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Snezhnost [94]
3 years ago
5

Which represents the balanced nuclear equation for the beta minus decay of Co-60?​

Chemistry
1 answer:
laiz [17]3 years ago
3 0
<h3>The balanced nuclear equation</h3>

₂₇⁶⁰Co ⇒ ₂₈⁶⁰Ni + ₋₁⁰e

<h3>Further explanation</h3>

Given

the beta minus decay of Co-60

Required

The reaction

Solution

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

Beta minus : ₋₁e⁰ particles

so the reaction :

Co-60 ⇒ X + beta minus

₂₇⁶⁰Co ⇒ X + ₋₁⁰e

In a nuclear decay reaction, the mass number and atomic number of the left (reactant / decayed) and right (product) sides will be the same

mass number = constant = 60

atomic number = 27 - (- 1) = 28

So the element X = ₂₈⁶⁰Ni

₂₇⁶⁰Co ⇒ ₂₈⁶⁰Ni + ₋₁⁰e

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State with reasons, whether sulphur dioxide is acting as an oxidizing agent or a reducing agent in each of the following reactio
evablogger [386]

Answer:

A) oxidizing agent is SO2

B) NaClO is the oxidizing agent

Explanation:

A) This is a redox reaction in which oxidation and reduction occur simultaneously.

Thus, in 2H2S(g) + SO2(g) -> 2H2O(l) + 3S(s);

H2S is reduced as follows;

H2S → S + 2H+ + 2e−

We can see that SO2 has been reduced while H2S gets oxidized since it has changed state from - 2 to 0 . Thus sulphur dioxide is the oxidizing agent.

B) SO2(g) + H2O(l) + NaClO(aq) -> NaCl(aq) + H2SO4(aq)

In this, SO2 undergoes oxidation and NaClO is the oxidizing agent

4 0
3 years ago
The residue of coal decomposition that is used in the manufacture of steel is called: 1. coal gas 2. coke 3. coal tar
netineya [11]
The residue of coal decomposition in the manufacture of steel is 
3 0
4 years ago
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Cl2 reacts with the element Sr to form an ionic compound. Based on periodic properties, identify a molecule, X2, that is likely
Leto [7]

Answer:

The bromine molecule, Br2 will likely react with Sr in a similar way to chlorine molecule, Cl2.

Explanation:

Chlorine belongs to group 7 of the periodic table. Elements in this group are known as halogens. Its molecule has the formula Cl2. The next element in the group after chlorine is bromine. Its molecule has a formula Br2. It has similar properties as chlorine, therefore, it would react with Strontium in a similar way to chlorine.

Elements belonging to the same group of the periodic the table have similar chemical properties as they contain the same number of valence electrons. Chlorine and Bromine both belong to group 7 of the periodic table and each have seven valence electrons. They both react with metals to form salts even though reaction with chlorine is more vigorous as it is more reactive than bromine. They both form negatively-charged ions with a charge of -1.

Reaction of Strontium with the halogens:

With chlorine: Sr + Cl2 ---> SrCl2

With bromine: Sr + Br2 ---> SrBr2

The salts formed are both crystalline salts with high melting and boiling points.

3 0
4 years ago
The side chain of histidine has a pKa of about 6. What percent of histidine side chains would be deprotonated at pH 7.5
Setler [38]

The percent of histidine side chains would be deprotonated at pH 7.5  is 5.77 %.

<h3>What is pKa?</h3>

The term pKa refers to the negative logarithm of the acid dissociation constant (Ka). The pH is the negative logarithm of the hydrogen ion concentration.

Hence;

Ka = Antilog (-6) =1 * 10^-6

[H^+] = Antilog (-7.5) = 3 * 10^-8 M

We now have to use the formula;

α = \sqrt{} \frac{Ka}{[H^+] }

α = \sqrt{} \frac{ 1 *10^-6}{3 *10^-8  }

α = 5.77 %

Hence, the percent of histidine side chains would be deprotonated at pH 7.5  is 5.77 %.

Learn more about percent dissociation: brainly.com/question/12273293

3 0
3 years ago
Plz help me with these 4 questions!! Need right correct answers!! Thxx!!
lubasha [3.4K]

number one: when substances like rock and minerals are being physically broken down, its called weathering.

Number two: when particles are carried away to another location exp " a river carrying rocks to an ocean" that's called deposition

Number three: this would also be weathering because it is physically being worn down

Number four: would be a topographic map, because theses maps use lines to study elevation instead of color

3 0
3 years ago
Read 2 more answers
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