Make up a mixture.

Example is water and sand, it is blended together but not chemically. It is by physical combination of just addition of the two substances.

But if it elements are chemically combined a compound would be formed.

5 0

3 years ago

A gas is produced when 25 g of substance X is mixed into 60 g of solution Z in a beaker. The mass of the solution in the beaker

Zepler [3.9K]

mass of the gas = 10 g

<h3>Further explanation</h3>

<em>The law of conservation of mass :</em>

<em>In a closed / isolated system, the total mass of the substance before the reaction will be equal to the total mass of the reaction product.</em>

Reaction

$\tt X+Z\rightarrow gas+solution$

mass before reaction=mass after reaction

$\tt 25+60=gas+75\\\\gas=25+60-75=10~g$

5 0

3 years ago

Electrical resistance is measured with ______________

steposvetlana [31]

Electrical resistance is measured by units of ohms.

3 0

4 years ago