What is the molarity of 750 mL of NaCl solution that contains 21.04 g of NaCl?
The Periodic Table
A. 0.028 mol/L
B. 0.48 mol/L
C. 28 mol/L
D. 4.8 x 10-4 mol/L

volume of solution = 750 mL = 0.750 L

mass of solute = 21.04 g

solute: NaCl

molarity

Step 1: Calculate the molar mass of solute.

molar mass of solute = (22.99 g/mol × 1) + (35.45 g/mol × 1)

molar mass of solute = 58.44 g/mol

Step 2: Calculate the number of moles of solute.

moles of solute = mass of solute / molar mass of solute

moles of solute = 21.04 g / 58.44 g/mol

moles of solute = 0.360027 mol

Step 3: Calculate the molarity.

molarity = moles of solute / volume of solution

molarity = 0.360027 mol / 0.750 L

molarity = 0.48 mol/L

B. 0.48 mol/L

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1.consider the following balanced equation and answer parts a through. show calculations for each part.  

3 ag(s) + 4 hno3(aq) → 3 agno3(aq) + no(g) + 2 h2o(l)  

a. calculate the number of moles of agno3 produced by the reaction of 3 moles of ag with excess hno3. if the number to the left of the compound represents the number of moles of the compound which are present, then 3 moles of ag react with 4 moles hno3 to produce 3 moles agno3 (aq).

so the answer to a would be 3 moles.

b. calculate the number of moles of agno3 produced by the reaction of 108 grams of ag with excess hno3.  

i'm not sure how to plug in the grams of silver into an equation using moles to find how many moles are produced.

c. calculate the number of grams of agno3 produced by the reaction of 108 grams of ag with excess hno3  

d. calculate the number of moles of no produced as a byproduct of the reaction of 108 grams of ag with excess hno3.  

e. calculate the number of grams of no produced as a byproduct starting with 108 grams of ag and excess hno3.  

explanation:

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.