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BabaBlast [244]
4 years ago
9

If it takes 645 J of energy to warm a 5.51-g sample of water, how much energy would be required to warm 55.1 g of water by the s

ame amount?
Chemistry
1 answer:
hjlf4 years ago
4 0

Answer:

Explanation:If 5.51 g of water needs 645 J of energy to warm then 55.1 g of water needs 6450 J of energy to warm.

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What is the percent by mass of carbon in acetone, c 3 h 6 o?
Tatiana [17]
In the problem, we are tasked to solved for the amount of carbon (C) in the acetone having a molecular formula of C 3 H 6 O. We need to find first the molecular weight if Carbon (C), Hydrogen (H), Oxygen (O).

Molecular Weight:
C=12 g/mol
H=1 g/mol
O=16 g/mol

To calculate for the percent by mass of acetone, we assume 1 mol of acetone.
%C=( \frac{3(12 g/mol)}{3(12 g/mol)+6(1 g/mol)+16 g/mol} ) x 100%
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3 years ago
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tamaranim1 [39]

Answer:

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Explanation:

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3 0
1 year ago
Which of these molecules and polyatomic ions cannot be adequately described using a single Lewis structure? Check all that apply
11Alexandr11 [23.1K]
<h3><u>Answer;</u></h3>

 CO3^2- and O3

<h3><u>Explanation;</u></h3>
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  • A polyatomic ion is a charged particle which has two or more atoms held together by covalent (sharing of pairs of electrons) bonds.
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