A mixture of baking soda is prepared in water. The mass of this mixture is 225g. The original mass of baking soda was 50g. What is the original mass of water to which the baking soda was added?

A) 50g

B) 175g

C) 225g

D) 275g

Which units are used to measure both velocity and speed? Select three options. m/s d/t km/h mph lph

How are ions Formed?

If the pressure of a gas at constant volume is 3.5 atm at 100°c, what will the pressure be if the tempature is changed to 250°c?

Which of these statements regarding enzymes is FALSE? a. Enzymes work best at a particuluar pH and temperature. b. Enzymes display specificity for certain molecules on which they will work. c. Enzymes are proteins that function as catalysts. d.

What observations can be made with electron microscopes that could be made before?

Is the following sentence true or false? A molecular formula shows the arrangement of the atoms in a molecule.

Your task is to measure the amount of energy evolved during the combustion of some hydrocarbon. Which of the following would be the ideal technique for this experiment? a. bomb manometry b. coffee-cup calorimetry c. bomb calorimetry

Which of the following characteristics is not a property of an acid? a. has a sour taste b. accepts an H + ion c. may cause damage to buildings, statues, and rivers d. increases the concentration of hydronium ions in an aqueous solution

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.