calculate the change in enthalpy, if the reactants have an enthalpy of 315 kj and the products have an enthalpy of 375 kj

Rewrite this to make it true: Plants use energy to carry out cellular respiration.

An acid a. has a high pH in solution. b. turns blue litmus paper to red. c. releases hydroxyl ions in solution. d. has more hydroxyl than hydrogen (or hydronium) ions.

The mole fraction of carbon dioxide in a gas mixture is. 200 there are also. 251 g of nitrogen and. 322 g of oxygen in this gas mixture what is the mass of arbon dioxide in this mixture

Bombarding plutonium-239 with an alpha particle creates an isotope of curium. Balance the equation. 239 94 Pu + 4 2 He → a b Cm + c d n Identify the values for the unknown letters. a is b is c is d is

The component which dissolves in a solution is called the ...

What causes combustion in cars?

A potassium atom (atomic number 19) and a bromine atom (atomic number 35) can form a chemical bond through a transfer of one electron. The potassium ion that forms has 18 electrons. What best describes the bromide ion that forms?

A 0.450 g0.450 g sample of impure CaCO3 (s) CaCO3 (s) is dissolved in 50.0 mL50.0 mL of 0.150 M HCl (aq) 0.150 M HCl (aq).

Define and explain bond energy.

A colorless, toxic, radioactive gas is called what