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Brilliant_brown [7]
3 years ago
12

The Law of Conservation of Mass says that mass

Chemistry
2 answers:
ASHA 777 [7]3 years ago
7 0
B Created it destroyed
S_A_V [24]3 years ago
6 0

Answer:

B

Explanation:

The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither <u><em>created</em></u> nor <u><em>destroyed</em></u> in chemical reactions. If we account for all reactants and products in a chemical reaction, the total mass will be the same at any point in time in any closed system.

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What is the electron configuration for<br> 08<br> 16
Elis [28]

The electron configuration for Oxygen : [He] 2s²2p⁴

<h3>Further explanation</h3>

Writing electron configurations starts from the lowest to the highest sub-shell energy level. There are 4 sub-shells in the shell of an atom, namely s, p, d, and f. The maximum number of electrons for each sub-shell is  

• s: 2 electrons  

• p: 6 electrons  

• d: 10 electrons and  

• f: 14 electrons  

Charging electrons in the sub-shell uses the following sequence:  

<em>1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d¹⁰, 4p⁶, 5s², 4d¹⁰, 5p⁶, 6s², etc.  </em>

The element is Oxgen, with symbol O, and :

the atomic number=8=number of electron

the atomic mass=16

The electron configuration based on the number of electrons(for Oxygen=8), so the configuration :

\tt _8^{16}O:1s^22s^22p^4 or we can write with noble gas [He] 2s²2p⁴

3 0
2 years ago
Which item is the weakest acid on the chart?
serious [3.7K]
ANSWER: Milk

Explanation: Take this chart from 1-6 are acids from 8-14 those are bases
Now bases are like cleaning products and stuff
While acids are like lemons and other stuff
If you look at milk level which is 6.5 It is an acid but its A lot closer to neutral Than Other acids

3 0
2 years ago
This formula equation is unbalanced.
Afina-wow [57]
The balanced equation will read:

Pb(NO3)2 (aq) + LiSO4 (aq) ➡️ PbSO4 (s) + 2️⃣LiNO3 (aq)

have a great day!!
6 0
3 years ago
Read 2 more answers
Convert 100 m/s into miles per hour. 100 m/s =
faust18 [17]

The answer is 100 m/s = 223.694.            %100(not part of question)

6 0
3 years ago
8. Given the balanced chemical equation Br2 + 2 NaI -&gt; 2 NaBr + I2 How many moles of sodium bromide (NaBr) could be produced
bezimeni [28]

Since we are already given the balanced equation:


Br_{2}+2NaI → NaBr+I_{2}


We can derive the molar ratios as: 1:2:1:1


That being said, we are given 0.172 moles of bromine (Br_{2}), so it has a ratio of 1:1 with sodium bromide (NaBr).


So we can take from that ratio, that when 0.172 moles of bromine are used, we are, in turn, going to get 0.172 moles of sodium bromide produced.

4 0
3 years ago
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