What happens to temperature as a substance melts and heat energy is used to break the connections between molecules, until all melting is complete?.
Answer : Stays the same
f it is solid iron, use the density to get the mass. D x V = mass
Use the mass to find the moles of Fe. Mass/atomic mass = moles
Moles x Avogadro's number will give you the particles, assuming that you mean atoms.
Answer:
1.D
2.C
3.D
4.D
5.C
6 B
those are the answers, we must take care of our environment
Phenolphthalein turn pink in basic solutions.it turn colourless in acid solution.
Hence options(1)is correct
