Chemistry

Chemistry, 16.07.2019 18:30, lyn94

Which is a way to express concentration of a solution? 1. parts per billion 2. moles 3. molar mass 4. force per square meter

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Chemistry, 22.06.2019 08:00, kleathers97

Nconcentration refers to the molar concentration of an ion in solution. it may be identical to, or greater or less than, the molar concentration of the compound containing the ion that was used to make the solution. for soluble salts, the molarity of a particular ion is equal to the molarity of that compound times the subscript for that ion. for example, 1 m of alcl3 is 1 m in al3+ and 3 m in cl−. 1 m of (nh4)2so4 is 2 m in nh4+ and 1 m in so42−. part a what is the concentration of k+ in 0.15 m of k2s? view available hint(s) nothing m m part b if cacl2 is dissolved in water, what can be said about the concentration of the ca2+ ion? view available hint(s) if is dissolved in water, what can be said about the concentration of the ion? it has the same concentration as the cl− ion. its concentration is half that of the cl− ion. its concentration is twice that of the cl− ion. its concentration is one-third that of the cl− ion. part c a scientist wants to make a solution of tribasic sodium phosphate, na3po4, for a laboratory experiment. how many grams of na3po4 will be needed to produce 550 ml of a solution that has a concentration of na+ ions of 0.700 m ? express your answer numerically in grams. view available hint(s) mass of na3po4 n a 3 p o 4 = nothing g provide feedback

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Chemistry, 25.06.2019 08:40, SKYBLUE1015

Recall that question 2 of pre-lab quiz for project 3 introduced that molarity (molar concentration) of a solution is defined as the ratio of the amount of solute in moles to the amount of solution in liters. molarity is a common unit to express solution concentration. m o l a r i t y o f a s o l u t i o n = n u m b e r o f m o l e s o f s o l u t e ( m o l ) v o l u m e o f s o l u t i o n ( l ) during the first week of this project, you need to start with preparing stock solutions for different dyes. suppose you choose to prepare the stock solution of red dye #40 by measuring 0.05 g of dye powder, and making a 100 ml dye solution with volumetric flask. what is the molarity of this stock solution (in mol/l)? (hint: convert mass of dye powder to the number of moles first using molar mass.)

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Chemistry, 23.07.2019 16:00, agilitygirl1

After a chemistry student made a agno3(small 3 at bottom) solution., she wanted to determine the molar concentration of it. if 22.0g of agno3(small 3) (molar mass=169.91 g/mol) were dissolved in water to a final solution volume of 725 ml, what is the molar concentration of this solution.

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Physics, 22.08.2019 04:00, xxaurorabluexx

Which is a way to express concentration of a solution? parts per billion moles molar mass force per square meter

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