To create the liquid and superfluid states you cool down helium gas to a few degrees above absolute zero
Answer:
H2SO4 + Cu(OH)2 ---> CuSO4+ 2H2O
D. Synthesis cause A + B --> AB
Equation: 2Na + Cl2 --> 2NaCl
It's 1. Melting a substance. The rest are chemical changes
Answer:
35
Explanation:
An atom is neutral, meaning that the number of protons is equal to the number of electrons.
