a.
Chemistry, 11.11.2019 21:31 yolo123321
Which of the following statement describes dinosaurs during the mesozoic era?
a.
they were very inactive
c.
they were good mothers
b.
they were cold-blooded
d.
they are the direct ancestors to birds
Answers: 2
Chemistry, 22.06.2019 08:00
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 clâ. 1 m of (nh4)2so4 is 2 m in nh4+ and 1 m in so42â. 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 clâ ion. its concentration is half that of the clâ ion. its concentration is twice that of the clâ ion. its concentration is one-third that of the clâ 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
Answers: 3
Chemistry, 22.06.2019 19:50
Identify the lewis base in this balanced equation: fe3+ h2o fe(h2o)63+
Answers: 1
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Aman applies a force of 500n to push a truck 100m down the street how much does he do?
Answers: 1
Chemistry, 23.06.2019 01:30
How does the attraction between particles affect the ability of a solvent to dissolve in a substance
Answers: 1
Which of the following statement describes dinosaurs during the mesozoic era?
a.
a.
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