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Alex Ar [27]
3 years ago
13

Write a balanced nuclear equation for the beta decay of protactinium

Chemistry
1 answer:
PSYCHO15rus [73]3 years ago
7 0
_{91}^{231}Pa --\ \textgreater \  _{92}^{231}U + _{-1}^{0}e
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How is a compound different from mixtures
borishaifa [10]

Answer: a compound is a substance that is made up of more than one type of atoms bonded together, mixtures are a mix of multiple elements or compounds which haven't bonded together.  

Explanation:

8 0
3 years ago
There are billions of stars in the known universe. None of them seem to be as bright as the Sun. Which statement gives the best
gogolik [260]

Answer:

The answer is D. The Sun is the closest star to Earth and so it seems brighter than distant stars that have much greater absolute brightness.

Explanation: Stars like red super giants like beetleguise are way brighter and bigger than the sun, but the sun is closest to the earth. It is only in its main sequence stage but seems bright because of its short distance from the sun( 93 million miles).

6 0
3 years ago
Balance the following redox reaction in basic solution. Cl ⒠(aq) + MnO ⒠4 (aq) → Cl 2 (g) + MnO 2 (s)
FinnZ [79.3K]

6\; \text{Cl}^{-} \; (aq) + 2\; \text{MnO}_4^{-} \; (aq)  + 4 \; \text{H}_2 \text{O} \; (l) \to 3\; \text{Cl}_2 \; (g) + 2\; \text{MnO}_2 \; (s) + 8\; \text{OH}^{-} \; (aq)

<h3>Explanation</h3>
  • The oxidation state of the manganese atom \text{Mn} changes from +7 as in \text{MnO}_4^{-} to +4 as in \text{MnO}_2.
  • There are one \text{Mn} atom in each \text{MnO}_4 ion.
  • Reducing each \text{MnO}_4^{-} ion would thus consume three electrons.
  • Similarly, the oxidation state of the chlorine atom \text{Cl} changes from -1 as in \text{Cl}^{-} to 0 as in \text{Cl}_2.
  • It takes two \text{Cl}^{-} ions to produce one \text{Cl}_2 molecule.
  • Oxidizing every two \text{Cl}^{-} would thus produce one \text{Cl}_2 while releasing two electrons.

Three \text{Cl}_2 molecules contain six chlorine atoms. Three \text{Cl}_2 would thus correspond to six \text{Cl}^{-} ions.

Combining six \text{Cl}^{-}, two \text{MnO}_4^{-} ions, three \text{Cl}_2 ions, and two \text{MnO}_2 would balance the changes in oxidation state.

6\; \text{Cl}^{-} \; (aq) + 2\; \text{MnO}_4^{-} \; (aq)  \to 3\; \text{Cl}_2 \; (g) + 2\; \text{MnO}_2 \; (s) (NOT BALANCED)

Still, the product side lacks four oxygen atoms.

  • In an acidic environment, oxygen atoms would combine with protons to produce water.
  • In a basic environment (like this one,) there are nearly no protons for oxygen atoms to combine with. Oxygen atoms will likely combine with water to produce hydroxide ions.

Each oxygen atom combine with a water molecule to produce two hydroxide ions. Adding four water molecules and eight hydroxide ions would balance the equation.

5 0
3 years ago
Although the volume is set, the shape and structure of the cup is up to you (for example, your cup can be tall and skinny with a
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Answer:

It depends on what you would use it for.

Explanation:

It asks

5 0
3 years ago
How are acids and protons related? (1 point)
ch4aika [34]

Answer:

Explanation:

An acid is a substance that donates protons (in the Brønsted-Lowry definition) or accepts a pair of valence electrons to form a bond (in the Lewis definition). A base is a substance that can accept protons or donate a pair of valence electrons to form a bond. Bases can be thought of as the chemical opposite of acids

6 0
3 years ago
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