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Sphinxa [80]
2 years ago
7

Help me Please Is boiling an egg a physical or a chemical change? Explain your answer.

Chemistry
1 answer:
Blababa [14]2 years ago
6 0

Answer:

it's a chemistry change

Explanation:

this is because heat is causing permanent changes and can no longer be changed back to its original atate

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Pavlova-9 [17]
A phenotype<span> is the composite of an organism's observable characteristics or traits, such as its morphology, development, biochemical or physiological properties, behavior, etc..
I hope that helps you</span>
4 0
3 years ago
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If 3.91 moles of H2 were used, how many moles of NH3 would be made?<br><br> HELP PLEASE ASAP
matrenka [14]

N + H2 → NH3

balance the equation

2N + 3H2 → 2NH3

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3 : 2

3.91 ÷ 3 = 1.303 mol

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7 0
3 years ago
Mercury has a mass density of 13.54g/mL. How many milliliters would 100. Grams occupy?
Harman [31]

Answer:

The answer is

<h2>7.39 mL</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density}  \\

From the question

mass of Mercury = 100 g

density = 13.54 g/mL

The volume of the metal is

volume =  \frac{100}{13.54}  \\  \approx7.38552437...

We have the final answer as

<h3>7.39 mL</h3>

Hope this helps you

4 0
3 years ago
Why is matter measured in mass and not weight?​
wel

Answer:

But why should it even <u>matter</u>?

Explanation:

Mass is a measurement of the amount of matter something contains, while Weight is the measurement of the pull of gravity on an object.

The Mass of an object doesn't change when an object's location changes. Weight, on the otherhand does change with location.

Hope this helps!!

Brainliest??

7 0
3 years ago
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What is the majo difference between sieving and filtration​
balu736 [363]

Answer:

sieving is d method of separating 2 solid of different sizes with the aid of sieve mesh

filtration is d method of separating insoluable solid from liquid with the aid of filter paper

6 0
3 years ago
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