107.87 amu, one mole of silver has a mass o f 107.87 grams. Therefore, there is one mole of Ag per 107.87 grams of Ag

Explanation:

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3 years ago

If an obect looks blue it reflects____ waves

amid [387]

All but blue cuh ♿️

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3 years ago

As the temperature of a medium increases, the speed of the sound wave

Irina-Kira [14]

Answer : As the temperature of a medium increases, the speed of the sound wave increases because the particles bump into each other more often.

Explanation :

The dependency of the speed of the sound wave and the temperature of the medium is :

$v=\sqrt{\gamma\ R\ T}$

Where

$\gamma$ = ratio of specific heat

R is gas constant

T is the temperature

The speed of the wave is directly proportional to the temperature. As the temperature of a medium increase, the speed of the sound increase. The particles start vibrating faster. Hence, they bump into each other.

Hence, the correct option is (A).

8 0

3 years ago

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The Ksp of CaF2 is 4.0 x 10-11. What is the solubility of CaF2 in 0.10 M Ca(NO3)2? Give your answer using scientific notation an

Ilya [14]

Answer:

$1.0\times 10^{-5} M$ is the solubility of $CaF_2$ in 0.10 M $Ca(NO_3)_2$ .

Explanation:

Concentration of calcium nitrate = $[Ca(NO_3)_2]=0.10 M$

$Ca(NO_3)_2\rightarrow Ca^{2+}+2NO_3^{-}$

$[Ca(NO_3)_2]=0.10 M=[Ca^{2+}]$

Solubility product of the calcium fluoride = $K_{sp}=4.0\times 10^{-11}$

Solubility of calcium fluoride in calcium nitrate solution :

$CaF_2\rightleftharpoons Ca^{2+}+2F^-$

(0.10+S) (2S)

The expression of solubility is given by :

$K_{sp}=[Ca^{2+}][F^-]^2$

$4.0\times 10^{-11}=(S+0.10)(2S)^2$

Solving for S:

$S=1.0\times 10^{-5} M$

$1.0\times 10^{-5} M$ is the solubility of $CaF_2$ in 0.10 M $Ca(NO_3)_2$ .

3 0

3 years ago