Water requires 40.65 kJ of heat per mole to vaporize it completely
Multiply this by the number of moles you have
40.65 kJ x 3.3 moles = 134.145 kJ
Hope I helped you out!
Answer: D.) 25.9%
Explanation:
Dinitrogen pentoxide chemical formular : N2O5
Calculating the molar mass of N2O5
Atomic mass of nitrogen(N) = 14
Atomic mass of oxygen(O) = 16
Therefore molar mass :
N2O5 = (2 × 14) + (5 × 16) = 28 + 80 = 108g/mol
Percentage amount of elements in N205:
NITROGEN (N) :
(Mass of nitrogen / molar mass of N2O5) × 100%
MASS OF NITROGEN = (N2) = 2 × 14 = 28
PERCENT OF NITROGEN : (28/108) × 100%
0.259259 × 100%
= 25.925%
= 25.9%
Answer:
The molar mass of CO2 = 44.01 g/mol
Explanation:
Start with 2.09 moles of HCl and convert to moles of CO2 For every 2 moles of HCl used, 1 mole of CO2 is formed.
2.09 mol HCl •(1 mol CO2/2 mol HCl) = 1.045 mol CO2
Now convert moles of CO2 to grams using the molar mass.
1.045 mol CO2 • 44.01 g/mol = 45.99 grams CO2
3 significant figures = 46.0 grams CO2
Hope This Helped
<span>A polymer forms because the hydrocarbon joins with itself in a polymerization reaction.
I really hope this helps! :D</span>
Answer:
The correct answer is Magnesium (Mg)
