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
snow_tiger [21]
3 years ago
10

Iodine-131 is administered orally in the form of NaI(aq) as a treatment for thyroid cancer. The half-life of iodine-131 is 8.04

days. If you begin with 34.7 mg of this isotope, what mass remains after 8.52 days have passed
Chemistry
1 answer:
evablogger [386]3 years ago
8 0

Answer:

16.6 mg

Explanation:

Step 1: Calculate the rate constant (k) for Iodine-131 decay

We know the half-life is t1/2 = 8.04 day. We can calculate the rate constant using the following expression.

k = ln2 / t1/2 = ln2 / 8.04 day = 0.0862 day⁻¹

Step 2: Calculate the mass of iodine after 8.52 days

Iodine-131 decays following first-order kinetics. Given the initial mass (I₀ = 34.7 mg) and the time elapsed (t = 8.52 day), we can calculate the mass of iodine-131 using the following expression.

ln I = ln I₀ - k × t

ln I = ln 34.7 - 0.0862 day⁻¹ × 8.52 day

I = 16.6 mg

You might be interested in
What has the lowest density out of solids, liquids, and gas?
qaws [65]

Answer:

Explanation:

gas

8 0
3 years ago
Read 2 more answers
Please help!
valkas [14]
The answer is B . Brønsted-Lowry Acid/bases trade H+
3 0
3 years ago
Atoms of two different elements react with each other when they have?
kipiarov [429]

All other elements react with other elements to form compounds. In the special case where the reaction produces fixed numbers of the same types of atoms in exactly the same configuration, we say the elements have formed a molecule.

7 0
2 years ago
The molar heat of vaporization of water is 40.7 kJ mol . How much heat must be absorbed to convert 50.0 grams of liquid water at
podryga [215]
Molar mass of water 18g/mol

Number of mols = 50.0g/18g/mol =2.78 mol

 Heat absorbed = 40.7 kj/mol * 2.78 mol = 113.1 kj.
8 0
3 years ago
Which elements are solid at room temperature
Kryger [21]

Answer:bromine , neon , helium , argon , lithium , beryllium

Explanation:

8 0
3 years ago
Other questions:
  • How many molecules are in 2.50 moles of SO2
    6·1 answer
  • Which statement does NOT apply to Alkenes?
    11·2 answers
  • Well, we might as well try a similar question. Magnesium metal reacts with hydrochloric acid to produce hydrogen gas and an aque
    8·1 answer
  • When bases dissolve in water they release what type of negative ion?
    7·1 answer
  • At a given temperature the vapor pressure of pure liquid benzene and toluene are 745 torr and 290 torr, respectively. A solution
    15·1 answer
  • All living things have four basic needs to live and function. List these four needs.
    10·2 answers
  • X(g)+4Y(g)→2Z(g), ΔH∘=−75.0 kJ Before the reaction, the volume of the gaseous mixture was 5.00 L. After the reaction, the volume
    15·1 answer
  • CHECK MY RECENT QUESTION HELP ME ASAP
    11·1 answer
  • CAN YALL PLEASE HELP?!?!
    9·1 answer
  • What is name of: <br>1.Ca(H2PO4)2, <br>2.Fe(HSO4)2, <br>3.(CaOH)2SO4<br>4.Al(OH)Cl2​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!