Solution:
Molality:-It is a measure of the concentration of a solute in a solution in terms of amount of substance in a specified amount of mass of the solvent
Therefore,
Molality = moles solute / kg solvent
Therefore kg solvent = moles solute / molality
moles solute = mass / molar mass
= 25.31 g / 101.1 g/mole
= 0.2503 mole
kg solvent = 0.2503 mole / 0.1982 m
= 1.263 kg
= 1263 g
This is the required answer.
Answer:
5.73 Liters
Explanation:
Pressure decreases => Volume increases (Boyles Law)
V(final) = 2.75L (750Torr/360Torr) = 5.73 Liters
The only food that provides all the nutrients that humans need is human milk," Hattner said. "Mother's milk is a complete food. We may add some solid foods to an infant's diet in the first year of life to provide more iron and other nutrients, but there is a little bit of everything in human milk.
Answer:
Second option
Explanation:
We started using fossil fuels which are the main cause of climate change
The answer for this multiple choice question is C