3 years ago

How many kg are in 10 pounds

Chemistry

1 answer:

Ann [662]3 years ago

6 0

Answer:4.536 kilograms

Explanation:

for an approximate result, divide the mass value by 2.205

You might be interested in

When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 16.8g of carbon were burned in the presence of

Mrrafil [7]

61.6 grams of carbon dioxide was produced

4 0

3 years ago

When should you read the label on a chemical container?

atroni [7]

Always. You never know what kind of chemical you’re dealing with and how powerful it is.

6 0

3 years ago

What percentage of the mass of hydrofluoric acid (HF) is contributed by hydrogen?

Morgarella [4.7K]

This problem is asking for the percent by mass of hydrogen in hydrofluoric acid. At the end, the answer turns out to be D. 5% as shown below:

<h3>Percent compositions:</h3>

In chemistry, percent compositions are used for us to know the relative amount of a specific element in a compound. In order to do so for hydrogen, we use the following formula, which can also be applied to any other element in a given compound:

$\% H=\frac{m_H*1}{M_{HF}}*100\%$

Where $m_H$ stands for the atomic mass of hydrogen and $M_{HF}$ for the molar mass of hydrofluoric acid. In such a way, we plug in the atomic masses of hydrogen (1.01 g/mol) and fluorine (19.0 g/mol) to obtain: