You are performing an experiment in the lab and have reactant A and Reactant B The total mass of both reactant before the experiment 15.0 grams you placed the reactant an open beaker to react without a name the beaker is cold to the touch after word you measure the product in the container and only get a mass of 12.4 grams what happened to the rest of the mass One of the products was possibly a gas ?

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.

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

1. if you have a gas at 127 degrees c, what is it's absolute temperature (kelvin)? a. 200kb. 300kc. 400kd. 500k2. if you had a gas whose absolute temperature measured 45 k, what is that temperature in celsius? a. -228 cb. -300 cc. 125 cd. 112 c