Answer:
0.75 mol
Explanation:
Given data:
Number of moles of Na = 0.75 mol
Mass of water = 500 g
Moles of hydrogen gas produced = ?
Solution:
Chemical equation:
Na + H₂O → NaO + H₂
Number of moles of water:
Number of moles = mass/molar mass
Number of moles = 500 g/ 18 g/mol
Number of moles = 27.8 mol
now we will compare the moles of hydrogen gas with both reactant.
Na : H₂
1 : 1
0.75 : 0.75
H₂O : H₂
1 : 1
27.8 : 27.8
sodium will act as limiting reactant it produced small number of moles of hydrogen gas as compared to water.
Thus, number of moles of hydrogen gas are 0.75 mol.
Answer:
more acidic
Explanation:
The closer to 0 the more acidic a solution.
- Hope that helps! Please let me know if you need further explanation.
Answer/Explanation:
This electrical energy now travels through the phone supplying the phone with electricity. Batteries in a cell phone supply chemical energy to electric charges. The electric charges use the energy to be put into motion.
Molar mass sucrose ( C12H22O11 ) = 342 g/mol
8.0 g of O2 <span>is the limiting factor of the reaction reagent
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C12H22O11 + 12 O2 ------------> 12 CO2 + 11 H2O
1 mol C12H22O11 ------------- 342 g
x mol C12H22O11 ------------- 10 g
x = 10 / 342
x = 0,029 mol of sucrose
answer A