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mars1129 [50]
3 years ago
10

A starfish opening a clam is physical change or chemical change?

Chemistry
1 answer:
maks197457 [2]3 years ago
8 0

Answer: Physical change

Explanation: Quite simple as the starfish opening a clam would mean the starfish is physically changing the clams look.

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zvonat [6]

Answer:

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Explanation:

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8 0
3 years ago
How many electrons does nitrogen (N) need to gain to have a stable outer electron shell
earnstyle [38]
It need "3 electrons" to have a stable electronic configuration. 

'cause it has 5 electrons in it's outer shell & every atom needs 8 electrons. So, it requires 3 more!

Hope this helps!
7 0
3 years ago
Read 2 more answers
What is the major product in this reaction
Butoxors [25]

Answer:

I think option A is right answer

4 0
3 years ago
How Many protons is there
grigory [225]
Protons in science is positive
4 0
3 years ago
Determine the number of moles in 382.5g of CO-2
exis [7]

Answer: 8.691 mols of CO₂

Explanation:

To find the number of moles in a given grams, you want to use the molar mass.

Let's first find the molar mass of CO₂.

Carbon's molar mass is 12.011 g/mol

Oxygen's molar mass is 15.999 g/mol

To find molar mass of CO₂, we want to add up the molar mass of carbon and oxygen. Remember, there are 2 Oxygens so we need to mulitply that by 2.

12.011+2(15.999)=44.009 g/mol

Now that we have molar mass, we can convert 382.5 g to mols.

382.5g*\frac{1 mol}{44.009g} =8.691 mol

There are about 8.691 mols of CO₂.

5 0
3 years ago
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