Answer:
Electronegativity (χ) is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself. Atoms with higher electronegativity attracts more electrons towards it, electrons are closer to that atom.
<u>Given:</u>
Total Candium = 35
# of M&M = 15
# of Skittlitium = 12
# of Peanutttium = 8
<u>To determine:</u>
The relative abundance for each
<u>Explanation:</u>
Relative abundance = amount of each item in the sample/Sample total
M&M = 15/35 = 0.429 (or) 42.9 %
Skittlitium = 12/35 = 0.343 (or) 43.3 %
Peanuttium = 8/35 = 0.229 (0r) 22.9%
Answer : The amount of heat absorbed are, 258485.5 J
Solution :
Formula used :
where,
Q = heat gained = ?
m = mass of water = 650 g
c = specific heat of water =
= final temperature =
= initial temperature =
Now put all the given values in the above formula, we get the final temperature of copper.
Therefore, the amount of heat absorbed are, 258485.5 J
The empirical formula is C₇H₆O₂.
Assume that you have 100 g of the compound.
Then you have 68.84 g C and 4.962 g H.
Mass of O = (100 – 68.84 – 4.962) g = 26.20 g O.
Now, we must convert these masses to moles and find their ratios.
From here on, I like to summarize the calculations in a table.
<u>Element</u> <u>Mass/g</u> <u>Moles</u> <u>Ratio</u> <u> ×2</u> <u>Integers</u>
C 68.84 5.732 3.501 7.001 7
H 4.962 4.923 3.006 6.012 6
O 26.20 1.638 1 2 2
The empirical formula is C₇H₆O₂.