Answer:
15.9 mol/kg is the molality for the solution
Explanation:
36.71% means that 36.71 g of solute are contained in 100g of solution
36.71 g → mass of solute
100 g → mass of solution (mass of solute + mass of solvent)
Mass of solvent → 100 g - 36.71 g = 63.29 g
Molality → moles of solute in 1kg of solent
We convert the mass of solute to mol → 36.71 g . 1mol/36.45 g =1.007 mol
We convert the mass of solvent from g to kg → 63.29 g . 1kg/1000g = 0.06329 kg
1.007 mol /0.06329 kg → molality → 15.9 m
Explanation:
•1:2:1 is the correct ratio of carbon to hydrogen to oxygen in glucose
In an atom, the nucleus is composed of positive charged particles called protons and neutrons that have zero charge. Most of the mass of the atom is in the nucleus. The atom is surrounded by orbits of electrons that are mobile and are negatively charged.
Adding decimals has steps to follow not like the whole number when adding, you can add it straight.
Given:
3.089 g and 0.074 52 g
The first step arranged the numbers and second lined up the decimal points when writing down and then simply add the numbers that lined up in the decimals points.
3.089
+ 0.07452
3 .16352
so, you can easily get the answer 3.16352 g.