Answer:
The indepandent variable is wether its hot or cold water, so the tempurature of the water. The dependant variable is how much sugar disolves.
Explanation:
The indepandant variable is what changes or has a direct affect on the depandant. The depandant is what is being mesured or tested.
1. Is a (primary)
2. Is 2 (c)
3. Not sure sorry ✨
4. HBr (b)
Answer:
32.6 %
Explanation:
Given data
- Mass of sucrose (solute): 22.8 grams
- Mass of water (solvent): 47.1 grams
Step 1: Calculate the mass of the solution
The mass of the solution is equal to the sum of the mass of the solute and the mass of the solvent.
m(solution) = m(solute) + m(solvent)
m(solution) = 22.8 g + 47.1 g
m(solution) = 69.9 g
Step 2: Calculate the percent-by-mass of sucrose in the solution
We will use the following expression.
Answer:
the iron alone was dark brown and rectangular, whereas the iron-sulfur combination was a dark gray powder.
0.563 is a correct value of molar fraction of chloroform.
<u>Explanation:</u>
Mole fraction is a unit of concentration, defined to be equal to the number of moles of a component divided by the total number of moles of a solution. Because it is a ratio, mole fraction is a unit less expression. The mole fraction of all components of a solution, when added together, will equal 1.
Mole fraction is another way of expressing the concentration of a solution or mixture. It is equal to the moles of one component divided by the total moles in the solution or mixture. Mole fraction is used in a variety of calculations, but most notably for calculating partial pressures.
