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
alexira [117]
3 years ago
10

A radioactive isotope has a half-life of 2 minutes. How many total minutes will it take for 100-g of the isotope to get to just

6.25-g remaining
Chemistry
2 answers:
sergij07 [2.7K]3 years ago
6 0

Answer:

8 minutes

Explanation:

G(g)                 T(min)

100 --------------- 0

50-------------------2

25 -------------------4

12.5  ---------------  6

6.25 ----------------8

     another    way:

100/6.25 = 16

  16 = 2⁴       ( 4 half lives)    

Each half life is 2 minutes

so 4 half lives will be 8 minutes

andreev551 [17]3 years ago
4 0

Answer:

It would take 12 minutes.

You might be interested in
What are three forms of the element carbon?
german

Answer:

There are at least eight forms of carbon: amorphous, graphite, diamond, fullerenes, aggregated diamond nanorods, carbon nanofoam, glassy carbon, and linear acetylenic carbon.

Explanation:

3 0
3 years ago
Brainliest to whoever gets it correct.
pochemuha

Answer:

soi

brgm

12ck

3hp akdjskfkoos

8 0
3 years ago
A sample of methane gas, CH4, occupies 3.25 L at temperature of 19.0 o C. If the pressure is held constant, what will be the tem
Artemon [7]

Answer:

625.46 °C

Explanation:

We'll begin by converting 19 °C to Kelvin temperature. This can be obtained as follow:

T(K) = T(°C) + 273

T(°C) = 19 °C

T(K) = 19 °C + 273

T(K) = 292 K

Next, we shall determine the Final temperature. This can be obtained as follow:

Initial volume (V₁) = 3.25 L

Initial temperature (T₁) = 292 K

Final volume (V₂) = 10 L

Final temperature (T₂) =?

V₁/T₁ = V₂/T₂

3.25 / 292 = 10 / T₂

Cross multiply

3.25 × T₂ = 292 × 10

3.25 × T₂ = 2920

Divide both side by 3.25

T₂ = 2920 / 3.25

T₂ = 898.46 K

Finally, we shall convert 898.46 K to celsius temperature. This can be obtained as follow:

T(°C) = T(K) – 273

T(K) = 898.46 K

T(°C) = 898.46 – 273

T(°C) = 625.46 °C

Therefore the final temperature of the gas is 625.46 °C

4 0
3 years ago
Systems Working Together
gogolik [260]

Answer:

Explanation:

Food moves through the digestive system with a wave-like motion called peristalsis. Muscles in the walls of the hollow organs contract and relax to cause this movement, which pushes food through the esophagus into the stomach.Apr 25, 2018

4 0
3 years ago
What volume will 3.0 moles of O2 gas occupy at S.T.P?
REY [17]

Answer:

3 moles of oxygen at STP will occupy a volume of 3×22. 4=67. 2 L.

Explanation:

6 0
2 years ago
Other questions:
  • A. What are the products for this chemical Equation? B. What kind of Reaction is this?
    9·1 answer
  • When the atoms of two substances joined to make a new substance the process is called?
    14·1 answer
  • The matter that travels through a wave is called the what of a wave?
    12·1 answer
  • How much heat must be removed from 25.0g of steam at 118.0C in order to form ice at 15C
    14·1 answer
  • A test tube can be used to hold
    7·1 answer
  • Deuterium is a relatively uncommon form of hydrogen, but can be created from what common source? Select one: A. Coal B. Air C. N
    14·1 answer
  • Sunlight shining through a clear window it’s Jeremy’s face while he does his homework he uses a large wooden wooden block to cov
    6·2 answers
  • The properties of two elements are listed below. Element Atomic radius (pm) Ionic radius (pm) First ionization energy (kJ/mol) E
    7·1 answer
  • How can you test a mineral for hardness?<br><br> I NEED~ THIS NOW PLEASE
    9·1 answer
  • Match each definition to the appropriate term.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!