Image Transcriptionclose. Question 77 of 00 How many moles of aluminum are required to completely react with 107 ml of 6.00 M H,S0, according to the balanced chemical reaction 2 Al(s) 3 H,SO.(ag)- Al(so.)(aq) 3 H,(a)
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- How many moles of NaCl are in 325 mL of 0.25 M NaCl solution? Solution: We first convert mL to L, and then apply molarity as a conversion factor. 325 mL× 1 L 103 mL × 0.25 moles NaCl 1 L = 0.081 mol NaCl Example 2 How many mL of 5.0 M HCl contains 0.15 moles of HCl? Solution: Our known quantities are moles of HCl and molarity.
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Weigh 15 g of sodium propionate into a 250-mL beaker. Dissolve the salt in 60 mL of tap water. Add 30 mL 6 M HCl and stir the mixture with a glass rod. Add 12 g solid NaCl to the solution and stir the mixture for about 2 minutes. (This is known as "salting out".
- 4.68 x 10^9 m^3 x 1000000 cm^3 1 m^3 4.68 x 10^9 m^3 = 4.68 x 10^15 cm^3 What do we need to find out? The volume of Lake Eufaula. The volume of an amount of M&M's, which would give us the volume of one m&m. Since we had to convert 1 M&M to the amount it would be in cm^3, we must
A solution of NaCl (molar mass = 58.44 g/mole) with molarity = 1.25 M has a density of 1.08 g/mL. What is its molality? One Liter of solution contains 1.25 mole of NaCl A solution of sucrose (molar mass = 342.3 g/mole) has density 1.10 g/mL and a molality of 0.880 m.
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molar mass = mass / moles. Which we can rewrite to To convert the VOLUME (measured in ml) of a substance to its MASS (measured in kg) you need to multiply by its density (in kg/ml).
- 5.11 M 2) 1.2 moles of calcium carbonate in 1.22 liters of water. 0.98 M 3) 0.09 moles of sodium sulfate in 12 mL of water. 7.5 M 4) 0.75 moles of lithium fluoride in 65 mL of water. 11.5 M 5) 0.8 moles of magnesium acetate in 5 liters of water. 0.16 M 6) 120 grams of calcium nitrite in 240 mL of water. 3.79 M
3) 0.09 moles of sodium sulfate in 12 mL of water. You should tell how many grams of the substance you need to make the solution, not how many moles.
- 11. Calculate the molarity of the resulting solution if enough water is added to 50.0 mL of 4.20 M NaCl solution to make a new solution with a volume of 2.80 L. a) 0.0750 M b) 0.067 M c) 0.043 M d) 0.034 M. 12. How many grams of KOH are contained in 400.0 mL of 0.250 M KOH solution? a) 12.4 g b) 5.61 g c) 8.98 g d) 18.4 g. 13. What volume of 0 ...
The mole may also be used to measure the amount of atoms, ions, electrons, or other entities. The concentration of a solution is commonly expressed by its molarity, defined as the amount of dissolved substance in mole(s) per unit volume of solution, for which the unit typically used is moles per litre (mol/l), commonly abbreviated M.