What is the density of an object with a mass of 145.8g and an volume of 91.75 mL?

Explanation:

Density of a substance can be found by using the formula

From the question

mass = 145.8 g

volume = 91.75 mL

Substitute the values into the above formula and solve for the Density

That's

= 1.5891

We have the final answer as

Density = 1.6 g/mL

Hope this helps you

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.

the correct answer is:

a. formation of precipitation