When a 10g sample of liquid water increases in temperature from 13°C to 18°C, then the amount of gained energy is 209 joules.
<h3>How do we calculate gained energy?</h3>
The amount of energy which is gained by any sample will be calculated as:
Q = mcΔT, where
Q = gained energy
m = mass of sample = 10g
c = specific heat of water = 4.18 J/g°C
ΔT = change in temperature = 18 - 13 = 5°C
On putting values we get
Q = (10)(4.18)(5)
Q = 209 Joules
Hence required amount of energy is 209 joules.
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This is a simple chemical change due to what it produces and how it is added together. Hope this helps.
Other tests that could be performed to come to a verify your alum include a potassium flame test which would burn the potassium within the alum to be compared and/or a colorimetric <span>determination of alum test by observing the absorption rate of our alum. </span>
Answer/Explanation:
Things that will vary include the distribution of electrons between atoms, lone pairs, and bonds, the number of single vs double or triple bonds, and the formal charges on atoms in the structure.
All resonance forms of the same molecule or ion must have the same number of atoms, connected in the same way, and the same number of total electrons.
Answer:
The correct answers are given below
Explanation:
1 An increase of one in atomic number and no change in the mass number.
2 All the above statements are correct.
3 A decrease of one in atomic number and a decrease of four in mass number.
4 Have a high neutron to proton ratio.
