Please help I am so bad at chemistry!!

The answer to your question is below

Explanation:

Data

3.- grams of reactant

volume = 1l

a) 0.5 M NaCl

-Calculate the number of moles

moles = Molarity x volume

moles = 0.5 x 1

moles = 0.5

-Calculate the molar mass of NaCl

NaCl = 23 + 35.5 = 58.5 g

               58.5g 1 mol

                  x      0.5 mol

                   x = (0.5 x 58.5) / 1

                   x = 29.25 grams of NaCl

b)

-Calculate the moles

moles = 2 x 1

moles = 2

-Calculate the molar mass of CaCl₂

CaCl₂ = 40 + 71 = 142 g

-Calculate the grams

          142 g 1 mol

             x       2 moles

             x = (2 x 142) / 1

             x = 284 grams of CaCl₂

c) 1.5 M NaOH

-Calculate the moles of NaOH

moles = 1.5 x 1

moles = 1.5

-Calculate the molar mass of NaOH

NaOH = 23 + 16 + 1 = 40 g

-Calculate the grams

          40 g 1 mol

             x   1.5 moles

             x = (1.5 x 40)

             x = 60 grams of NaoH

4.- mass of fructose = ?

Volume = 1l

Molarity = 0.75

-Calculate the moles of fructose

moles = 0.75 x 1

moles = 0.75

-Calculate the molar mass of fructose

C₆H₁₂O₆ = (12 x 6) + (12 x 1) + (16 x 6) = 72 + 12 + 96

                                                            = 180 g

-Calculate the grams of fructose

                 180 g 1 mol

                   x      0.75 moles

                   x = (0.75 x 180) / 1

                   x = 135 g of fructose

5.- Balanced chemical reaction

           3Ba(NO₃)₂  +  Al₂(SO₄)₃   ⇒   3BaSO₄  +  2Al(NO₃)₃

-Calculate the moles of Al₂(SO₄)₃

moles = molarity x volume

moles = 0.35 x 0.025

          = 0.00875

-Use proportions to calculate the moles of Ba(NO₃)₂

                3 moles of Ba(NO₃)₂ 1 mol of Al(SO₄)₃

                 x                                0.00875 moles of Al(SO₄)₃

                                     x = (0.00875 x 3) / 1

                                     x = 0.02625

-Calculate the volume of 0.280 M solution of Ba(NO₃)₂

volume = moles / molarity

volume = 0.02625 / 0.280

volume = 0.0938 l or 93.8 ml

5.- Balanced chemical reaction

           2AgNO₃  +  CaBr₂   ⇒   2AgBr  + Ca(NO₃)₂

- Calculate the moles of CaBr₂

moles = 0.128 x 0.035 = 0.0045

- Calculate the moles of AgNO₃

         2 moles of AgNO₃ 1 mol of CaBr₂

          x                             0.0045 moles

                     x = (0.0045 x 2) /1

                     x = 0.009 moles

- Calculate the volume of AgNO₃

Volume = moles / Molarity

             = 0.009 / 0.415

             = 0.0215 l  or 21.6 ml

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >

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