What energy is required to start a reaction

Which substance is the most acidic? lemon juice water sodium hydroxide tomato juice

If i combined 15.0 grams of calcium hydroxide with 75.0 ml of 0.500 m hcl, how many grams of calcium chloride would be formed?

How far would a couch move if it is pushed with 75 N to produce 15,000 J of work?

A certain electrochemical cell has for its cell reaction: zn + hgo → zno + hg which is the half-reaction occurring at the anode?

During photosynthesis, plants transform

Which of these conclusions can be drawn from Rutherford's experiment? A: Each atom contains electrons. B: The nucleus of an atom can be split. C: Each atom contains protons. D: Atoms are mostly empty space.

Describe one major laboratory accident mentioned in the training presentation, what chemicals were involved, the type of PPE that was worn at the time of the accident, and how it could have been prevented.

Which process creates food for plants in order to maintain homeostasis? Breathing Cell division Cellular respiration Photosynthesis

Describe a proton, neutron, and electron. Where are these particles located inside an atom.

A sample of gas is at 273°K and 2.00 atm with a volume of 6.00 liters. When the gas is compressed to 3.00 liters and the pressure increases to 3.00 atm, what is the new temperature of the sample?