How hydrogen is usually obtained in the laboratory?

9.03g of magnesium combine completely with 4.30g of nitrogen

Which equations can be used to solve for acceleration? Check all that apply. t = delta v over a. vf = at - vi a = d over t. vi = vf - at v = a over t. vf = at + vi a = delta v over t.

What is not the same as 0.953 kilograms

The various atomic masses of the same element are called a. neutrino b. positron c. critical mass d. isotopes

Why is it important for us to study outer space?

What is the pressure of 0.500 moles of carbon dioxide gas in a 2.5 L tank and at a temperature of 301 K? (R=0.0821 L·atm/mol·K

If there is a 50kg block on earth, then what is the blocks weight?

Which element has the most electrons in is highest energy level? A. Carbon B. Iron C. Bromine D. Calcium

MnO2 + 4 HCl → Cl2 + MnCl2 + 2 H2O Given 145.7 grams of MnO2, how much hydrochloric acid (HCl) is needed to use up the MnO2 completely (MM in g/mol: MnO2=86.94, HCl = 36.46, Cl2=70.9, MnCl2=125.84, H2O=18.02) ? 244.4 g 10.55 g 145.5 g 1407 g

The heat of vaporization of water at 100°C is 40.66 kJ/mol. Calculate the quantity of heat that is absorbed/released when a. 8.00 g of steam condenses to liquid water at 100°C. b. 18.1 kJ of heat are absorbed. c. 91.6 kJ of heat are released. d. 91.