Answer:
Molarity = 2.54 mol.L⁻¹
Solution:
Molarity is the amount of solute dissolved per unit volume of solution. It is expressed as,
Molarity = Moles / Volume of Solution ----- (1)
Data Given;
Mass = 187 g
Volume = 250 mL = 0.25 L
First calculate Moles for given mass as,
Moles = Mass / M.mass
Moles = 187 g / 294.185 g.mol⁻¹
Moles = 0.6356 mol
Now, putting value of Moles and Volume in eq. 1,
Molarity = 0.6356 mol ÷ 0.25 L
Molarity = 2.54 mol.L⁻¹
Helium is not found. That is 8 molecules of carbon, 10 Hydrogen, 4 nitrogen, and 2 Oxygen. I think...Hope this helps.
Answer: Here you go
Explanation:
The general equation for an exothermic reaction is: Reactants → Products + Energy.
Volume of solution in liters:
5.00 x 10² mL / 1000 => 0.5 L
number of moles:
mass of solute / molar mass
21.1 / 119.0 => 0.1773 moles
Molarity = number of moles / volume
M = 0.1773 / 0.5
M = 0.355 mol/L
Answer C
<span>hope this helps!</span>
The french fries gives 460 kilocalories and <span>65% of those calories come from fat. Then, calorie that comes from fat would be: 65% * 460 kcal= 299 kcal
Fat gives </span>energy about 9kcal/gram. Then, the total mass of fat in the french fries would be: 299 kcal/ (9kcal/g)= 33.22 grams
