How many molecules are in 2.50 mole of H2O?

What is the smallest carbohydrate called?

Simple machines make work easier. Most simple machines reduce the amount of effort force needed to move an object. This cart has a set of wheels. The wheels are actually simple machines: the wheel and axle.

Write a balanced equation for the combustion reaction that occurs between propane and oxygen. and limiting reactant

What will be the new volume if 125 mL of He gas at 100 degree Celsius and. 979 atm is cooled to 26 degree Celsius and the pressure is increased to 1.15 atm?

You have a series of four chemical reactions (1->2->3->4). How do you calculate the triangleH2 if you know the other triangleH values? A. Triangle H2 = triangleH1 + triangleH3 - triangleH4 B. Triangle H2 = triangleH1 + triangleH3 + triangleH4 C.

Find δe for the change in state of 1.0 molh2o (l) at 79 ∘c to h2o (g) at 116 ∘c. the heat capacity of h2o (l) = 75.3 j/molk, heat capacity of h2o (g) = 25.0 j/molk, and the heat of vaporization of h2o is 40.7*103j/mol at 100 ∘c.

Balloon A started with a volume of 1.76 L. The temperature of the room the balloon was in was 295 K. The balloon was heated to a temperature of 253.15 K. What is the new volume?

The standard internal energy change for a reaction can be symbolized as ΔU°rxn or ΔE°rxn. For the following reaction equations, calculate the energy change of the reaction at 25 °C and 1.00 bar. Sn (s) + Cl2 (g) - - - > SnCl4 (l) + H (KJmol) - 511.3.

You transfer a sample of a gas at 17°C from a volume of 5.67 L and 1.10 atm to a container at 37°C that has a pressure of 1.10 atm. What is the new volume of the gas?

What is true about the energy involved in a chemical reaction? A. The amount of energy is constant, but it is converted from one form to another. B. The amount of energy decreases as it is converted from one form to another. C.