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PtichkaEL [24]
3 years ago
13

If a sample of gold is a cube what is the length of each edge in centimeters

Chemistry
1 answer:
Irina-Kira [14]3 years ago
4 0
<span>This question cannot be answered in actual centimeters unless at least one edge has a known length however it can be written as (length^3) or (length cubed). As an example if the sample of gold cube had one length of 3cm then all lengths would be 3cm on the cube.</span>
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What is δs° for the reaction so2(s) no2(g) → so3(g) no(g)? substance s°(j/k • mol) so2(g) 248.5 so3(g) 256.2 no(g) 210.6 no2(g)
zimovet [89]

The value of ΔS° for reaction  is - 22.2 J/K.mol

SO_{2}(s)+NO_{2} (g) → SO_{3}(g)+NO(g)

Calculation,

Given value of S°(J/K.mol) for

SO_{2}(s) = 248.5

NO_{2} (g) = 240.5

NO(g) = 210.6

SO_{3}(g) = 256.2

Formula used:

ΔS° (Reaction) =  ∑S°(Product) - ∑S°(Reactant)

ΔS° = (256.2 + 210.6 ) - ( 248.5 + 240.5) = 466.8 - 489 = - 22.2 J/K.mol

The change in stander entropy of reaction is  - 22.2 J/K.mol. The negative sign indicates the that entropy of reaction is decreases when reactant converted into product.

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brainly.com/question/3664113

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3 0
2 years ago
A 3.35 g sample of an unknown gas at 81 ∘C and 1.05 atm is stored in a 1.75 L flask.
ra1l [238]

Answer:

Molar mass = 52.96g/mol

density = 1.91g/L

Explanation:

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7 0
4 years ago
What experiment did Robert Millikan do?
scZoUnD [109]
I’m not sure it’s correct but I think it’s D) He used voltage adjustments to make charges oil drops float
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Which terms means the loudness of sound?
tangare [24]

Explanation:

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C. Another radioisotope of americium exists which has an atomic mass of 242.
ollegr [7]

Answer:

1 g  

Explanation:

The half-life of Am-242 (16 h) is the time it takes for half of it to disappear.

We can make a table of the mass left after each half-life.

\begin{array}{cccc}\textbf{No. of} & & \textbf{Percent} & \textbf{Mass}\\\textbf{Half-lives} & \textbf{Time/h} & \textbf{Remaining} & \textbf{Remaining/g}\\0& 0 & 100 & 8\\1 & 16 &50 & 4\\2 & 32 & 25 & 2\\3 & 48 & 12.5 & 1\\4 & 64 & 6.25 & 0.5\\\end{array}

The mass remaining after 48 h  is 1 g.

7 0
3 years ago
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