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astra-53 [7]
2 years ago
7

From the list below, which items describe beta decay? Check all that apply. APEX

Chemistry
1 answer:
Troyanec [42]2 years ago
8 0

Answer:

C. A neutron turns into a proton

D. An electron is ejected from the nucleus

Explanation:

  • Beta decay is a type of the three major types of decays, others being alpha decay and gamma decay.
  • During a beta decay the atomic number of an atom increases by one while the mass number remains the same.
  • Beta decay may be classified as; an electron emission, positron emission and electron capture.
  • <em><u>During electron emission an energetic electron is emitted from the nucleus, together with an antineutrino and a neutron in the nucleus turns into a proton. </u></em>
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<u>Monounsaturated</u>

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Identify the FALSE statement. You could summarize our Solar System's development by saying that Choose one:
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D. It formed solely from atoms generated by the Big Bang.

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According to the following reaction, how many grams of nitrogen monoxide will be formed upon the complete reaction of 31.0 grams
Mumz [18]

23.227 grams of NO is formed upon the complete reaction of 31.0 grams of oxygen gas with excess ammonia.

Explanation:

The balanced chemical equation is:

4NH3 + 5O2 ⇒ 4NO + 6H20

Number of moles will be calculated.

31 grams of oxygen is given

atomic weight of oxygen gas i.e O2 = 32gm/mole

The molar mass of oxygen gas is 32 grams/mole which is equal to one mole of the molecule.

Number of moles (n) = \frac{mass}{atomic mass of one mole of the substance}

                             n=    \frac{31}{32}

                              n = 0.968 moles of oxygen are given for the reaction to occur.

From the balanced chemical equation it can be seen

5 moles of oxygen yielded 4 moles of NO

So, 0.968 moles of oxygen yield x moles of NO

\frac{4}{5} = \frac{x}{0.968 }

4 × 0.968 =5x

x = 0.774 moles of NO will be formed.

To calculate the mass of NO

mass= atomic mass x number of moles

atomic mass of NO is 30.01 grams/mole

putting the values in the formula:

mass = 30.01 x 0.774

          = 23.227 grams of NO is formed.

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3 years ago
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