What is the concentration, in g/L, of a solution containing 0.65 mol HNO3 in 150 mL solution?
Give your answer rounded to nearest whole number, followed by a space and the units.
g HNO3 = mols x molar mass = ?
That is ?g HNO3/150 mL so
?g x (1000/150) = xg HNO3/L.
How do I find the molar maass.
To find the concentration in g/L, we need to convert the moles of HNO3 to grams and then divide by the volume of the solution.
First, we need to convert the volume from milliliters (mL) to liters (L). Since 1 L is equal to 1000 mL, we divide the given volume by 1000:
150 mL ÷ 1000 = 0.15 L
Next, we need to convert the moles of HNO3 to grams. The molar mass of HNO3 can be calculated by adding the atomic masses of hydrogen (H), nitrogen (N), and oxygen (O). The atomic masses are approximately 1 g/mol for hydrogen, 14 g/mol for nitrogen, and 16 g/mol for oxygen:
HNO3: 1(1) + 1(14) + 3(16) = 1 + 14 + 48 = 63 g/mol
Now, we can calculate the mass of HNO3 in the solution by multiplying the molar mass by the number of moles:
0.65 mol HNO3 × 63 g/mol = 40.95 g
Finally, we divide the mass of HNO3 by the volume of the solution to find the concentration:
Concentration = 40.95 g ÷ 0.15 L
Using a calculator, the concentration is approximately 273 g/L.
Rounded to the nearest whole number and expressed in the correct units, the concentration is 273 g/L.