Check my answers on 2 questions?
Which of the following is a single replacement reaction?

$CaO + H_2O \rightarrow Ca(OH)_2\
Mg + 2HNO_3 \rightarrow Mg(NO_3)_2 + H2\
NaOH + HCl \rightarrow H_2O + NaCl\
CH_4 + 2O_2 \rightarrow CO_2 + 2H_2O$

Question

Check my answers on 2 questions?
Which of the following is a single replacement reaction?

$CaO + H_2O \rightarrow Ca(OH)_2\
 Mg + 2HNO_3 \rightarrow Mg(NO_3)_2 + H2\
 NaOH + HCl \rightarrow H_2O + NaCl\
 CH_4 + 2O_2 \rightarrow CO_2 + 2H_2O$

sleepyjess · Answer

I believe it is the second option

sleepyjess · Answer

@iambatman

sreekar369 · Answer

u r correct @sleepyjess

sleepyjess · Answer

Then this on
Which of the following pairs of reactants will react together to produce water (H2O) as one of the products?

$Fe(OH)_3 ~and~ CuO\
Cu(OH)_2 ~and ~H_2S\
HBr ~and~ MgO\
SO_3 ~and ~H_2O$
 I think the second option again.

sreekar369 · Answer

correct

anonymous · Answer

The second option looks good, but I'm not entirely sure.

sreekar369 · Answer

@sleepyjess

anonymous · Answer

Ah, sreekar is a better help in chem than me :)

sleepyjess · Answer

:) you were a good helper in the other question

sreekar369 · Answer

thqs @iambatman

andrewthecookie · Answer

thqs XP

anonymous · Answer

:)

danjs · Answer

MgO + 2 HBr ---> MgBr2 + H2O
and
Cu(OH)2 + H2S --->  CuS + 2H2O 

2 of them will form water, double displacement reactions.

danjs · Answer

Magnesium oxide and hydrogen bromide produce magnesium bromide and water