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
Vedmedyk [2.9K]
4 years ago
8

Please help, what does this mean?

Chemistry
1 answer:
klasskru [66]4 years ago
3 0

Answer:

A. 206 82Pb.

B. 214 82Pb.

C. 210 82Pb.

Explanation:

From the diagram given in question above, we can see that the parent nucleus is undergoing alpha decay.

This implies that the daughter nuclei obtained will have a decrease of 4 in the mass number and a decrease of 2 in the atomic number.

Please see attached photo on how to solve the question.

You might be interested in
Select the correct answer. How does an atom become a positively charged ion? A. By gaining one or more electrons B. By gaining o
ser-zykov [4K]

C. By losing one or more electrons

6 0
3 years ago
Read 2 more answers
25. Which is an irreversible process?
Nesterboy [21]

The answer is 1) mixing of two gases by diffusion.

Once 2 gases are mixed by diffusion, they cannot be obtained from the mixture of gases. Hence, it is considered to be an irreversible process.

3 0
2 years ago
Read 2 more answers
SOMEONE PLEASE HELP ME ASAP PLEASE!!!!​
emmainna [20.7K]

Answer:

(215 torr)(51 mL)=("x" torr)(18,500 mL) x = O.593 torr

5 0
3 years ago
Which process is an oxidation?
Zarrin [17]
<span>The problem has to do with oxidation states of the matter. The oxidation state of oxygen will always be -2 with the exception of peroxides which will have a state of -1. The overall balanced state of chemical compounds will be 0, so the oxidation state of Mn in MnO2 will be +4. The oxidation state of MnO4- will then be +7 to balance out to the negative one charge. The state change from +4 to +7 is 3, thus three electrons have to be lost in order for this to happen; a loss of a charge of -3 results in an increase of charge of 3. Oxidation is always the process of 'losing' electrons.

</span><span>E] MnO2(s) MnO4-(aq</span>
4 0
3 years ago
Which of these is NOT a type of chemical reaction?
nikdorinn [45]
The mole because it is fhdjdbksbdkdvdixhvd
8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the meaning of the euphemism, "lose your lunch"?
    6·2 answers
  • Molecules that have the same chemical formula (same numbers of each atom) but different three-dimensional shapes are called ____
    14·1 answer
  • How many atoms are in 3NaOH
    9·1 answer
  • How many atoms of N are in 137.0 grams of N2O3?
    10·2 answers
  • Mole Introduction<br><br> 1. How many cents are in one mole of pennies?
    6·1 answer
  • How does the moon move?
    10·1 answer
  • Which of the following statements best describes an animal impacting the hydrologic cycle?
    15·1 answer
  • 2H2 + O2 → 2H2O
    12·1 answer
  • Plz answer question 9 in the picture... with an explanation
    9·2 answers
  • Which project provided evidence for the accelerated expansion of the universe?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!