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Delicious77 [7]
2 years ago
12

Cho biết X, Y (ZX < ZY) là hai nguyên tố mà lớp vỏ nguyên tử có electron cuối cùng điền vào phân lớp 4s.

Chemistry
1 answer:
deff fn [24]2 years ago
4 0
Can you please translate it to english?
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Which of the following is the correct formula for copper (I) sulfate trihydrate? CuSO4 · 3H2O
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It is either the 3rd answer or the 4th answer. Both are correct ways to write hydrates, but I was taught the 4th way. Just make sure this answer matches the format of the examples your teacher gave you.
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At 1.75 atm, a sample of gas takes up 2.88L. If the pressure in the gas is increased to 2.25 atm, what will the new volume be
yarga [219]

Explanation:

P1V1= P2V2

V2= P1V1/P2

= 1.75*2.88/2.25 = 2.24

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3 years ago
If the reactants of a reaction have one s and four of atoms what will the products have
DedPeter [7]

Answer:

The products will also have one S and four O atoms.

Explanation:

According to Law of Conservation of Matter, " Matter can neither be created nor destroyed, but it can be changed from one form into another".

7 0
2 years ago
Help asap, testining
gayaneshka [121]

Answer:

The answer is 10 degrees celsius

Explanation:

4 0
3 years ago
3. In the formation of acid rain, sulfur dioxide reacts with oxygen and water in the air to form sulfuric acid. Write a balanced
Andreyy89

Answer:

SO₂ + 0.5 O₂ + H₂O → H₂SO₄

3.83 g

Explanation:

In the formation of acid rain, sulfur dioxide reacts with oxygen and water in the air to form sulfuric acid. The balanced chemical equation is:

SO₂ + 0.5 O₂ + H₂O → H₂SO₄

The molar mass of SO₂ is 64.07 g/mol. The moles of SO₂ corresponding to 2.50 g are:

2.50 g × (1 mol/64.07 g) = 0.0390 mol

The molar ratio of SO₂ to H₂SO₄ is 1:1. The moles of H₂SO₄ formed are 0.0390 moles.

The molar mass of H₂SO₄ is 98.08 g/mol. The mass of H₂SO₄ is:

0.0390 mol × 98.08 g/mol = 3.83 g

4 0
3 years ago
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