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AnnyKZ [126]
2 years ago
12

اريد اجابتهم الذي بصوره وشكرا

Chemistry
1 answer:
11Alexandr11 [23.1K]2 years ago
5 0

Answer:

ummm is the language urdu?????

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5 0
4 years ago
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A compound has the percent composition 47.40% Pd, 28.50% O, 21.40% C, and 2.69% H. Based on this information, which molecular fo
Helga [31]

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Pd(O₂CCH₃)₂

Explanation

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3 years ago
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Based on the scientific sources you found, did you think one person’s points were more scientifically valid than the other’s
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An element's atomic number is 87. how many protons would an atom of this element have
andreev551 [17]
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3 years ago
What is the mass in grams of 0.280 mole sample of sodium hydroxide NaOH​
vivado [14]

Answer:

The mass of 0.280 mole sample of sodium hydroxide NaOH​ is 11.2 grams.

Explanation:

To know the mass in grams of 0.280 moles of sample of sodium hydroxide NaOH, you must know the molar mass of the compound, that is, the mass of one mole of a substance, which can be an element or a compound.

So you know:

  • Na: 23 g/mole
  • O: 16 g/mole
  • H: 1 g/mole

So, the molar mass of NaOH is:

NaOH= 23 g/mole + 16 g/mole+ 1 g/mole= 40 g/mole

Then the following rule of three can be applied: if in 1 mole of sodium hydroxide there are 40 grams, in 0.280 moles how much mass is there?

mass=\frac{0.28 moles*40 grams}{1 mole}

mass= 11.2 grams

<u><em>The mass of 0.280 mole sample of sodium hydroxide NaOH​ is 11.2 grams.</em></u>

4 0
3 years ago
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