Answer:
118.05 grams
Explanation:
mL = cm³
Density = mass/volume
Let x = mass
Our equation will look like this: x/15 = 7.87
Multiply both sides by 15 to isolate the variable, x
15(x/15) = 15(7.87)
15x/15 = 118.05
x = 118.05
I believe an abbreviation for an elements name which is what you may be asking for is its chemical symbol, observed on the periodic table of elements.
Answer:
Molarity of the solution = 3.000 M
Volume of the solution = 250.0 mL = 0.25 L
moles in 250.0 mL = molarity x volume of the solution
= 3.000 M x 0.25 L
= 0.75 mol
Hence, 0.75 mol of NaCl is needed to prepare 250.0 mL of 3.000 M NaCl solution.
Moles (mol) = mass (g) / molar mass (g/mol)
Moles of NaCl in 250.0 mL = 0.75 mol
Molar mass of NaCl = 58.44 g/mol
Mass of NaCl in 250.0 mL = Moles x Molar mass
= 0.75 mol x 58.44 g/mol
= 43.83 g
Hence, 43.83 g of NaCl is needed to prepare 250.0 mL of 3.000 M solution.
Explanation:
Answer:
The anwer is not D the anwer is A
Explanation:
The Mesosphere, like the troposphere layer, has a decrease in temperature with altitude because of the decreases in the density of the air molecules. Thermosphere: As the altitude increases, the air temperature increases.
