1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
jonny [76]
3 years ago
15

The decay of radium-226 produces an isotope

Chemistry
1 answer:
Korvikt [17]3 years ago
4 0

Answer:

 ²²⁶₈₈Ra → ²²²₈₆Rn + ⁴₂He  +⁰₀γ

Explanation:

This radioactive decay occurs when the unstable radium-226 atom wants to lose energy by emitting an alpha particle from its nucleus which is an helium nucleus with no electron. The radium (86) is transformed to radon(Rn) where the atomic number of radium (88) is reduced by two units into radon, Rn (86) and mass number reduced by 4 units.

The equation for the transformation is;

 ²²⁶₈₈Ra → ²²²₈₆Rn + ⁴₂He  +⁰₀γ  where

²²⁶₈₈Ra ---------radium-226

²²²₈₆Rn -------radon-222

⁴₂He ----------alpha particle

⁰₀γ ------------energy

Note that ⁴₂He can also be written as : ⁴₂∝

You might be interested in
In the water cycle, matter moves against the pull of gravity during
V125BC [204]
Evaporation and transpiration
5 0
3 years ago
Read 2 more answers
How are energy storage molecules affected if there is LESS carbon dioxide?
kipiarov [429]

Answer:

When there is less carbon (in the form of carbon dioxide) in abiotic matter, less carbon is available for producers making energy storage molecules. When there is more sunlight, producers can make more energy storage molecules from the carbon in carbon dioxide.

Hope this helps.

7 0
3 years ago
In the summer of 2016, the city of Columbus Dublin Road Water Treatment plan exceeded the regulatory level of nitrate, which is
Verizon [17]

Answer:

a) 10 mg NO_3^-/L

b) 1.61*10^{-4}mol NO_3^-/L

c) 2.26 mg N/L

Carbon: C=26.64 \frac{mg C}{L}

Explanation:

<u>Nitrate</u>

First of all, is important to know that:

1 ppm=1 mg/L

a) 10 ppm of nitrate (NO_3^-) is equal to 10 mg NO_3^-/L

b) The molecular weight of nitrate is 62 g NO_3^-/mol

10 mg NO_3^-/L=0.01 g NO_3^-/L

\frac{0.01 g NO_3^-/L}{62 g NO_3^-/mol}=1.61*10^{-4} mol NO_3^-/L

c) Nitrate has 14 mg of N per 62 mg of NO3

10 mg NO_3^-/L*\frac{14 mg N}{62 mg NO_3^-}=2.26 mg N/L

<u>Carbon</u>

Carbonate has 12 mg of C per 60 mg of CO_3^{-2}

Bicarbonate has 12 mg of C per 61 mg of HCO_3^{-}

C=24 \frac{mg CO_3^{-2}}{L}*\frac{12 mg C}{60 mg CO_3^{-2}}+111 \frac{mg HCO_3^{-}}{L}*\frac{12 mg C}{61 mg HCO_3^{-}}

C=26.64 \frac{mg C}{L}

8 0
3 years ago
Ethyl alcohol has a density of 0.80 g/mL. What is the volume of 44g of ethyl alcohol
Leya [2.2K]

Answer:

55mL

Explanation:

44g / 0.8g/mL = 55mL

4 0
2 years ago
Alkaline batteries adopted their name from the _____ that is present in the reactions at both the zinc anode and the MnO2 cathod
Paul [167]

Answer:

hydroxide ion

Explanation:

The alkaline battery got this name because it has an alkaline electrolyte of potassium hydroxide.

4 0
2 years ago
Other questions:
  • Which connects the ovary and uterus? sperm duct, fallopian tube, urethra, vagina
    15·2 answers
  • What is the volume of an object with the mass of 7.9 grams in the density of 1.28g/ml.
    15·1 answer
  • Predict the following chemical formula for a compound between aluminum and chlorine. AlCl3 Al3Cl Al2Cl3 Al3Cl2
    9·1 answer
  • The labels have fallen off three bottles containing powdered samples of metals; one contains zinc, one lead, and the other plati
    5·1 answer
  • Which of the following describes an energy transformation from chemical to electrical to light energy?
    12·2 answers
  • Why is light a wave?​
    13·1 answer
  • When you break an iron magnet into two pieces, you get ____.
    9·2 answers
  • How can we regain the hardness of water by adding lime?​
    15·2 answers
  • the two stages that take place during distillation are. a.evaporation is folloeed by condensation. b.condensation followed by ev
    6·1 answer
  • If 30 grams of KCl is dissolved at 10°C, how many additional grams would be needed to make the solution saturated at 60°C? * Cap
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!