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kiruha [24]
2 years ago
12

The total mass of a chemical reaction always _____.

Chemistry
2 answers:
makkiz [27]2 years ago
5 0

Answer:

remains constant.

Explanation:

never [62]2 years ago
3 0
Remains constant is the answer
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What ion the element P forms? Explain.
emmasim [6.3K]
Phosphorus is in group 15 meaning it have 5 valence electrons. This means that it needs 3 more electrons to create a full outer shell. As these three electrons are negatively charged it means that P is a 3- ion (it’s an anion [negatively charged ion])
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2 years ago
What kind of chemical change do you think occurs when a banana peel turns brown in the open air?
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Rotting, and ageing. The banana peel ages faster in open air, and therefor begins to rot. Brow peels don't mean that the banana is rotted, however, it is a sign that it may begin to rot soon.
6 0
3 years ago
4.1 moles of sodium carbonate to molecules of sodium carbonate.​
docker41 [41]
<h3>Answer:</h3>

2.47 × 10^24 molecules

<h3>Explanation:</h3>

One mole of a compound contains molecules equivalent to the Avogadro's number, 6.022 × 10^23.

That is, 1 mole of a compound =  6.022 × 10^23 molecules

Therefore,

1 mole of Na₂CO₃ = 6.022 × 10^23 molecules

Thus, we can calculate the number of molecules in 4.1 moles of Na₂CO₃

we get,

 = 4.1 moles × 6.022 × 10^23 molecules

 = 2.47 × 10^24 molecules

Hence, 4.1 moles of Na₂CO₃ contains 2.47 × 10^24 molecules

3 0
3 years ago
How many atoms of each element are in NaCI?<br><br><br> |___| sodium <br><br> |___| chlorine
gogolik [260]

Answer:

There are 2 atoms in NaCl. This is because there is 1 atom of Na (sodium) and 1 atom of Cl (chlorine) in each NaCl molecule. Elements by themselves do not have a "number of atoms"- if you're talking about the atomic number, it's the number of protons (or electrons in a neutral atom) of an element.

7 0
2 years ago
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What do scientists call an orderly pattern of change over time
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ecological. i hope this helps!!!!

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2 years ago
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