All categories

2 years ago

The half-life of gold-195m is approximately 30.5 seconds.

1 answer:

6 0

The amount of the 12 grams sample of gold-195m having a half-life of 30.5 s that would remain after 41 s is 4.726 g

<h3>How to determine the number of half-lives </h3>

Half-life (t½) = 30.5 s
Time (t) = 41 s

Number of half-lives (n) =?

n = t / t½

n = 41 / 30.5

n = 82/61

<h3>How to determine the amount remaining </h3>

Original amount (N₀) = 12 g
Number of half-lives (n) = 82/61

Amount remaining (N) =?

N = N₀ / 2ⁿ

N = 12 / 2^(82/61)

N = 4.726 g

Learn more about half life:

brainly.com/question/26374513

You might be interested in

Having trouble with this problem. Please help

Airida [17]

Answer:

A) 33 3/4°

Step-by-step explanation:

The supplement of an angle is the difference between 180° and the angle measure:

supplement of 146 1/4° = 180° -(146 1/4)°

= (180° -146°) -1/4° = 34° -1/4°

= 33 3/4° . . . . supplement of the given angle

6 0

3 years ago

Write an equivalent expression for 4.5x(2 - 6)

ki77a [65]

$4.5x(2 - 6) \\ \\ 1. \: 4.5x \times - 4 \\ 2. \: = - 18x$

5 0

3 years ago

Read 2 more answers

Which of the following is the slope of the line<br> A. -3<br> B. 1/3<br> C. -1/3<br> D. 3

Crazy boy [7]

Ask if explanation needed :)

6 0

3 years ago

Please simplify this please it’s due really soon!

iren2701 [21]

Step-by-step explanation:

$\frac{ {13}^{6} \div {13}^{8} \times {13}^{ - 4} }{ {13}^{ - 2} }$

You need to remember the properties of exponents: multiplication adds the exponents, division subtracts the exponents.

If you multiply two powers with the same base, the result will be the base to the sum of the powers.

If you divide two powers with the same base, the result will be the base to the difference of the powers.

In your case you will this:

${13}^{6 - 8 + ( - 4) - ( - 2)}$

That is:

${13}^{ - 4}$

Or:

$\frac{1}{ {13}^{4} }$

7 0

4 years ago

What is the solution of 4 startroot 5 x 66 endroot = x 10? x = –10 x = 3 x = –10 or x = 3 no solution

eduard

Answer:

x=3

Step-by-step explanation:

....................

4 0

2 years ago