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alisha [4.7K]
3 years ago
15

What is the approximate mass of iron

Chemistry
1 answer:
german3 years ago
3 0

Answer:

55.845 u

Explanation:

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The formula for acetic acid is CH3COOH. Seana wants to know how many oxygen atoms are in 0.12 moles of acetic acid. O a. 1x 10^2
MA_775_DIABLO [31]

Answer:

c. 1.4 x 10²³ oxygen atoms

Explanation:

The number of oxygen atoms in one molecule of CH₃COOH is 2.

Avogadro's constant relates the number of molecules in one mole:

6.022 × 10²³ mol⁻¹

Thus, the number of oxygen atoms in one molecule of acetic acid can be converted to the number of oxygen atoms in one mole of acetic acid:

(2 oxygen atoms / molecule)(6.022 × 10²³ molecule / mol) = 1.204 x 10²⁴ atoms per mole

Finally, the number of oxygen atoms in 0.12 moles of acetic acid are calculated:

(1.204 x 10²⁴ atoms / mol)(0.12 mol) = 1.4 x 10²³ atoms/mol

6 0
3 years ago
Which of these are components of DNA? Check all that apply.
Kipish [7]

Answer:

  1. deoxyribose sugar molecules.
  2. adenine.
  3. cytosine.
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  5. phosphate molecules.

Explanation:

Hope it helps.

6 0
4 years ago
What must occur in order for a chemical reaction to be specifically classified as endothermic instead of exothermic?
Alla [95]

Answer:  B- Chemical bonds are formed. Energy is released in the form of heat.

Explanation: I hoped that helped !

6 0
3 years ago
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Why do people remove entire forests ?
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Answer:

deforestation not only removes vegetation that is important for removing carbon dioxide from the air.

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What causes polar bonds
yulyashka [42]

Answer:

Bonds are polar when one element in a compound is more electronegative than the other. This creates a dipole in the molecule where one end of the molecule is partially positive and one end is partially negative

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