Use the equation below to answer the following two questions.
2C2H6 + 7O2 ---> 4CO2 + 6H2O
8. How many moles H2O are produced when 94.5 moles C2H6 decomposes completely?
a. 185.3 moles
b. 267.5 moles
c. 31.5 moles
d. 283.5 moles

9. How many grams C2H6 are needed to completely react with 42 grams O2?
a. 11.1 grams
b. 137.55 grams
c. 0.37 grams
d. 142.08 grams

Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural.question 2 reflects a moral or social value.question 3 refers to something that can be measured.question 4 reflects a question that can’t be observed.

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?

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?