At 25°C, which of the following reactions is fastest? Explain how you know. a) H2 (g) + I2(g) --> 2HI (g)
b) Aq+(aq) + I-(aq) --> AgI(s)
c) C6H12O6(s) + 6O2 (g) --> 6CO2(g) + 6H2O (g)
d) 5C2O4-(aq) + 2MnO4-(aq) +16H+(aq) --> 10CO2 (g) + 2Mn(aq) + 8H2O(l)

What are scientists who study fossils called? ( a ) astronomers. ( b ) biologists. ( c ) geologists. ( d ) paleontologists.

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

Complete the following statements to describe solids, liquids, and gases. select the correct answer from each drop-down menu. a solid a definite volume and a definite shape. a liquid a definite volume and a definite shape. a gas a definite volume and a definite shape