15 cm3 of a gaseous hydrocarbon requires 90 cm3 of oxygen for complete combustion, both volumes being measured at 15C and 1 atm. The formula of the hydrocarbon is A C4H6
B C4H8
C C4H10
D impossible to calculate without knowing the molar volume of gases under these conditions.

Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.1.) balance the equation: - alo3(s)+naoh(l)+hf(> na3alf6+h2o(g). 2.) if 17.5 kilograms of al2o3(s), 51.4 kilograms of naoh(l), and 51.4 kilograms of hf(g) react completely, how many kilograms of cryolite will be produced? 3.)which reactants will be in excess, (al2o3, naoh, or hf) 4.)what is the total mass of the excess reactants left over after the reaction is complete in kg?

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years

K12 chemistry unit assessment: chemical bonding, electrostatic forces in ionic bonds hold which of the following together? 1. he atoms in helium gas 2.na+ and br- in nabr 3. fe atoms and localized electrons in iron