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Viefleur [7K]
3 years ago
15

The table below lists the densities of some common materials at 20 degrees Celsius.

Chemistry
1 answer:
DerKrebs [107]3 years ago
7 0
Mercury would have the greatest density
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Interpretacao gerais das praticas <br>sobre densidade de amostra solido e liquido<br>​
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O sólido tem densidade mais alta em comparação ao líquido.

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A densidade da amostra sólida é maior do que a densidade do líquido porque há pouco espaço entre as partículas do sólido. A densidade tem relação inversa com o volume de uma substância, se uma substância ocupa mais espaço então sua densidade é menor, enquanto se a substância ocupa menos espaço então tem maior densidade. As substâncias sólidas ocupam menos espaço em comparação com as substâncias líquidas, então podemos dizer que a densidade do sólido é maior do que as substâncias líquidas.

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Calculate the molarity (M) of a solution containing 49.0 grams of H3PO4 in 500 mL of solution.
vlada-n [284]

Answer

The molarity (M) of the H3PO4 solution = 1.0 M

Explanation

Given:

Mass of H3PO4 = 49.0 grams

Volume of the solution = 500 mL = 500/1000 = 0.5 L

What to find:

The molarity (M) of the H3PO4 solution.

Step-by-step solution:

Step 1: Convert 49.0 grams H3PO4 to moles using the mole formula.

Mole=\frac{Mass}{Molar\text{ }mass}

The molar mass of H3PO4 = 97.994 g/mol

So,

Mole=\frac{49.0\text{ }g}{97.994\text{ }g\text{/}mol}=0.50\text{ }mol

Step 2: Calculate the molarity of the solution using the molarity formula.

Molarity=\frac{Mole}{Volume\text{ }in\text{ }L}

Putting mole = 0.50 mol and volume = 0.50L into the formula, we have;

Molarity=\frac{0.50mol}{0.50L}=1.0\text{ }M

The molarity (M) of the H3PO4 solution = 1.0 M

5 0
1 year ago
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