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
pshichka [43]
3 years ago
10

How much of a radioactive parent isotope will remain after three half-lives have passed?

Chemistry
1 answer:
Leona [35]3 years ago
6 0
After 1 half life, 1/2
After 2 half lives, 1/4
After 3 half lives, 1/8
You might be interested in
What's a vacuum exactly
stealth61 [152]

Answer:

Vacuum: space in which there is no matter or in which the pressure is so low that any particles in the space do not affect any processes being carried on there It is a condition well below normal atmospheric pressure and is measured in units of pressure (the pascal).-the internet gave me this answer so..

Explanation:

hope this helps :)

7 0
2 years ago
According to the principle of superposition, which statement is true about the sediment layers shown here?Required to answer. Si
podryga [215]

if layer 4 is at the very bottom it would be c

3 0
2 years ago
How much iodine (I2), in grams, should be added to water to produce 2.5L of solution with a molarity of 0.56M?
denis-greek [22]

Molarity=Moles of solute/Volume of solution in L

So

  • 0.56M=moles/2.5L
  • moles=0.56(2.5)
  • moles of Iodine=1.4mol

Mads of Iodine

  • Moles(Molar mass)
  • 1.4(126.9)
  • 177.66g
7 0
1 year ago
a water sample is found to have a cl- content of 100ppm as nacl what is the concentration of chloride in moles per liter
ladessa [460]

Answer:

The concentration of chloride ion is 2.82\times10^{-3}\;mol/L

Explanation:

We know that 1 ppm is equal to 1 mg/L.

So, the Cl^- content 100 ppm suggests the presence of 100 mg of Cl^- in 1 L of solution.

The molar mass of Cl^- is equal to the molar mass of Cl atom as the mass of the excess electron in Cl^- is negligible as compared to the mass of Cl atom.

So, the molar mass of Cl^- is 35.453 g/mol.

Number of moles = (Mass)/(Molar mass)

Hence, the number of moles (N) of Cl^- present in 100 mg (0.100 g) of Cl^- is calculated as shown below:

N=\frac{0.100\;g}{35.453\;g/mol}=2.82\times 10^{-3}\;mol

So, there is 2.82\times10^{-3}\;mol of Cl^- present in 1 L of solution.

5 0
3 years ago
What are 6 abiotic factos from finding nemo?
julsineya [31]

Abiotic are nonliving things. So just name 6 nonliving things in finding nemo
8 0
3 years ago
Other questions:
  • What is the result of rocks poor ability to transmit heat
    5·1 answer
  • In bohr's atomic theory when electron moves from one energy level to another energy level closer to the nucleus:
    13·1 answer
  • In which biome would you find the main types of plant life to be grasses and nonwoody plants
    13·1 answer
  • When a chemist collects hydrogen gas over water, she ends up with a mixture of hydrogen and water vapor in her collecting bottle
    10·1 answer
  • I need help with question 39 please
    6·1 answer
  • Calculate the pOH of a solution if the concentration of hydroxide ions (OH-) is 1.9 x 10-5M?
    14·1 answer
  • Pleaseeee help me only 29 and 30
    14·1 answer
  • Do you think that it is possible for that viruses can grow and respond to changes in their environment? Why or why not?
    9·2 answers
  • when 1 mol of glucose is burned, 2802.5kj of energy is released. calculate rhe quantity of energy released to a person by eating
    13·1 answer
  • The combination of sucrose, sucrase, and water produces sucrase, glucose, and fructose. Which component of the reaction is the s
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!