3 years ago

If the name of a compound contains the name of a metal and a nonmetal,

Chemistry

1 answer:

pychu [463]3 years ago

7 0

It is an ionic bond because it has a metal and a non metal

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How many grams of sodium chloride are required to make a 1.0 L solution with a concentration of 3.5 M?

satela [25.4K]

3.5 M has 3.5 moles per litre
so we have one litre, so we need 3.5 moles
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A 10.0-milliliter sample of NaOH(aq) is neutralized by 40.0 milliliters of 0.50 M HCl. What is the molarity of the NaOH(aq)?

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$\frac{10 mL}{1000 mL} = 0.01 L$

$\frac{40mL}{1000mL} =0.04L$

$M _{1} V_{1}=M_{2}V_{2}$

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A solution was made by dissolving 1.77 g Ba(OH)2 in 100. mL final volume. (Note: For the purpose of significant figures, assume

Nata [24]

Answer: The molar concentration of $OH^-$ in the solution is 0.2 M

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

$Molarity=\frac{n\times 1000}{V_s}$

where,

n= moles of solute = $\frac{\text {given mass}}{\text {molar mass}}=\frac{1.77g}{171g/mol}=0.010$

$V_s$ = volume of solution in ml = 100 ml

$Molarity=\frac{0.010\times 1000}{100}=0.1M$

$Ba(OH)_2\rightarrow Ba^{2+}+2OH^-$

As 1 mole of $Ba(OH)_2$ gives 2 moles of $OH^-$

Thus 0.1 moles of $Ba(OH)_2$ gives = $\frac{2}{1}\times 0.1=0.2$ moles of $OH^-$

The molar concentration of $OH^-$ in the solution is 0.2 M

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3 years ago