The molar concentration of the nitric acid solution was 0.6666 mol/L.
<em>Balanced equation</em>: KOH + HNO_3 → KNO_3 + H_2O
<em>Moles of KOH</em>: 32.33 mL KOH × (1.031 mmol KOH /1 mL KOH)
= 33.33 mmol KOH
<em>Moles of HNO_3</em>: 33.33 mmol KOH× (1 mmol HNO_3/1 mmol KOH)
= 33.33 mmol HNO_3
<em>Concentration of KOH</em>: <em>c </em>= "moles"/"litres" = 33.33 mmol/50.00 mL
= 0.6666 mol/L
Answer: C. Al (aluminum)
Explanation: it has 3 valence electrons :)
This indicates that the molecules and attractive force of glycerol is stronger then that of water
Answer:
5.22 moles of Na₂CO₃ have mass of 553.22 g
Explanation:
Given data:
Mass of Na₂CO₃ = ?
Number of moles of Na₂CO₃ = 5.22 mol
Solution:
Formula:
Mass = number of moles × molar mass
Molar mass of Na₂CO₃ = 105.98 g/mol
Mass = 5.22 mol × 105.98 g/mol
Mass = 553.22 g
Thus, 5.22 moles of Na₂CO₃ have mass of 553.22 g.