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mihalych1998 [28]
2 years ago
4

Compare the electron configurations of hydrogen, lithium, and sodium. Why do you think these elements are grouped in the same fa

mily?
Chemistry
1 answer:
sesenic [268]2 years ago
6 0

Answer:

they all have the same amount if valance electrons

Explanation:

hydrogen has an electron configuration of 1.

lithium has 2-1

sodium has 2-8-1

their valance electrons on the outer shell all have 1 electron, which is why they are grouped in the same family

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What is the total mass of a mixture of 3.50x10^22 formula units na2so4, 0.500 mol h2o, and 7.23 g agcl?
Crazy boy [7]
Answer is: mass of the mixture is 24,47 g.
1) N(Na₂SO₄) = 3,5·10²².
n(Na₂SO₄) = 3,5·10²² ÷ 6·10²³ 1/mol.
n(Na₂SO₄) = 0,058 mol.
m(Na₂SO₄) = 0,058 mol · 142 g/mol.
m(Na₂SO₄) = 8,24 g.
2) n(H₂O) = 0,500 mol.
m(H₂O) = 0,5 mol · 18 g/mol.
m(H₂O) = 9 g.
3) m(total) = 8,24 g + 9 g + 7,23 g.
m(total) = 24,47 g.
n - amount of substance.
5 0
2 years ago
Determine whether the statement is true or false, and why? “Climate change could cause many habitats to be destroyed, leading to
77julia77 [94]

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False. It should read that both plant and animal species are in danger of extinction, and climate change can destroy habitats.

Explanation:

8 0
2 years ago
If you perform the experiment described in investigation #15 by mixing 10 g of glue with 13 g of water and 8 g of sodium borate
Phantasy [73]

10 g of glue with 13 g of water ,

Mass ratio of the material can be calculated as:    

\frac{Mass of glue}{Mass of glue + Mass of water}  

\frac{10 g}{10 g + 13 g }  

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8 g of sodium borate suspended in 11 g of water, mass ratio can be calculated as:

\frac{Mass of sodium borate}{Mass of sodium borate + Mass of water}  

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3 0
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Avanti works in a bookstore. She has four books and is going to place them in two stacks. The diagram above shows the books befo
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Explanation:

3 0
1 year ago
What is the mass of 1.82 moles of lithium carbonate?
Svetlanka [38]
You can view more details on each measurement unit: molecular weight of Lithium Carbonate or grams The molecular formula for Lithium Carbonate is Li2CO3. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Lithium Carbonate, or 73.8909 grams.
5 0
2 years ago
Read 2 more answers
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