Can someone help me i need these ASAP!!

Imagine if during the cathode ray experiment, the size of the particles of the ray was the same as the size of the atom forming the cathode. which other model or scientific observation would have also been supported? 1. this would support dalton's postulates that proposed the atoms are indivisible because no small particles are involved. 2. this would support bohr's prediction about electrons moving in orbits having specific energy. 3. this would support bohr's prediction about electrons being randomly scattered around the nucleus in the atom. 4. this would support dalton's postulates that proposed that atoms combine in fixed whole number ratios to form compounds.

A20 gram piece of metal is added to a sample of 100 grams of water inside a calorimeter. if the metal is at a temperature of 125° celsius and the water is at 20° celsius, which of the following best describes what will occur inside the calorimeter? (2 points)

For the reaction ch3cooh > ch3coo- + h+, which of the following statements is true? a.) ch3cooh is a bronsted lowry base. b.) ch3coo- is a bronsted lowry base. c.) ch3coo- is a conjugate base. d.) ch3coo- is an arrhenius base.