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Anarel [89]
3 years ago
12

What are the properties of elements related to?

Chemistry
1 answer:
balu736 [363]3 years ago
3 0
The answer you are looking for is A. the average atomic mass hope this helped have a nice day :)
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How many oxygen atoms are in one molecule of baking soda
8_murik_8 [283]

NaHCO3 = No. of atoms are 1 sodium + 1 Hydrogen + 1 carbon + 3 oxygens = 6 atoms per molecule.

so a total of 3 oxygens

4 0
3 years ago
Colligative properties depend upon the ____. Select one: a. nature of the solute b. nature of the solvent c. number of solute pa
Flauer [41]
The correct answer is C. Colligative properties only depend upon the number of solute particles in a solution but not on the identity or nature of the solute and solvent particles. I hope this anwers your question. 
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3 years ago
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The layer of the Earth that the lithospheric plates move on top of is called the
ikadub [295]

Answer:

A. Lithosphere

4 0
3 years ago
Suppose 40.8g of copper(II) acetate is dissolved in 200.mL of a 0.70 M aqueous solution of sodium chromate.
Contact [7]

Answer:

0.42 M

Explanation:

The reaction that takes place is:

  • Cu(CH₃COO)₂ + Na₂CrO₄ → Cu(CrO₄) + 2Na(CH₃COO)

First we <u>calculate the moles of Na₂CrO₄</u>, using the <em>given volume and concentration</em>:

(200 mL = 0.200L)

  • 0.70 M * 0.200 L = 0.14 moles Na₂CrO₄

Now we <u>calculate the moles of Cu(CH₃COO)₂</u>, using its <em>molar mass</em>:

  • 40.8 g ÷ 181.63 g/mol = 0.224 mol Cu(CH₃COO)₂

Because the molar ratio of Cu(CH₃COO)₂ and Na₂CrO₄ is 1:1, we can directly <u>substract the reacting moles of Na₂CrO₄ from the added moles of Cu(CH₃COO)₂</u>:

  • 0.224 mol - 0.14 mol = 0.085 mol

Finally we <u>calculate the resulting molarity</u> of Cu⁺², from the <em>excess </em>cations remaining:

  • 0.085 mol / 0.200 L = 0.42 M

4 0
3 years ago
What determines the velocity of an object
maxonik [38]

Answer:

the direction of the object

Explanation:

4 0
3 years ago
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