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DrBpb222
Answers (7)
You didn't do anything wrong. The answer is wrong. For a pH of 8.4, the (H^+) [not OH^-)] must be 3.98E-9. You can prove that by pH = -log(H^+) -8.4 = log(H^+) Take antilog of both sides. 3.98E-9 = (H^+)
These numbers must refer to paragraphs, problems, chapters, or something of that nature where the full problem is found.
metals
C3H8 + O2 ==> CO2 + H2O. In my mind there is no "first" element to look at in balancing. People balance equations different ways. However, in the spirit of the question, I would start with C.
An insulin pump and an insulin pin are acceptable but I would call those the same treatment; i.e., with insulin. The difference is in the delivery system. Not all diabetics take insulin. There are other drugs available which work in some cases. Much of the
The 224/36 is correct. The 138/36 is correct. The 161/36 is not correct. The LCD is 36, 36/4 = 9 and 9 x 7 = ?? and ??/36 is the fraction. Thanks for showing your work. It helps us find the error much easier.
OK. I think I see part of the problem. I goofed in my earlier response(s). I said there was only one reaction with electrons on the left side, or a gain of electrons.As you have correctly pointed out, answers A and D have electrons on the left side;
