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zhannawk [14.2K]
3 years ago
12

How many moles are present in a 24.5 gram sample of K2Cr2O7?

Chemistry
1 answer:
attashe74 [19]3 years ago
6 0
The answer to this is solved through stochiometry: the answer is  this: 0.0833mol

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Nguyên tố X có hai đồng vị, đồng vị thứ nhất có số khối 35 chiếm 75%. Nguyên tử khối trung bình của X là 35,5. Đồng vị thứ hai c
BlackZzzverrR [31]

Answer:

C

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4 0
3 years ago
List 2 potential negative impacts that extraction of gold has on the environment?
mihalych1998 [28]
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3 years ago
How many moles of na+ are present in 343 ml of a 1.27 m solution of na2so4?
cricket20 [7]
Sodium sulfate, Na₂SO₄, is a strong electrolyte. It means that it dissociates into 2 Na⁺ ions and 1 SO₄⁻ ion when dissolved in water. So, for every 1 mole of Na₂SO₄, there is an equivalent amount of 2 mol Na⁺ ions. The solution is as follows:

Moles of Na⁺ = (1.27 mol Na₂SO₄/L)*(1 L/1000 mL)*(343 mL)*(2 mol Na⁺/1 mol Na₂SO₄)
<em>Moles of Na⁺ = 0.87 mol</em>
4 0
4 years ago
True or False (+2 Points Possible each): Write true if the statement is true. If false, replace
lesya [120]

Answer:

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4 0
3 years ago
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jasenka [17]

Answer:

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Explanation:

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7 0
3 years ago
Read 2 more answers
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