What is the balanced equation for the redox reaction between copper and sulfuric acid that forms copper(II)sulfate, sulfur dioxide, and water?
A. Cu + 2H+ + 25042- → Cu2+ + SO42+ + SO2 + H2O + 2H+
B. Cu + 4H+ + 25042- → Cu2+ + SO42+ + SO2 + 2H2O + 2e
C. Cu + 4H+ + 25042 → Cu2+ + SO42+ + SO2 + 2H20
D. Cu + 2H+ + 250_2- + 2e
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Cu2+ + SO42+ + SO2 + H20
SUBMIT

If you add 5.00 ml of 0.100 m sodium hydroxide to 50.0 ml of acetate buffer that is 0.100 m in both acetic acid and sodium acetate, what is the ph of the resulting solution? acetic acid: ka = 1.8. x 10-5

8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm

In what way do investigations build scientific knowledge? the results of investigations lead to questions that cannot be tested. they reflect the opinions and social values of scientists, ensuring valid information. the results of investigations lead to new questions, which lead to new investigations. they are not influenced by the research of earlier scientists, so they are able to address gaps in understanding.i