Chemistry Answers

The combustion of ethane (C2H6) produces carbon dioxide and steam.

2C2H6(g)+7O2(g)⟶4CO2(g)+6H2O(g)

How many moles of CO2 are produced when 5.55 mol of ethane is burned in an excess of oxygen?

For the chemical reaction

Na2CO3+Ca(NO3)2⟶CaCO3+2NaNO3

how many moles of calcium carbonate (CaCO₃) are produced from 6.0 mol of sodium carbonate (Na₂CO₃)?

Given the reaction, how many moles of Z will be produced from 1.35 mol A, assuming excess B?

2A+3B⟶4Y+5Z

Bituminous coal is a type of coal that is composed of carbon with small amounts of hydrogen, oxygen, nitrogen, and sulfur. The formula for a sample of bituminous coal is 

C137H97O9NS. Calculate the amount of carbon in 65.0 kg of the sample.

Procedure to identify when three different

Liquid namely dilute acid, distilled water and alkaline solution are poured into three unablled bottle

One stereoisomer of 1,4-do bromo cyclone and has a melting point of 113c, the other isomer melt below 0c.draw both structure and assign melting points to the structure. Justify your choice

Assign an oxidation number to each element in the reaction.

CO(g) + 2H₂(g) → CH₃OH(g)

In CO, the oxidation number of C is , and that of O is . In H₂, the oxidation number of H is . In CH₃OH, the oxidation number of C is , that of O is , and that of H is .

how i do chemistry good?

what pieces of apparatus are needed to obtain solid lead (II) iodide from 20cm3 of aqueous lead(II) nitrate

Suppose that 0.250mol

m

o

l

 of methane, CH

4

(g)

C

H

4

(

g

)

, is reacted with 0.400 mol

m

o

l

 of fluorine, F

2

(g)

F

2

(

g

)

, forming CF

4

(g)

C

F

4

(

g

)

 and HF(g)

H

F

(

g

)

 as sole products. Assuming that the reaction occurs at constant pressure, how much heat is released?