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Q: What is the pH of a solution with H plus equals 7.0 10 2?
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It consists of 70 percent water?

The human body.


If you have a 70 percent solution of dextrose How many grams of dextrose is in 400ml of this solution?

8.0 g according to my teacher but i dont know the formula


The solution of which substance will hold 70 grams of substance for each 100 grams of water at 30 degrees?

KBr


How do you prepare 5 percent nitric acid solution from 55 percent nitric acid?

To solve this problem, we basically have 2 equations and 2 unknowns. The unknowns are the (volume of water) & the (volume of 70 wt%) nitric acid to add. * This problem will assume that you are interested in making 1 L (or 1000 mL) of 5 wt% nitric acid solution. Equation 1: (volume of water) + (volume of 70 wt% nitric acid) = 1000 mL Equation 2: mass of nitric acid / [mass of water + mass of 70 wt% nitric acid solution] = 0.05 (0.05 is 5 wt%) * Remember that mass = density * volume * Remember that 70 wt% nitric acid solution mean that for 100 grams (gm) of this acid, then there's 70 grams of HNO3 * Remember that density of 70 wt% nitric acid solution is 1.413 gm/cm^3 * Remember that density of water is 1 gm/cm^3 Equation 2 is now re-written as: [(density of 70 wt% nitric acid soln)*(volume of 70 wt% nitric acid)*0.70] / [(volume water)*(1gm*cm^3) + (volume of 70 wt% nitric acid)*(1.413gm/cm^3)] = 0.05 Solving for the 2 equations gives answer to the 2 unknowns: Answer: To make 1000 mL of 5 wt% nitric acid solution, add 1) 51.63 mL of 70 wt% nitric acid solution 2) 948.37 mL of water


How much of an alloy that is 20 should be mixed with 100 ounces of an alloy that is 70 copper in order to get that 40 copper?

40 parts of 20 % plus 60 parts of 70 %