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
Irina18 [472]
2 years ago
5

If there were 10 grams of a radioactive isotope, how much of the sample would be left after 1 half-life? How much after 2 half-l

ives?
Chemistry
1 answer:
Vikentia [17]2 years ago
3 0
One half-life: 5 grams
Two half-lives: 2.5 grams
You might be interested in
Jada Peterson
barxatty [35]

Answer: A

Explanation:

4 0
2 years ago
What kind of bond is formed when electrons are gained or lost ?
lisov135 [29]
C.) Ionic bond is formed between that...
3 0
3 years ago
The molarity of a solution prepared by dissolving 4.11 g of NaI in enough water to prepare 312 mL of solution is
Dimas [21]

Answer:

The correct answer is 8.79 × 10⁻² M.

Explanation:

Based on the given information, the mass of NaI given is 4.11 grams. The molecular mass of NaI is 149.89 gram per mole. The moles of NaI can be determined by using the formula,

No. of moles of NaI = Weight of NaI/ Molecular mass

= 4.11 / 149.89

= 0.027420

The vol. of the solution given is 312 ml or 0.312 L

The molarity can be determined by using the formula,

Molarity = No. of moles/ Volume of the solution in L

= 0.027420/0.312

= 0.0879 M or 8.79 × 10⁻² M

6 0
2 years ago
Determine whether or not the equation below is balanced. If it isn’t balanced, write the balanced form. Also, identify the react
Natasha_Volkova [10]

Answer:

Explanation:

There's no equation attached. What equation is it?

5 0
3 years ago
Read 2 more answers
What characteristics does the serval have that make it well-suited to life on the savanna ?
nika2105 [10]
It is very camouflaged this way it will survive longer then most other animals

5 0
3 years ago
Read 2 more answers
Other questions:
  • Which is an element? A. salt B. carbon C. salt water D. carbon dioxide
    5·2 answers
  • 6 types of asexual reproduction
    14·1 answer
  • Instructions: Select the correct answer.
    12·1 answer
  • Which is one way that topographic maps are different from other maps?
    12·2 answers
  • In an experiment, two unknown compounds (one an alcohol and the other an ether) of equal molecular mass were dissolved in water.
    9·2 answers
  • What is the volume, in liters, of 4.00 moles of methane gas, CH4, at 13 ∘C and 1.20 atm?
    15·1 answer
  • Plz help with Chemistry Quiz I’ll mark brainliest
    7·1 answer
  • ______ use energy from their enviornment to make food .
    14·2 answers
  • How does an ecosystem benefit when leaves fall from a tree and decompose on the soil?
    11·2 answers
  • I need help with this question
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!