WILL GIVE BRAINLIEST PLZ HELP The nucleus of an atom is made up of:

Question 1 options:

neutrons and electrons

protons and electrons

protons and neutron

Question 2 (1 point)

How is the number of protons represented in the periodic table?

Question 2 options:

atomic number

mass number

atomic mass

isotope

Question 3 (3 points)

Question 3 options:

83.80

36

Kr

1.

element symbol

2.

atomic mass

3.

atomic number

The arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s . 1.) a. precipitation b. water vapor c. icy debris 2.) a. gravitational compression b. biochemical cycling c. radiogenic heating 3.) a, gravity b. magnetic field c. heat energy for plato

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°c by rejecting waste heat to cooling water that enters the condenser at 18°c at a rate of 0.25 kg/s and leaves at 26°c. the refrigerant enters the condenser at 1.2 mpa and 50°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.