4.Consider the titration of a 25.0 mL sample f a 0.175 M CH3NH2 with 0.150 M HBr. Determine each quantity below; a. The initial pH b. The volume of added acid required to reach the equivalence point. c. The pH at 5.0 mL of added acid. d. The pH at one-half of the equivalence point. e. The pH at the equivalence point. f. The pH after adding 5.0 mL beyond

Cucl2 + 2nano3 cu(no3)2 + 2nacl what is the percent yield of nacl if 31.0 g of cucl2 reacts with excess nano3 to produce 21.2 g of nacl? 49.7% 58.4% 63.6% 78.7%

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Water is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. which change of state has most likely taken place? from a gas to a liquid from a liquid to a gas from a solid to a liquid from a gas to a plasma