Formula

Question 1

Find out the formula mass of H(2)SO(4)
Given the masses
H=1
S=32
O=16

Answer 1

(2x1) + 32 + (16x4) = 98

Question 2

What is moles

Answer 2

• an animal
• a weird brown bump
• the number of particles in a given amount of substance

Question 3

Whats the equation using moles , formula mass and mass

Answer 3

Moles x formula mass

Question 4

Whats emma

Answer 4

E- equation
M- formula mass
M- mole ratio
A- answer

Question 5

what is empirical formula ?

Answer 5

The simplest whole number ratio of elements in a molecule

Question 6

Empirical question :

I have 10g of hydrocarbon that contains 8g of carbon - whats the empirical formula

Answer 6

1) mass of hydrogen - 10-8=2 2g of h
2)find moles of each by dividing mass of element present by atomic mass
Carbon= 8/12=0.67 Hydrogen = 2/1=2
3)divide each by the smaller number
0.67/0.67 =1 and 2/0.67= 3
4) ratio is 1:3

Question 7

What is molecular formula ?

Answer 7

The actual number of molecules in a compound
Eg - the empirical formula of a hydrocarbon is CH(2) and its molecular mass is 42.
So 42/14=3
Meaning the molecular formula = 3 x CH(2) = C(3)H(6)

Question 8

What is percentage yield ?

Answer 8

Actual amount of product produced
————————————–x100
Theoretical amount

Question 9

What are the state symbols

Answer 9

(G) (l) (s) (aq)