Which of the following is true? - [ ] A mole of propane has more mass than a gram of propane.
- [ ] A mole of propane has 6.03 x 10^23 grams.
- [ ] A gram would have a lot more molecules of propane than a mole.
- [ ] There’s no difference; they’re the same.

Darla claims that the first periodic table developed by mendeleev was not completely accurate, so it is not useful at all. harmony argues that it establish the periodic table we use today, making it more credible. who is correct and why? darla is correct, because a model that has any mistakes should be thrown out. darla is correct, because a good model would not need to change. harmony is correct, because mendeleev’s model had all of the information correct in the first version. harmony is correct, because mendeleev’s model made predictions that came true.

The data below were determined for the reaction shown below. s2o82– + 3i – (aq) → 2so42– + i3– expt. # [s2o82–] (m) [i –] (m) initial rate 1 0.038 0.060 1.4 × 10 – 5 m/s 2 0.076 0.060 2.8 × 10 – 5 m/s 3 0.076 0.030 1.4 × 10 – 5 m/s the rate law for this reaction must be:

The molar mass of nickel(ni) is 58.7 g/mol. how many moles are in an 88 gram sample of nickel?