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octane gas reacts wuth oxygen to form carbon dioxide gas and water as a gas. write balanced equation. how many grams of oxygen must react with 50 grams of hexane gas?
Graphite is the crystalline form of carbon used in lead pencils. How many moles of carbon are there in 305 mg of graphite? (b) Manganese (Mn) is a transition element essential for the growth of bones.
Determine the molar mass of the substance if 120.0 grams of a pure sample contained 24.0 mol of the substance. Express your answer in g/mol.?
The latent heat of vaporization of water is 577 J/kg. If a person's body needs to lose 345 J of energy through sweating, how many kilograms of water in the form of sweat must be evaporated.
A solution is made by mixing 506 mL of water and 198 mL ethanol. What is the concentration of ethanol in units of volume/volume percent.
Determine the numbers of moles of S8 that are required to make 0.600 moles of SF4.
how much of heat is gained by nickel when 500 g of nickel is warmed from 22.4 to 58.4C?
To prepare 5.0 L of a 3.50 M solution of Potassium Hydroxide (KOH), how many grams of Potassium Hydroxide must be used?
In the reaction P4 + 5 O2 → 2 P2O5, how many moles of O2 are consumed each time 0.5 moles of P2O5 form?
A sample of 0.50 moles of O2 gas initially at 250K and a pressure of 1.0 atm is compressed to final pressure of 12 atm. The compression can occur via two different paths
If this energy were used to vaporize water at 100.0 degrees, how much water (in liters) could be vaporized.
If a 220 mg piece of gold (density =19.32 g/cm^3) is hammered into a sheet measuring 2.3x1.0 ft, what is the average thickness of the sheet in meters?
What is the molecular formula of a compound given the molar mass of the compound is 205.4 g/mol and the empirical formula is C3H5.
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