Based upon the following equation: P4 + 5 O2 - - > 2 P2O5 How many grams of P4 (molar mass 124 g = 1 mole) are necessary to react with 6.8 grams of O2 (molar mass 32 g = 1 mole) ?

How much energy (heat) is required to convert 52.0 g of ice at - 10.0°C to steam at 100°C? Specific heat of ice 2.09 J/g • °C Specific heat of water 4.18 J/g • °C Specific heat of steam 1.84 J/g • °C Molar heat of fusion 6.

The size of a rocket's cargo determines the amount of thrust the engine must create to carry the rocket into outer space. What is another term for this "cargo"? A. Lift B. Satellite C. Mass D. Payload

The pressure within a 5.75L balloon is 2.00 atm. If the volume of the balloon increases to 8.45L, what will the final pressure within the balloon be if the temperature does not change?

In another universe the electrons are described by four quantum numbers p, q, r, and s. The rules for these quantum numbers are as follows. • p = 1, 2, 3, 4, 5, ...

Why is fusion nuclear energy currently not widely used as a source of electricity? Fusion reactions have not yet been achieved. Fusion reactions cannot be controlled. Fusion reactions require very high temperatures and pressure.

A graduated cylinder is filled to the 40.00-mL mark with a mineral oil. The masses of the cylinder before and after the addition of the mineral oil are 124.966 g and 159.446 g, respectively. In a separate experiment, a metal ball bearing of mass 18.

Which element in Group 15 has the greatest metallic character? 1) N 2) P 3) Sb 4) Bi

Choose the statement below that is TRUE. A solution will form between two substances if solute-solvent interactions are of comparable strength to the solute-solute and solvent-solvent interactions.

When liquid silver nitrate and liquid sodium chloride are combined, solid silver chloride forms along with a new liquid, sodium nitrate. Witch substance represents the precipitate? Silver nitrate silver chloride sodium chloride sodium nitrate

The summer season at Arica and Rio de Janeiro Occurs from approximately