Answer:
The answer to your question is m = 3.2
Explanation:
Molality is defined as the number of moles of a solute dissolved in a mass of solvent (kg).
Data
moles of solute = 43.6
mass of solvent = 13.5 kg
Formula
Molality = 
Substitution
Molality = 
Simplification and result
Molality = 3.2
True, they are non-metal
And it's metal, not mental XD
You have 6 carbon atoms in glucose. Multiply by 3 and you get 18.
The answer would be D, abandoning young before eggs hatched, due to the fact that the eggs would probably fail to develop correctly as a result of improper care. The other choices would actually increase their chances of survival.
The answer is 33.33 %
The explanation:
According to the reaction equation:
MgCO3(s) + 2HCl (aq) --> MgCl2(aq) + H20(l) + CO2(g)
we can see that 1 mole of MCO3 will produce → 1 mole of CO2
-Now we need o get number of mole of CO2:
and when we have 0.22 g of CO2, so number of mole = mass / molar mass
moles = 0.22 g / 44 g/mol = 0.005 mole
∴ moles of Mg = moles of CO2 = 0.005 mole
∴ mass of Mg = moles * molar mass
= 0.005 * 84 /mol = 0.42 g
∴ Percent of MgCO3 by mass of Mg = 0.42 g / 1.26 * 100
= 33.33 %
