General chemistry?

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I'm having trouble with the last 5 problems on my homework. Any help would be greatly appreciated!

Label each of the following as a combination, decomposition, single or double replacement. Then complete the reactions and balance.

NaI+Br2 =
NiSO4•7H20=
HNO3+Ca(OH)2=
Cu+Zn(NO3)2=
MgO+CO2=

Thanks again!!!!

2007-04-30 09:20:06 · 1 answers · asked by Stephanie S 1 in Science & Mathematics ➔ Chemistry

1 answers

2NaI + Br2 ===> 2NaBr + I2 single replacement

NiSO4*7H2O ===> NiSO4 + 7H2O decomposition

2HNO3 + Ca(OH)2 ===> Ca(NO3)2 + 2H2O neutralization, or maybe double replacement if your chemistry teacher is a...

Cu + Zn(NO3)2 ===> No reaction! Your chemistry teacher is a certified...

MgO + CO2 ===> MgCO3

2007-04-30 09:51:09 · answer #1 · answered by steve_geo1 7 · 0⤊ 0⤋