<h3>step by step explanation</h3>
simple distillation can be used when the temperature difference between the boiling points of two miscible liquid is at least 25°c. the temperature difference between the boiling points of kerosene and petrol is 25c. hence, this mixture can separated using simple distillation.
<h3>answer:</h3>
simple distillation
Answer:
80.8 g
Explanation:
First, let's write a balanced equation of this reaction
MgO + 2HNO₃ → Mg(NO₃)₂ + H₂O
Now let's convert grams to moles
We gotta find the weight of MgO
24 + 16 = 40 g/mol
12/40 = 0.3 moles of MgO
We can use this to find out how much Magnesium Nitrate will be formed
0.3 x 1 MgO / 1 Mg(NO₃)₂ = 0.3 moles of Magnesium Nitrate formed
Convert moles to grams
Find the weight of Mg(NO₃)₂ but don't forget that 2 subscript acts as a multiplier of whatever is inside that parenthesis.
24 + 14 x 2 + 16 x 3 x 2 = 148 g/mol
148 x 0.3 = 80.8 g
I’m preeeeetty sure that it’s A
Answer:
29.0 g
Explanation:
We know that we will need a chemical equation with masses and molar masses, so let’s start by gathering all the information in one place.
: 63.55 46.01
Cu + 4HNO₃ ⟶ Cu(NO₃)₂ + 2NO₂ + 2H₂O
Mass/g: 20.0
1. Use the molar mass of Cu to calculate the moles of Cu.
2. Use the molar ratio of NO₂:Cu to calculate the moles of NO₂.
3. Use the molar mass of NO₂ to calculate the mass of NO2.