An insulated calorimeter contains 100 g of water at 10 °C. A salt is added to the solution, causing the temperature to drop by 3 °C. Is the heat of solution for the salt endothermic or exothermic?

Write the balanced net ionic equation for a solution formed from CaCl2 (aq) and Na2SO4 (aq)

Ions of the elements oxygen (O), sulfur (S), and selenium (Se) usually have charges of 2-. Ions of the elements fluorine (F), chlorine (Cl), and bromine (Br) usually have charges of 1-. This demonstrates that

Which of the statement about this equation is incorrect? 3H2 + N2 - > 2NH3 a) 34 g reactant - > 34 g product b) 3 moles H2 + 1 mole N2 - > 2 moles NH3 c) 3 grams H2 + 1 gram N2 - > 2 grams NH3 d) 3 molecules H2 + 1 moleculee N2 - > 2 molecules NH3

Are kilograms heavy?

A chemical property is determined by the following:

Copper and silver are examples that will form what bond

How many moles of barium hydroxide, Ba (OH2), would be required to react with 117 g hydrogen bromide, HBr?

Which carbon compound is soft, slippery, a decent electricity conductor, and bonded in a way that forms planes? coal petroleum graphite

Which of the following describes chemical properties

What's nuclear decay