Chemistry

Acids and Bases

Molarity = moles of solute/Liters of solution ( 300 ml = 0.300 Liters ) For our purposes, Moles of solute = Liters of solution * Molarity Moles NaCl = 0.300 Liters * 0.15 M = 0.05 moles NaCl =============

Molarity = moles of solute/Liters of solution ( get moles of HNO3 and 300 ml = 0.300 Liters ) 0.31 grams Nitric acid (1 mole HNO3/63.018 grams) = 0.004919 moles HNO3 Molarity = 0.004919 moles HNO3/0.300 Liters = 0.0164 M HNO3

dissolve 100g in 300ml water

300mL is 10.14 fluid ounces.

This question has no meaning as written. One cannot dilute .75 milliliters (mL) to make a smaller volume of 0.25 milliliters. I suspect that the question should read "What is the volume of water that must be added to 300 mL of .75 M HCl to dilute the solution to 0.25 M?" This is a sensible question. M refers to molarity, or moles per liter. To solve this problem and others like it, use the equation M1V1 = M2V2. M1 = the molarity of the initial/more concentrated solution V1 = the volume of the initial/more concentrated solution M2 = molarity of the second/more dilute solution V2 = volume of the initial/more dilute solution Plug in the known values, rearrange and solve algebraically. For the problem above, this is (M1V1/M2 = V2, or (.75 M)(300 mL)/(.25M) = 224.75 mL needed.

300ml (milliliters or cc) is 10.14 fluid ounces.

8L + 300ML = 8300ML or 8.3L

300mL is 30cL* There are 10mL per cL and 0.1cL per mL

The concentration of the diluted solution will be 15(300/1000) = 4.5 %, if the percent is expressed on a weight/volume basis.

If 3 litres has 10% solution of sugar, the sugar comprises 300ml (i.e. a tenth of 3000). If we want 300ml to be 5% then we need a total of 100/5 * 300 = 6,000ml (6 litres). So we need to add 3 more litres of water. In other words, to halve the percentage of sugar we need to double the total solution from 3 litres to 6 litres.

it is 60ml

300mL is .3 L 1L = 1000 mL 300/1000 = .3

300 ml is close , but a bit on the small side.

1.25l, 150cl, 45cl, 750ml, 300ml, 0.35l

25%% rate:= 75/300 * 100%= 0.25 * 100%= 25%

300grams

That is 1.323 cups

0.3 litres

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