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2 years ago

What is the purpose of finding oxidation states in the half-reaction method for balancing equations?

Chemistry

1 answer:

stiv31 [10]2 years ago

5 0

B is the answer 100%

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In Chemistry, to be classified as an organic substance, a substance must contain

Natasha_Volkova [10]

I'm going on a limb here, but Carbon is a definite.

4 0

2 years ago

The solubility product of PbI2 is 7.9x10^-9. What is the molar solubility of PbI2 in distilled water?

Agata [3.3K]

Answer: The molar solubility of $PbI_2$ is $1.25\times 10^{-3}mol/L$

Explanation:

Solubility is defined as the maximum amount of solute that can be dissolved in a solvent at equilibrium.

Solubility product is defined as the product of concentration of ions present in a solution each raised to the power its stoichiometric ratio.

The balanced equilibrium reaction for the ionization of calcium fluoride follows:

$PbI_2\rightleftharpoons Pb^{2+}+2I^-$

s 2s

The expression for solubility constant for this reaction will be:

$K_{sp}=[Pb^{2+}][I^-]^2$

We are given:

$K_{sp}=7.9\times 10^{-9}$

Putting values in above equation, we get:

$7.9\times 10^{-9}=(s)\times (2s)^2\\\\7.9\times 10^{-9}=4s^3\\\\s=1.25\times 10^{-3}mol/L$

Hence, the molar solubility of $PbI_2$ is $1.25\times 10^{-3}mol/L$

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2 years ago

How cows are contributing to climate change.

AnnyKZ [126]

Answer:

they are apart of the life cycle

Explanation:

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3 years ago

Calculate the percent composition of Ca3P2

Afina-wow [57]

Calculate the molar mass of Ca3P2 in grams per mole or search for a chemical formula or substance.

8 0

3 years ago

Read 2 more answers

Empirical formula of a compound is CH3. If the molar mass of the

Nonamiya [84]

Answer:

Explanation:

HERE WE TAKE CH3,

C = 1 × 12 = 12g

H₃= 3 × 1 = + 3g

CH3 =15 g ans

7 0

2 years ago