Answer : Barium sulfate
and Sodium nitrate
are produced during replacement reaction.
Explanation :
Double-displacement reaction : It is a type of chemical reaction in which two reactants exchange ions to form two new compounds.
The Net balanced chemical reaction is ,

This is a double-displacement reaction.
In this reaction, barium nitrate react with the sodium sulfate to produce barium sulfate and sodium nitrate.
The corect answere is "crust and outer part of the mantle". Hope it helps!
They are asking about the molecule change!
Answer:
2.94 * (10^6) minutes = 291.666667 weeks
Explanation:
Answer:
2NaCN + CaCO3 --> Na2CO3 + Ca(CN)2
Explanation:
Knowing the names gets us: NaCN + CaCO3 --> Na2CO3 + Ca(CN)2
Balance: there are two sodiums and cyanides on the product side so add a 2 to the reactant side.