The scientific community dismissed John Needham’s attempt to prove spontaneous generation. What was the reason that they gave? * A. By sealing off the flask he deprived the environment of air, a requirement of spontaneous generation

B. He used the wrong type of flask

C. He left the flasks open to the air for too long

D. He did not boil his broth long enough and the flasks were not cleaned prior to the experimenter.

Can anyone (a-level) a student was analysing a carbonate compound, mco3, containing an unknown group 2 metal, m. the student carried out thermal decomposition on 0.730g of the carbonate and measured the volume of gas produced. mco3 (s) mo (s) + co2 (g) the student collected and measured 120cm3 of carbon dioxide. 1 mol of carbon dioxide occupies 24 000 cm3 under these conditions. calculate the molar mass of the group 2 carbonate and hence deduce the identity of the group 2 metal, m.

Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.

How heavy is thanos? a) 3000 lbs b) all of it c) the price of tea in china d) heavy enough