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
attashe74 [19]
3 years ago
6

What is the half-life of a radioisotope if a 50-g sample becomes 25 g after 18

Chemistry
1 answer:
vredina [299]3 years ago
4 0

Answer:

18 DAYS IS THE HALF LIFE OF THE RADIOISOTOPE.

Explanation:

Using the formula

Nt = No * (1/2)^t/t1/2

where;

Nt = amount remaining = 25 g

No = Initial amounrt of the radioisotope = 50 g

t = time elapsed = 18 days

t1/2 = half life = unknown

Substitute the values into the equation and obtain the half life of the radioisotope;

Nt = No * (1/2) ^t/t1/2

25 = 50 * (1/2) ^18/t1/2

25 /50 =  (1/2)^18/ t1/2

1/2 = (1/2)^18/t1/2

1/2)^1 = (1/2)^18/t1/2

1 = 18/t1/2

t1/2 = 18 days.

So therefore the half life of the radioisotope is 18 days.

You might be interested in
Throughout the reflection, make sure you have a copy of the Student Guide and your data tables. Use the drop-
zalisa [80]

Answer: 1. Mass and type of solution

2. Type of material

3. Temperature

5 0
3 years ago
Read 2 more answers
If I have ten hydrogen molecules and three oxygen molecules, how many molecules of water can I make and how many leftover?
damaskus [11]

Answer:

3 molecules of water with  4 hydrogen atoms left over

Explanation:

Formula for water is H2O

2 hydrogen per 1 Oxygen

we have 10 H and 3 O

3 0
3 years ago
Read 2 more answers
What uses the most oil in the United States
Furkat [3]

Answer:

i think the answer is D-Transpirtation

5 0
3 years ago
Read 2 more answers
If you have two wires made out of the same material and the same thickness, one is 3-inches long and one is 6-inces long, which
Harlamova29_29 [7]

Answer:

6 inces

Explanation:

8 0
3 years ago
Carbon dioxide enters the atmosphere by natural processes and from human activity. Why is the latter a cause of concern?
Angelina_Jolie [31]

By removing long-buried fossil fuels and burning them to produce electricity, human activities have drastically disrupted the natural carbon cycle and released CO2 into the atmosphere. The burning of fossil fuels like coal, natural gas, and oil, including gasoline, is responsible for 85% of all human-produced carbon dioxide emissions.

reductions in atmospheric oxygen concentration and the proportion of other carbon isotopes (14C and 13C) have been observed. Because the natural mechanisms that may restore the balance are too slow relative to the rates at which human activities are adding CO2 to the atmosphere, the extra CO2 from burning fossil fuels and deforestation has upset the equilibrium of the carbon cycle. As a result, a sizeable portion of the CO2 produced by human activity builds up in the atmosphere, where part of it will stay for thousands of years rather than just a few decades or centuries.

Learn more about Fossil fuels here-

brainly.com/question/2029072

#SPJ4

6 0
2 years ago
Other questions:
  • What is the scientific name for acetone
    15·1 answer
  • 3,3,4-trimethylhexane, 2,3-dimethyl-2-butene, and 3-methyl-1-butyne identify as an alkane, alkene, or alkyne and sketch its stru
    15·1 answer
  • You want to create a special device to keep coffe warm which type of electromatic wave use
    11·2 answers
  • Nitrogen monoxide and oxygen, both colorless gases, form a red-brown gas when mixed. Nitrogen monoxide and oxygen are called the
    10·1 answer
  • The rate law for the decomposition of phosphine (PH3) is below. It takes 120. s for 1.00 M PH3 to decrease to 0.250 M. How much
    7·1 answer
  • The term that refers to how much of a solute can be dissolved is
    5·1 answer
  • The 4 in formula 4H2O is a<br><br>1. coefficient<br>2. subscript<br>3. superscript<br>4. binomial​
    8·1 answer
  • Melissa's mother was making chocolate chip cookies, but told Melissa that she shouldn't eat the raw cookie dough. Why is it unsa
    14·1 answer
  • 2.50 liter of a gas has a pressure of 165. kPa at 25.0°C. If the pressure increases to 600. kPa and the temperature to 100.0°C,
    13·1 answer
  • 10.5g of zinc trioxocarbonate(iv), were heated very strongly to a constant Mass and the residue treated with excess by hydrochlo
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!