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KonstantinChe [14]
3 years ago
12

Zinc-64 undergoes beta decay as shown:

Chemistry
1 answer:
IrinaK [193]3 years ago
7 0

Symbol for X : \tt _{31}^{64}Ga

<h3>Further explanation </h3>

Radioactivity is the process of unstable isotopes to stable isotopes by decay, by emitting certain particles,  

  • alpha α particles ₂He⁴
  • beta β ₋₁e⁰ particles
  • gamma particles ₀γ⁰
  • positron particles ₁e⁰
  • neutron ₀n¹

Zinc-64 undergoes beta decay, so :

The atomic number will increase by +1, and the mass number will remain the same

So that the atomic number:

30 + 1 = 31

The element with atomic number 31 is Gallium

Reaction

\tt _{30}^{64}Zn\Rightarrow _{31}^{64}Ga+~_{-1}^0\beta

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satela [25.4K]

Answer:

Molarity =  0.7 M

Explanation:

Given data:

Volume of KCl = 20 mL ( 0.02 L)

Molarity = 3.5 M

Final volume = 100 mL (0.1 L)

Molarity in 100 mL = ?

Solution:

Molarity = number of moles of solute / volume in litter.

First of all we will determine the number of moles of KCl available.

Number of moles = molarity × volume in litter

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Number of moles = 0.07 mol

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Express the following in regular notation:
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What is the overall charge of a Aluminum atom that loses 3 electrons​
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g Ammonium nitrate was the oxidizing agent used that damaged the New York World Trade Center in 1993 and the Federal Building in
Cloud [144]

Answer:  51.3\times 10^3 kJ

Explanation:

The thermochemical equation for decomposition of ammonium nitrate is:

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\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

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