Answer:
27.9 g
Explanation:
CsF + XeF₆ → CsXeF₇
First we <u>convert 73.1 g of cesium xenon heptafluoride (CsXeF₇) into moles</u>, using its<em> molar mass</em>:
- Molar mass of CsXeF₇ = 397.193 g/mol
- 73.1 g CsXeF₇ ÷ 397.193 g/mol = 0.184 mol CsXeF₇
As <em>1 mol of cesium fluoride (CsF) produces 1 mol of CsXeF₇</em>, in order to produce 0.184 moles of CsXeF₇ we would need 0.184 moles of CsF.
Now we <u>convert 0.184 moles of CsF to moles</u>, using the <em>molar mass of CsF</em>:
- Molar mass of CsF = 151.9 g/mol
- 0.184 mol * 151.9 g/mol = 27.9 g
Explanation:
Oceans can influence weather and climate. For example, cities located near large water bodies like oceans tend not to have extreme climates
The correct answer should be D :)
Answer:
1.08 m is the molality of the solution.
Explanation:
1st step: Determine the mass of solvent.
13% by mass means that 13 g are contained in 100 g of solution.
Solution mass = Solute mass + solvent mass
100 g = 13 g + Solvent mass
Solvent mass = 100 g - 13 g → 87 g
Second Step: Let's determine the moles of our solute mass (mass / molar mass)
13 g / 138.2 g/mol = 0.094 moles
Third step: Replace the data to determine molality.
Molality are the moles of solute in 1kg of solvent (mol/kg)
Before this, we must convert the solvent mass to kg
87 g . 1kg / 1000 g = 0.087 kg
molality → 0.094 mol / 0.087 kg = 1.08 m
