Mole Calculation

How many molecules are in 6 mole of hydrogen sulfate?

• 6.02x10²³ FU

• 6.02x10¹³⁸ FU

• 5.90x10²⁵ FU

• 3.61x10²⁴ FU

A bag of fertiliser contains 14.52 kg of ammonium nitrate (NH₄NO₃). Calculate the number of moles of ammonium nitrate in the bag of fertiliser.

_{Give your answer to 1d.p}

How many molecules are there in 31.8 moles of water?

• 572 g

• 1.91 x 10²⁵ molecules

• 5.28x 10-²⁵ molecules

• 1.77 g

What is the mass of 0.75 moles of ammonium phosphate?

• 0.0044 g

• 91 g

• 110 g

• 74 g

Tags

NGSS.HS-PS1-7

N₂ +  3H₂ −->  2NH₃ 
How many moles of ammonia are produced when 3 moles of nitrogen react with hydrogen?

• 6 moles ammonia

• 1.5 moles ammonia

• 9 moles ammonia

• 9 moles hydrogen

Using the following equation:
Fe₂O₃(s) + 3H₂(g) → 2Fe(s) + 3H₂O(l)
How many moles of iron can be made from  6 moles H₂? 

• 4 moles Fe

• 6 moles Fe

• 9 moles Fe

• 2 moles Fe

Tags

NGSS.HS-PS1-7

Given S(s) + O₂(g) ---> SO₂(g) ΔH = -287 kJmol^-1

if you burn 16 g of sulfur (S), how many moles of sulfur was burnt

M(S) = 32 g mol^-1

Given 2SO_2(s) + O_2(g) ---> 2SO_3(g) ΔH = -99 kJmol^-1 If the amount of heat released is 445.5 kJ how many moles of Oxygen gas was needed

• 2.5

• 3.5

• 4.5

• 5.5

• More information needed

Tags

NGSS.HS-PS1-4

Given 2SO_2(s) + O_2(g) ---> 2SO_3(g) ΔH = -99 kJmol^-1 If the amount of heat released is 445.5 kJ how many grams of SO₂ was used M(SO₂) = 64.0 g mol^-1

• 28.8 g

• 288 g

• 2880 g

• More information needed

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

Given N_2(s) + 3H_2(g) ---> 2NH_3(g) ΔH = +1335 kJ mol^-1

How many moles of ammonia are produced of 2 moles of nitrogen was reacted ?

• 1

• 2

• 3

• 4

• 5