Calculate the mass of 1.23*1024 helium atoms.

Industrially, vanadium metal, which is used in steel alloys, can be obtained by reacting vanadium (V) oxide with calcium at high temperatures: 5Ca + V2O5 longrightarrow 5CaO + 2V In one process, 1.540 * 103 g of V2O5 react with 1.960 * 103 g Ca.

What was the action between the 2 atoms in an ionically bonded compound that caused that ionic bond to form in the first place?

Read the given equation. Na2O2 + CO2 → Na2CO3 + O2 What volume of O2 gas is produced from 2.80 liters of CO2 at STP?

Identify the following as an example of a physical or chemical. Olive oil, vinegar, salt, and pepper are shaken together together to make salad dressing

At high pressures, real gases do not behave ideally. calculate the pressure exerted by 18.0 g h2 at 20.0°c in a 1.00 l container assuming in part 1 non-ideal behavior and in part 2 ideal behavior.

Determine the precent composition of the following compounds: a) iron (II) hydroxide b) iron (II) oxide

Copper is plated onto the cathode of an electrolytic cell containing CuCl2 (aq). How long does it take to plate 145 mg of copper with a current of 3.6 A

All of the following require breaking and forming chemical bonds except rusting a nail smashing a rock baking a cake burning wood

Which changes increase the rate of reaction between calcium hydrochloric acid? carbonate and dilute 1 2 3 increasing the concentration of the acid increasing the temperature increasing the size of the pieces of calcium carbonate

In science, what is process text?