What if we wanted 4 moles water, how many moles of reactants would be needed

2H2+O2->2H2O

What is a boundary? Explain the possible ways plates can move.

1. The deepest that scientists have been able to drill is below the surface. A 100 kilometers B 6,000 kilometers C 3.8 kilometers D 12 kilometers

Is the bond between Hydrogen and Chlorine ionic or covalent?

How many liters of h2 gas can be produced at 0? c and 1.00 atm (stp) from 42.0 g of zn? zn (s) + 2hcl (aq) ? zncl2 (aq) + h2 (g) ?

Benzene, C6H8, has an enthalpy of fusion = 10.19 kJ/mol. Calculate the amount of energy which is needed to change 88.0 g of solid benzene at 5.53°C into liquid benzene, also at 5.53°C?

Which quantum number describes the energy level of an electron? Spin quantum number Principal quantum number Magnetic quantum number Angular momentum quantum number

Which of the following best explains why J. J Thompson's Plum Pudding model had to be revised?

What best describes the flow of electricity

What is the volume of. 04 mol of a gas at. 9 kPa and 20 degrees celsius

Magnesium has three naturally occurring isotopes with masses of 23.99 amu, 24.99 amu, and 25.98 amu and natural abundances of 78.99%, 10.00%, and 11.01%, respectively. Calculate the atomic mass of magnesium