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
inn [45]
3 years ago
13

2. Mercury-197 is used for kidney scans and has a half-life of 3 days. If 32 grams of

Chemistry
1 answer:
VLD [36.1K]3 years ago
8 0
<h3>Answer:</h3>

1 grams Mercury-197

<h3>Explanation:</h3>

From the question,

The radioisotope is Mercury-197

The half life of Mercury-197 is 3 days

Starting mass is 32 grams

Time taken is 15 days

We are required to calculate the final mass of the radioisotope after 15 days.

  • Note that, half life is the time taken by radioisotope to decay by half its original amount.
  • In this case, the half life of mercury-197 is 3 days, therefore, it takes three days for a mass of mercury-197 to decay by half its original mass.

Therefore, using the formula;

Final amount = Starting mass × (1/2)^n

where n is the number of half-lives (ratio of time to half life)

In our case, n = 15 days ÷ 3 days

                      = 5

Therefore;

Final mass = 32 g × (1/2)^5

                  = 32 g × 1/32

                 = 1 g

Therefore, the amount of mercury-197 in the shipment that will arrive is 1 g.

You might be interested in
What happens when molecular compounds melt?
Harman [31]
Molecules arranged in regular pattern changes into an irregular pattern
6 0
3 years ago
Read 2 more answers
I need helpppp plzzzz
Inessa [10]

Answer:

at first i would like to tell which class

Explanation:

125000 is the answwr

8 0
3 years ago
For which of the following is heat energy absorbed?
Dvinal [7]
Your answer is sublimation.

8 0
3 years ago
Read 2 more answers
A 25 kg rock is placed in a graduated cylinder with water.the volume of the fluid is 18.3ml.calculate the density of the rock in
ipn [44]

Answer:

=> 1366.120 g/mL.

Explanation:

To determine the formula to use in solving such a problem, you have to consider what you have been given.

We have;

mass (m)     = 25 Kg

Volume (v) = 18.3 mL.

From our question, we are to determine the density (rho) of the rock.

The formula:

p = \frac{m}{v}

First let's convert 25 Kg to g;

1 Kg    = 1000 g

25 Kg = ?

= \frac{25 × 1000}{1}

= 25000 g

Substitute the values into the formula:

p =  \frac{25000 g}{18.3 ml}

= 1366.120 g/mL.

Therefore, the density (rho) of the rock is  1366.120 g/mL.

8 0
2 years ago
What electrostatic attraction between____ forms an ionic bond?
lina2011 [118]
Between atoms (one metall and one non metall) form an ionic bond(NaCl)
4 0
3 years ago
Other questions:
  • Is the Hertzsprung-Russell diagram still a valid instrument in studying stars, given that it is over 100 years old?
    11·2 answers
  • What is the strongest type of intermolecular force present in nh2ch3?
    14·1 answer
  • Which of the following elements are characterized by having full outermost s and p
    15·1 answer
  • Under which conditions of temperature and pressure does a real gas behave most like an ideal gas
    11·1 answer
  • A naturally occurring, inorganic solid with an orderly crystalline structure and a definite chemical composition is _____.
    11·2 answers
  • How can I find the atomic number and atomic mass of an element?
    6·2 answers
  • The atomic number is the _____. atomic mass number of neutrons protons plus the neutrons number of protons
    12·2 answers
  • What is a material that does not allow heat to flow through easily?
    8·1 answer
  • (50-100 points!) write the unbalanced chemical equation for the following reaction: silicon dioxide + hydrofluoric acid produces
    10·2 answers
  • The delocalized cloud of π electrons in benzene is formed by the overlap of 6 ________ orbitals.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!