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xxTIMURxx [149]
3 years ago
11

Plz answer quick

Chemistry
2 answers:
SCORPION-xisa [38]3 years ago
8 0
It’s baron I got it right on edg
meriva3 years ago
3 0

Answer:

It is boron

Explanation:

If there are more questions like this, search something like this on Google

"Does ____ have three valence electrons?"

It should be right there

Hope this helps!

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IgorC [24]
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3 years ago
5. Calculate the mass in grams of 1.88 x 1024 particles of CO2?
Oksi-84 [34.3K]

Answer:

137.44g CO2

Explanation:

(1.88 × 10²⁴ / 6.02 × 10²³) × (16 + 16 + 12.01) = 137.44g

8 0
3 years ago
Please help super emergency!!
atroni [7]
1) we can calculate the molecular weight of H₃PO₄
atomic mass  (H)=1 amu
atomic mass (P)=31 amu
atomic mass (O)=16 amu 

molecular weight (H₃PO₄)=3(1)+31+4(16)=98 amu.

1 mol (H₃PO₄)=98 g
1 mol= 6.022 * 10²³ molecules.

2) we calculate the mass of 4.00*10²³ molecules.

98 g-------------------6.022*10²³ molecules
x------------------------4.00*10²³ molecules

x=(98 g * 4.00*10²³ molecules) / 6.022*10²³ molecules≈65 g

Answer: 65 g
5 0
4 years ago
Why do we need an isolated system for the law of conservation of mass to be true?
Alex_Xolod [135]

Answer:

The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

7 0
3 years ago
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According to kinetic molecular theory, there are no forces of attraction between the particles of a liquid. TRUE FALSE
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3 years ago
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