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3 years ago

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The amount of energy that is transferred when one mole of a compound is formed from its component elements in their standard sta

tes is the

1 answer:

amm18123 years ago

5 0

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A jeweler guarantees that a piece of jewelry is at least 95% gold, by mass. You consider buying a piece of gold jewelry that wei

ELEN [110]

The density of the sample is:
Density = mass / volume
Density = 9.85 / 0.675
Density = 14.6 g/cm³

If the sample has 95% gold, and 5% silver, its density should be:
0.95 x 19.3 + 0.05 x 10.5
Theoretical density = 18.9 g/cm³

The difference in theoretical and actual densities is very large, making it likely that the jeweler was not telling the truth.

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3 years ago

Which cause of wildfires is least likely to lead to catastrophic results

sleet_krkn [62]

The third is one: controlled burn

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2 years ago

Convert 24.3 cm to mi<br> show equation

Lostsunrise [7]

Answer:

if you are talking about miles the answer would be is 0.0001509932(divided by 160934)

if you are talking about mililiters it would be 24.3(multiply times one)

hope this helps

8 0

3 years ago

A car travels at a constant speed of 65 mph. How far will it have traveled in 4 hours

sattari [20]

Ngl idk but just be a nice person and mark as brainliest please

3 0

3 years ago

Read 2 more answers

What is the boiling point of methanol, if ∆H°for vaporization is 35.3 kJ/mol, and ∆S° for vaporization is 105 J/mol K?

QveST [7]

Answer: 336.2K

Explanation:

The boiling point is obtained from the standard enthalpy and entropy of vaporization as shown in the image attached.

Standard enthalpy of vaporization=35.3KJmol-1=35.3×10^3 Jmol-1

Standard entropy of vaporization= 105 JMol-1K-1

The formula and details of the solution are shown in the image attached.

6 0

3 years ago