Use the mass and volume data to calculate the density of an unknown metal to the nearest hundredth mass of unknown metal = 222.50g volume of unknown metal = 25.00cm3 what is the density of the unknown metal

D=8900g/L

Explanation:

Density is mass/volume. Mass in in grams and volume is in liters.

1 cm³=1 mL

With this conversion, we can convert cm³ to L.

When we convert, we cancel out cm³ and mL to get L alone. The density is 8900 g/L.

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.