Answer:
Effect of Impurities on Freezing Point When impurities are added to a substance, it would lower its freezing point
Effect of Impurities on Boiling Point will raise the boiling point
Fe2(SO4)3.3H2O = 56*2 + 3*(32+16*4)+3*(1*2+16) = 454 g/mol
Mol =m/M = 10.5/454 = 0.023 mol
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Answer:
2.00 g of ethanol
Explanation:
The density of the mixture is the total mass (ethanol + chloroform) divided by the total volume. Let's call the mass of ethanol as x, the volume of it as V1, and the volume of chloroform as V2.
V2 = mass of chlorofrom/density
V2 = 5/1.5 = 3.33
x = density*volume
x = 0.8*V1
The density of the mixture will be:
(x + 5)/(V1 + V2) = 1.2
(0.8*V1 + 5)/(V1 + 5/1.5) = 1.2
0.8V1 + 5 = 1.2V1 + 4
0.4V1 = 1
V1 = 2.5 cm³
x = 0.8*2.5
x = 2.00 g
Answer:
Explanation:
The substances that are present at the beginning are called reactants and the substances present at the end are called products. Sometimes when reactants are put into a reaction vessel, a reaction will take place to produce products. Reactants are the starting materials, that is, whatever we have as our initial ingredients.Oxygen, a colorless, odorless, tasteless gas essential to living organisms, being taken up by animals, which convert it to carbon dioxide; plants, in turn, utilize carbon dioxide as a source of carbon and return the oxygen to the atmosphere. Oxygen forms compounds by reaction with practically any other element.
He was an american engineer, and he populized molecular nanotechnology