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amid [387]
4 years ago
12

Three molecular or ionic compounds you commonly use

Chemistry
1 answer:
pantera1 [17]4 years ago
6 0
Sodium<span> and </span>chlorine<span> ions come together to form </span><span>sodium chloride which is essentially table salt.

Sodium fluoride, which is used in toothpaste to help prevent tooth decay.

Anddd there's sodium sulfate which is commonly used in soaps and detergents.</span>
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The volume of a gas is 5.0 L at 278 K. If the temperature of the gas
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6 0
4 years ago
If 2.76 g of CuNO3 is dissolved in water to make a 0.350 M solution, what is the volume of the solution?
Licemer1 [7]
I can't remember any of the weights of the individual elements but here is how you solve it:
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5 0
3 years ago
A solution of acetic acid has a pH of 3.45. What is the concentration of acetic acid in this solution? Ka for CH3COOH is 1.8×10-
Serjik [45]

Answer:

0.007 M

Explanation:

pH is defined as the negative logarithm of the concentration of hydrogen ions.

Thus,  

pH = - log [H⁺]

The expression of the pH of the calculation of weak acid is:-

pH=-log(\sqrt{k_a\times C})

Where, C is the concentration = ?

Given, pH = 3.45

So, for CH_3COOH, K_a=1.8\times 10^{-5}

3.45=-log(\sqrt{1.8\times 10^{-5}\times C})

\log _{10}\left(\sqrt{1.8\cdot \:10^{-5}C}\right)=-3.45

C = 0.007 M

5 0
3 years ago
Which of the following statements best describes a limiting reactant?
sertanlavr [38]

Answer:

c. The reactant that is used up before the others  

Explanation:

b. is also correct, because the limiting reactant is completely used up.

a. and d. are wrong. They describe the excess reactant.

5 0
3 years ago
Read 2 more answers
Write the empirical formula for at least four ionic compounds ca2+.v5+,f-,s2
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8 0
4 years ago
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