It is OH- (hydroxide ion)
Answer:
The 5 chemical changes are. 1) Tarnish, 2) Rust, 3) Dissolve, 4) Burn, 5) Bake.
Answer: C. A Chemical Change
Explanation:
A chemical change is one that occurs when new substances are produced preceding a chemical reaction ( the mixing or combination of one substance with another).
From the experiment by Jasmine, since light was produced from the mixture, energy is being released which is due to a chemical change.
Answer:
2.32 liters
Explanation:
you would just divide 24 by 3 which is 8 and multiply 290 by it which is 2320 and divide by 1000 which is 2.32
I believe it to be g/mol of Calcium carbonate
because to finde mass...u must have grams(g) as units....
it is the only one that have g as units
as for the first answer the avogadros number gives u the number of atoms in one mole of calcium carbonate....
the second one is based on ... At s.t.p one mole of gas occupies 22.4 dm³⇒to find volume
