<span>number of moles= mass / molecular mass
mass=131.50g
molecular mass of Zn(NO3)2 =189.39 g/mol
number of moles = 131.50 g/189.39 g/mol =0.69433 mol</span>
<span>Answer:
Enthalpy Change = (6 x -393.5) + (7 x -285.8) - (-204.6) + (19/2) 0.....???
like.. (6 x Enth CO2) + ( 7 x Enth H2O) - (Enth C6H14) + (19/2) Enth O2</span>
Answer:
Acetic or ethanoic acid.
Explanation:
Hello,
Butyl acetate's hydrolisis is shown below:
Whereas 
is the butyl acetate, 
butanol and 
the required produced acid, acetic or ethanoic acid (attached picture).
Best regards.
Answer: -2.13%
Explanation:
I will assume that the correct time is 94 seconds, since it is stated as a fact. The measured time of 92 seconds is -2 seonds from the actual. That gives a percent error of:
[(Measured-Actual)/Actual] or (-2/94) or -2.13%
