Which of these subatomic particles is found in the nucleus of an atom? a. the protons and electrons
b. the neutrons and electrons
c. the protons
d. protons and neutrons

it is very well related to a lot of things but with my limited knowledge i can confidently say that the answer is space.

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

= initial pressure

= final pressure = 2

= initial volume

= final volume = /4

= initial temperature = 20 c = 20 + 273 = 293 k

= final temperature = ?

using the equation