What is the density of an unknown metal that has the mass of 158 g and volume of 20 ml. use table 4 to identify this metal

The density of the unknown metal is 7.9g/mL and the unknown metal is iron.

HOW TO CALCULATE DENSITY OF A SUBSTANCE:

Density (g/mL) = mass (g) ÷ volume (L)

Density = 158g ÷ 20mL

Density = 7.9g/mL

Therefore, the density of the unknown metal is 7.9g/mL

The unknown metal is IRON

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a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.

12 is it do you think so