Scelta multipla
A compound has an empirical formula of C2H5O and a molecular mass of 135 amu. What is the molecular formula?
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3. Chemical Reactions
Molecular Formula
Scelta multipla
How many hydrogen atoms are in one formula unit of ammonium phosphate (NH4)3PO4?
A
8
B
12
C
4
D
16
Guida verificata passo dopo passo1
Identify the chemical formula for ammonium phosphate, which is \((NH_4)_3PO_4\).
Recognize that the formula contains the ammonium ion \((NH_4)^+\), which has 4 hydrogen atoms.
Note that there are 3 ammonium ions in the formula unit, as indicated by the subscript 3 in \((NH_4)_3\).
Calculate the total number of hydrogen atoms by multiplying the number of hydrogen atoms in one ammonium ion by the number of ammonium ions: \(3 \times 4\).
Conclude that the total number of hydrogen atoms in one formula unit of ammonium phosphate is \(12\).
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