Answer:
91kj/mol;no
Explanation:
Took this before I gotchu.
Heat can be calculated using the formula:
U = mCpΔT
where:
U = internal energy or heat
m = mass of substance
Cp = specific heat capacity of a substance (constant)
ΔT = change in temperature = (Tf - Ti)
In the problem, we are given all these terms except for the Cp, which can help identify what the substance is. This is because Cp is unique and constant for a particular substance.
9760 = 200(Cp)(45-25)
Cp = 2.44 J/g-°C
Now, look for a library or list of specific heat capacities. Look for a substance that has the closest value to what you calculated. Based on data, the substance used is ethyl alcohol which has a Cp of exactly 2.44 J/g-°C
You can use this as reference: http://www.engineeringtoolbox.com/specific-heat-capacity-d_391.html
Answer:
Water is a chemical compound and polar molecule, which is liquid at standard temperature and pressure. It has the chemical formula H2O, meaning that one molecule of water is composed of two hydrogen atoms and one oxygen atom.
Explanation:
