Which equation represents and oxidation/reduction (redox) reaction? a) zns(s) + 2hcl(aq) → zncl2(aq) + h2s(g) b) h2so4(aq) + 2koh(aq) → k2so4(aq) + 2h2o(l) c) 2al(no3)3(aq) + 3zn(s) → 2al(s) + 3zn(no3)2(aq) d) na2co3(aq) + ca(no3)2(aq) → caco3(s) + 2nano3(aq)

What metric units would you use to measure the thickness of a key

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of

Which one of the following substances would be the most soluble in ccl4? na2so4 h2o ch3ch2ch2ch2oh c4h10 hi