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
slava [35]
2 years ago
12

URGENT will give brainliest!!! Element X decays radioactively with a half life of 5 minutes. If there are 540 grams of Element X

, how long, to the nearest tenth of a minute, would it take the element to decay to 252 grams?
Mathematics
1 answer:
yKpoI14uk [10]2 years ago
7 0

Answer:

7.2 minutes

Step-by-step explanation:

The formula to find the time using the radioactive decay rate formula is given as:

t = t½ × In(Nt/No)/-In2

Where

t½ = half life = 6 minutes

No = Initial Amount = 260 grams

Nt = Amount after decay

= 113 grams

Hence:

t = 6 × In(113/260)/-In2

t = 7.2131331036796 minutes

Approximately = 7.2 minutes

You might be interested in
What is the answer to<br>3k-8+2k
Sati [7]
3k-8+2k 

(3k+2k)-8 

5k-8
5 0
3 years ago
Read 2 more answers
Is 7 to the 8th power times 7 equivalent to 7 to the the third power times 7 to third power equivalent?
Akimi4 [234]

Answer:

They are not equivalent.

Step-by-step explanation:

Before we solve the question, we need to know that from the laws of indices:

A^x x A^y = A^(x+y).

7 to the power of 8th power means 7^8

7^8 times 7 means 7^8 x 7. From the laws of indices we have 7^8 x 7 = 7^9.

7 to the power of 3rd power means 7^3

7^3 times 7 to the power of 3rd power means 7^3 x 7^3. From the laws of indices we have 7^3 x 7^3 = 7^6.

Obviously, 7^9 ≠ 7^3 therefore, they are not equivalent.

8 0
3 years ago
Writeca number sentence that shows an estimate each answer. ..69 +25
juin [17]
100 is an estamite of 69+25
5 0
3 years ago
Read 2 more answers
Select ALL the correct answers,
Alina [70]

Answer:

7,y,6, and x are the correct answers

Step-by-step explanation:

5 0
3 years ago
Is this relationship proportional or non proportional
mamaluj [8]
Non-proportional because all the dots are scattered I believe a proportional chart will have a straight line please correct me if I’m wrong :)
6 0
3 years ago
Other questions:
  • Someone please help
    15·1 answer
  • Generating equivalent expressions
    8·1 answer
  • Last year total sales for your grocery store were $10,342 with returns of $214 and discounts of $599.
    11·1 answer
  • The first side of a triangle is twice the length of the second side; the third side is 20 feet less than three times the second
    7·1 answer
  • Arrange the numbers from least to greatest<br><br> -0.43, -0.34, -4/9, -2/7, -0.434
    9·1 answer
  • A car gets 24 mpg. How many miles per liter is this
    9·2 answers
  • What is the probability that a student rides the bus given that they are in the 10th grade?
    11·1 answer
  • Hi can some one help Sandra is traveling 16 mph on her bicycle. After 2 hours, how far will she have traveled?
    6·1 answer
  • You and your friend are sharing three eighths of a bag of candy. How much of the bag will each of you get if you share it evenly
    11·2 answers
  • 1. find a formula for the marginal cost2. find c’(0). give units 3. graph the marginal cost function. Use your graph to find the
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!