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
iren2701 [21]
3 years ago
7

Uranium-234 decays to lead-214 through a series of alpha decays. Which of the following is the total number of alpha particles e

mitted in this decay series?
A. 1
B. 2
C. 5
D. 10
Chemistry
1 answer:
wariber [46]3 years ago
4 0
An alpha particle has a mass number of 4.
The mass number in the decay of uranium-234 to lead-214 decreases from 234 to 214, so by 20.
20 ÷ 4 = 5
5 alpha particles were emitted in this decay series. The answer is C.
You might be interested in
How many protons and neutrons are there in an atom of 3.K?
pickupchik [31]

Answer:

A: 11 protons and 21 neutrons

Explanation:

Hopefully this helps!

3 0
3 years ago
How plastic polymer types of compositions, surface hydrophobicity, crystallinity, porosity, size, shapes, aging or degree of wea
Andreas93 [3]

Explanation:

Scientific evidences abound of the occurrence of plastic pollution, from mega- to nano-sized plastics, in virtually all matrixes of the environment. Apart from the direct effects of plastics and microplastics pollution such as entanglement, inflammation of cells and gut blockage due to ingestion, plastics are also able to act as vectors of various chemical contaminants in the aquatic environment. This paper provides a review of the association of plastic additives with environmental microplastics, how the structure and composition of polymers influence sorption capacities and highlights some of the models that have been employed to interpret experimental data from recent sorption studies. The factors that influence the sorption of chemical contaminants such as the degree of crystallinity, surface weathering, and chemical properties of contaminants. and the implications of chemical sorption by plastics for the marine food web and human health are also discussed. It was however observed that most studies relied on pristine or artificially aged plastics rather than field plastic samples for studies on chemical sorption by plastics.

4 0
3 years ago
What is the difference between mass number and atomic number
krok68 [10]
Mass number<span> is the </span>number<span> of protons </span>and<span> neutrons in an atom.
</span>Atomic mass<span> is the average </span>mass<span> of all the isotopes of a certain type.</span>
7 0
3 years ago
Read 2 more answers
How many molecules of H2O are equivalent to 97.2g H2O
IgorLugansk [536]

como se denomina el proceso utilizado para descomponer el agua

6 0
3 years ago
What is the identity of a 100. g sample of metal that, upon absorbing 4680 J of heat, increases in temperature by 52.0°C?
krok68 [10]

The metal is aluminium

<u>Explanation:</u>

Given:

Heat, q = 4680 J

Mass, m = 100g = 0.1kg

ΔT = 52°C

sample = ?

We know:

q = mcΔT

On substituting the value we get:

4680 = 0.1 X c X(52)\\\\c = \frac{4680}{5.2} \\\\c = 900 J/Kg^oC

Thus, the metal is aluminium which has a specific heat capacity of 900 J/kg°C

3 0
3 years ago
Other questions:
  • 1.986 x 10^6 in standard notation? science question
    11·1 answer
  • Which statement about oxidation and reduction in a voltaic cell is true? Both oxidation and reduction occur at the anode.
    8·1 answer
  • The temperature –60 °C is higher than –60 °F.
    14·2 answers
  • How many moles are in 40.0g of CO​2
    15·2 answers
  • Write the balanced net ionic equation, including the phases, for the given reaction. A solution of Ba ( OH ) 2 and a solution of
    10·1 answer
  • Convert 180 g/mol to mole/L
    15·1 answer
  • Place the following events in sequence:
    6·2 answers
  • A man uses oars to paddle a boat across a lake, as shown below. The subsequent motion of the boat is best explained by Newton's
    12·2 answers
  • Please no links and round two decimal places
    15·1 answer
  • determine the strongest intermolecular force in pure samples of each of the following: a. h2o b. cf4 c. co2 d. ph3
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!