Answer:
292.4 g
Explanation:
- 2Al + 3H₂SO₄ → 3H₂ + Al₂(SO₄)₃
First we <u>convert 53.7 g of Al into moles</u>, using its<em> molar mass</em>:
- 53.7 g ÷ 27 g/mol = 1.99 mol Al
Then we <u>convert Al moles into H₂SO₄ moles</u>, using the <em>stoichiometric coefficients</em>:
- 1.99 mol Al * = 2.98 mol H₂SO₄
Finally we <u>convert 2.98 moles of sulfuric acid into gram</u>s, using its <em>molar mass:</em>
- 2.98 mol H₂SO₄ * 98 g/mol = 292.4 g
That would result in an exothermic reaction.
Hope this helps :)
Answer:
380g
Explanation:
Given parameters:
Number of moles of Fluorine = 20moles
Unknown:
Mass of Fluorine = ?
Solution:
The number of moles is the unit of quantifying the amount of particles in a substance.
So;
Mass of a substance = number of moles x molar mass
Molar mass of F = 19g/mol
Now;
Mass of F = 20 x 19 = 380g
Answer:
Explanation:
<em>Given: </em>
P1 = 78.89 ATM
V1 = 12 litres
T1 = 70° C= 343.15 K
V2 = 10 litres
T2 = 95°C= 368.15 K
<em>To find:</em>
P2 = ?
<em>Solution:</em>
Using ideal gas equation,
Since the number of moles & Universal gas constant (R) is constant, the final relation that would be derived between initial & final variables.
<em>(The only unit conversion needed is temperature because it was an addition factor, for other variables it will be cancelled out) </em>