Household ammonia contains 0.85 g of NH3 in each 100. mL of solution.
What is the molarity of the ammonia solution?
(atomic masses: N = 14.01, H = 1.008)
M=moles/volumeinL=(.85/17)/.1
= .85/1.7= you do it.
In liquid NH3 Agcl +Ba(No3)2 produce
To find the molarity of the ammonia solution, we need to calculate the number of moles of NH3 present in the solution.
First, we can calculate the number of moles of NH3 in 0.85 g using the molar mass of NH3.
Molar mass of NH3 (molecular weight):
N = 14.01 g/mol
H = 1.008 g/mol
1 mole of NH3 = 14.01 g + 3(1.008 g) = 17.04 g
Now, we can calculate the number of moles of NH3:
moles of NH3 = (0.85 g) / (17.04 g/mol) = 0.04991 mol
Next, we need to determine the volume of the solution in liters.
Since 1 mL = 0.001 L, the volume of the solution is:
volume of solution = 100 mL × (0.001 L/mL) = 0.1 L
Finally, we can calculate the molarity of the ammonia solution.
Molarity (M) is defined as moles per liter of solution, so:
Molarity = moles of solute / volume of solution in liters
Molarity of the ammonia solution = (0.04991 mol) / (0.1 L) = 0.4991 M
Therefore, the molarity of the ammonia solution is 0.4991 M.
To find the molarity of the ammonia solution, we need to first calculate the number of moles of NH3 in the solution.
The given information tells us that there is 0.85 g of NH3 in each 100 mL of solution.
Step 1: Convert grams to moles
We can use the molar mass of NH3 to convert grams to moles. The molar mass of ammonia (NH3) is calculated by adding the atomic masses of each element: N (14.01 g/mol) and H (1.008 g/mol).
Molar mass of NH3 = 14.01 + 3 * 1.008 = 17.03 g/mol.
Now we can calculate the number of moles of NH3 in the solution:
moles of NH3 = (0.85 g) / (17.03 g/mol) = 0.0499 mol (rounded to 4 significant figures).
Step 2: Convert milliliters to liters
The molarity of a solution is defined as the number of moles of solute per liter of solution. Therefore, we need to convert the volume from milliliters to liters.
100 mL = 100/1000 = 0.1 L.
Step 3: Calculate molarity
Now, we can calculate the molarity of the ammonia solution by dividing the moles of NH3 by the volume in liters:
Molarity = moles of NH3 / volume of solution in liters
Molarity = 0.0499 mol / 0.1 L = 0.499 M.
Therefore, the molarity of the ammonia solution is 0.499 M.