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Mandarinka [93]
3 years ago
10

I am confuse and need help

Chemistry
1 answer:
dmitriy555 [2]3 years ago
5 0

Answer:

+625kj/mol

Explanation:

I hope my is right

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There are several differences between chemical and physical changes. Which process is a sign of a chemical change? A. Rotting po
Nataly [62]

Answer:

A. a rotten potato gives all of bad smell

Explanation:

B,C,D are all physical changes because we can reverse them back.we can cool the water back to make ice. if the wind passes again we can randomly get the same cloud shape in c. and in d we can make that statue again. but in A can we reverse the rotting process ? ( the enzyme reaction) no we cant because it is a chemical reaction it gives a bad smell because of the chemical changes occuring in it.

hope this helps

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2 years ago
When a sample of liquid is heated, its thermal energy _______.
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Answer:

Entropy.

Explanation:

I really hope this is right! sorry if its wrong

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When iron, Fe, react with chlorine, Cl, the product is iron(II) chloride, FeCl. If 56.8 g of
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3 years ago
What is in the solar system?
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Answer:

All of the above

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All of this is in the solar system.

7 0
2 years ago
Read 2 more answers
Lead has a density of 11.3 g/mL. If you have 105 grams of lead,
Elza [17]

Answer:

<h2>Volume = 9.29 mL</h2>

Explanation:

Density of a substance can be found by using the formula

Density( \rho) =  \frac{mass}{volume}

From the question

Density = 11.3 g/mL

mass = 105 g

Substitute the values into the above formula and solve for the volume

That's

11.3 =  \frac{105}{v}

Cross multiply

11.3v = 105

Divide both sides by 11.3

v =  \frac{105}{11.3}

v = 9.29203

We have the final answer as

<h3>Volume = 9.29 mL</h3>

Hope this helps you

6 0
3 years ago
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