7. An ore sample weighing 8.60 kg is found to contain 1.40 kg of copper. a). Calculate the percent copper in the ore. Percent - Part xloo
Whole
P = 1.400g copper = x 100
16.3
Problem-solving:
% Cu
ore
8. 60kg
b) Write the percent value from a) into two conversion factors.
% value

16:3_%Cu
(from the answer a)
Two conversion factors
16.3 copper
8.60 ore
8.60ore
16.3 copper
or
c) How many kg of copper are there in 125 kg of ore? Solve this by factor-label method
using a conversion factor in part b).

How do I set this up in a conversion factor?

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Part b: study of equilibrium on solubility: mg(oh)2(s) ⇌ mg2+(aq) + 2 oh–(aq) cloudy clear (pink) 7. a. b. 8. a. b. 9. 10. 11. 12. when adding concentrated hydrochloric acid, how did the appearance of the equilibrium mixture change? the change in appearance indicated a shift in the point of equilibrium. in which direction did the equilibrium shift? (l) left (r) right explain your answer to question 7a. you should indicate which ion was added to or removed from the equilibrium mixture. when adding edta, how did the appearance of the equilibrium mixture change? the change in appearance indicated a shift in the point of equilibrium. in which direction did the equilibrium shift? (l) left (r) right explain your answer to question 8a. you should indicate which ion was added to or removed from the equilibrium mixture. upon heating in which direction is the equilibrium shifting? upon cooling in which direction is the equilibrium shifting? is the forward reaction a. endothermic explain your answers to questions 9, 10, and 11. (l) left (r) right (l) left (r) right b. exothermic

Imagine that twenty i.u.’s of enzyme z were catalyzing the above reaction for one minute, under vmaxconditions, in a 3.00 ml assay volume. the assay is buffered with 20 mm phosphate buffer, ph 7.60. what will the ph be at the end of that one minute?