Answer:
I think you can predict it by the number of protons in it.
The answer is A because I did this before
Answer: In a fractional distillation, a mixture of liquids is boiled and the resulting vapors travel up a glass tube called a “fractionating column” and separate. The fractionating column is placed between the flask containing the mixture and the “Y” adaptor and improves the separation between the liquids being distilled.
Explanation:
<span>Baking a cake is an example of making something where the ingredients must be in fixed ratios. Recipes call for specific ratios of ingredients in order to cook properly, and when a recipe for a cake is modified to feed greater or fewer people the ratio remains the same as the original recipe.</span>
Answer:
molecular formula = MgSO4.7H2O
Name is Magnesium sulfate heptahydrate
Explanation:
A hydrate of magnesium sulfate has a mass of 13.52 g. This sample is heated until no water remains. The MgSO4 anhydrate has a mass of 6.60 g. Find the formula and name of the hydrate.
given
mass 1 = 13.52 g
mass 2 = 6.60 g
solution
MgSO4 × H2O
first we ge here mass of hydrate part that is here
mass of hydrate part = (13.52 g - 6.60 g)
mass of hydrate part = 6.92 g
and
now we get here percentage of hydrate that is
percentage of hydrate = (6.92 / 13.52) x 100
percentage of hydrate = 51.18 %
so molar mass will be
molar mass of hydrate MgSO4 = 120.366 g/mol = 49.82 %
and for 100% = 241.6 g
so
mass of H2O = 121.23 g
and
moles of H2O = 7
so we can say that molecular formula will be MgSO4.7H2O
and name is Magnesium sulfate heptahydrate