Answer:
-1273.3
Explanation:
Enthalpy of formation of a compound is the amount of heat absorbed or evolved when one mole of the compound is formed from other compounds.
enthalpy of formation Of CO2 = 2 X -393.5 = -787
enthalpy of formation Of C2H5OH = 2 X -277.7 = -555.4
enthalpy of formation Of C6H12O6 = 69.1 (reverse sign) + (-787 + -555.4) = - 1273.3 Joules
Answer:
D. Ultraviolet light should have a short wavelength, not a long wavelength.
Explanation:
just took the quiz on Ed
Answer:
The answer to your question is below
Explanation:
There are two kinds of mixtures
- Homogeneous is a mixture of two or more elements or compounds and its components can not be distinguished visually.
- Heterogeneous is a mixture of two or more elements or compounds and its components can be distinguished visually.
a cup of tea and sugar homogeneous
peanuts and almonds mixed together in a bowl heterogeneous
a bucket full of sand and gravel heterogeneous
food coloring dissolved in water homogeneous
Answer:
The mass is recorded as 32.075 g
Explanation:
"The first digit of uncertainty is taken as the last significant digit", this is the rule for significant figures in the analysis. The balance measures the mass up to three decimal places, so it makes the most sense to note the whole figure.
Check the attached file for the answer.