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Oduvanchick [21]
4 years ago
14

Which of the following would you predict to have a positive value for º ?

Chemistry
1 answer:
alexdok [17]4 years ago
8 0
Given:

AgCl (s) ===> Ag+ (aq) + Cl- (aq)
- negative entropy

H2O(g) ===> H2O(l)
- positive entropy

2Na (s) + Cl2 (g) ===> 2NaCl (s)
- positive entropy

Br2(l) ===> Br2 (s)
-positive entropy

They are identified to have positive or negative values of entropy based on the phases of the reactants and products. 
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It is false, hope this helps!
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An oxygen atom has a mass of 2.66 x 10^-23 g and a glass of water has a mass of 0.050kg. Use this information to answer the ques
fomenos
<h2>ANSWER OF EACH PART ARE GIVEN BELOW</h2>

Explanation:

A)

We know, each mole contains N_A= 6.023 \times 10^{23} atoms.

It is given that mass of one oxygen atom is m= 2.66\times 10^{-23}\ g.

Therefore, mass of one mole of oxygen, M=m\times N_A.

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M=2.66\times 10^{-23}\times 6.023\times 10^{23} \ gm\\M=16.0\ gm

B)

Given,

Mass of water in glass=0.050 kg = 50 gm.

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LEARN MORE :

Avogadro's number

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3 0
3 years ago
Urea is a common fertilizer with the formula CO(NH2)2 that is sometimes used as a chemical de-icer for icy road surfaces in the
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Answer:

The answer to your question is  molality = 0.61

Explanation:

Freezing point is the temperature at which a liquid turns into a solid if a solute is added to a solution, the freezing point changes.

Data

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Formula

ΔTc = kcm

Solve for m

m = ΔTc/kc

Substitution

m = 1.13 / 1.86

Simplification and result

m = 0.61

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