Calcium carbonate reacts with nitric acid as follows. CaCO3(s) + 2HNO3(aq) + Ca(NO3)2(aq) + H20(l) + CO2(g)
0.05 mol of calcium carbonate was added to a solution containing 0.08 mol of nitric acid.
Which of the following statements is true?
A 0.05 mol of carbon dioxide is produced.
B 0.08 mol of calcium nitrate is produced.
C Calcium carbonate is in excess by 0:01 mol.
D Nitric acid is in excess by 0.03 mol.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

you did not give any options thus this is the best answer i can give to you with this little information you have given

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-love shrooms

the answer is 0.42 is that is an option. this question provides no info