3 years ago

Why are most household items made up of oxygen?

Chemistry

1 answer:

Alchen [17]3 years ago

5 0

It is in our atmosphere

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Q10.An aqueous solution contains 5.00x10-2 mol/L of Ca2+ and 7.00x10-3 mol/L of SO4

romanna [79]

Answer:

The precipitate will form.

Explanation:

Let's write the equilibrium expression for the solubility product of calcium sulfate:

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The solubility product is defined as the product of the free ions raised to the power of their coefficients, in this case:

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Our idea is to find the solubility quotient, Q, and compare it to the K value. A precipitate will only form if Q > K. If Q < K, the precipitate won't form. In this case:

$Q_{sp}=[Ca^{2+}][SO_4^{2-}]=5.00\cdot10^{-2} M\cdot7.00\cdot10^{-3} M=3.5\cdot10^{-4}$

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$Q_{sp}>K_{sp}$

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4 years ago

Which of the following is an element <br> 1 .carbon dioxide<br> 2. sodium<br> 3. Ammonia<br> 4. sand

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