Use the following information to answer the next two questions:Aqueous lithium chloride, liquid dihydrogen monooxide, and gaseous sulfur dioxide are produced when hydrochloric acid is added to a solution of lithium hydrogen sulfite. Write and balance the equation and calculate how many moles of lithium hydrogen sulfite would be needed to react with 0.60 moles of hydrochloric acid. When the equation is written in the correct order and balanced, the correct coefficients are:
A. 2,3,1,3
B. 1,3,2,3
C. 3,1,2,3
D. 2,1,2,1
E. 2,1,2,3
F. 1,1,1,1

And what would the answer be?

e

f

Explanation:

1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.