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cupoosta [38]
3 years ago
12

I WILL GIVE BRAINLYEST 40+ POINTS

Chemistry
1 answer:
Talja [164]3 years ago
7 0

Answer:

The correct answer is A.

Explanation:

Helium's Atomic Model has 2 Protons and 2 Neutrons, and on the outside it has 2 electrons circling around it.

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3. If 90.0 grams of barium chloride react with sulfuric acid, how many
PtichkaEL [24]

Answer:

The answer to your question is 100.8 g

Explanation:

Data

  mass of Barium chloride = 90 g

  mass of Barium sulfate = ?

Balanced chemical reaction

    BaCl₂  +  H₂SO₄   ⇒    BaSO₄  +  2HCl

Process

1.- Calculate the molar mass of BaCl₂ and BaSO₄

BaCl₂ = 137.3 + (2 x 35.5) = 208.3g

BaSO₄ = 137.3 + 32 + (16 x 4) = 233.3g

2.- Use proportions to find the mass of BaSO₄

              208.3 g of BaCl₂ --------------------- 233.3 g of BaSO₄

                90 g of BaCl₂    ---------------------   x

                              x = (90 x 233.3) / 208.3

                              x = 20997/ 208.3

                              x = 100.8 g

3.- Conclusion

There will be produced 100.8 g of BaSO₄          

4 0
2 years ago
When your heart doesn't know what it wants.. what do you do?
DENIUS [597]
Follow your nose to the fruity taste of chows recharge the heart then follow your heart good luck my friend

3 0
3 years ago
Which element of the periodic table is named after the moon
Troyanec [42]

Answer:

The answer to your question is Selenium

Explanation:

The origin of the names of the elements comes from different origins

For example

Sanskrit words. 14 elements have roots from this language

Planets, 4 elements took their names from the planets.

Greek, 42 elements took their names from these languages

The name of Selenium comes from the greek that means moon.

8 0
3 years ago
During a chemical change items are lost or gained to make new substance true or false​
Otrada [13]

Answer:

If you meant Atoms then the answer is false

5 0
3 years ago
What is Science?
DENIUS [597]

Answer:

jesus

Explanation:

Jesus is always the answer LOL

3 0
2 years ago
Read 2 more answers
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