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
Orlov [11]
3 years ago
6

The half-life of plutonium-238 is 87.7 years.

Chemistry
2 answers:
Margaret [11]3 years ago
8 0

Answer:

263.1 is exactly three half-life, so the remaining portion is (1/2 x 1/2 x 1/2) of the original sample. That's 1/8 which is 12.5%

kobusy [5.1K]3 years ago
6 0

Answer:

12.5 87.5

Explanation:

You might be interested in
there are 1540 megawatts of wind-generated electricity produced globally every year. This amount is equivalent to how many kilow
Reptile [31]

1.54 x 10⁶kW

Explanation:

The problem here is converting from megawatts into kilowatts.

  Given 1540megawatts.

The mega- and kilo- watts are prefixes that denotes multiples of units.

  1 megawatt = 10⁶watts

  1 kilowatt = 10³watts

Now given 1540megawatts power to Kilowatt power;

   We see that :

   1000kW = 1mW

 1540mW x \frac{1000kW}{1mW} = 1.54 x 10⁶kW

learn more:

energy units brainly.com/question/4791744

#learnwithBrainly

4 0
3 years ago
Please help me I will give you the brain thing with extra points if you help me, please. I need to get this right. 3/10
Cerrena [4.2K]

Answer:

I'd say its speed but not to sure

Explanation:

5 0
3 years ago
What is a Newton?<br> explain please
Lina20 [59]

Answer:

it is the unit of Force

Explanation:

force is equal to Newton

5 0
2 years ago
Read 2 more answers
Pls i have a chemistry test answers asap :'(​
Wittaler [7]

Answer:

in the wire last one is right

6 0
3 years ago
A sample of 19 mg of 9-fluorenone is dissolved in 5 mL of diethyl ether. The resulting organic
maks197457 [2]

Answer:

15.70mg would remain

Explanation:

Partition coefficient is used to extract or purify a solute from a solvent selectively to avoid interference from other substances. For the problem, formula is:

Kp = Concentration 9-fluorenone in ether / Concentration of solute in H₂O

After the solute, 9-fluorenone, is extracted with water, the mass that remains in ether is:

(19mg - X)

<em>Where X is the mass that now is in the aqueous phase</em>

Replacing in Kp formula:

9.5 = (19mg - X) / 5mL / (X /10mL)

0.95X = 19mg - X / 5mL

4.75X = 19 - X

5.75X = 19

X = 19 / 5.75

X = 3.30mg

That means 9-fluorenone that remain in the ether layer is:

19mg - 3.30mg =

<h3>15.70mg would remain</h3>
8 0
3 years ago
Other questions:
  • If 100. mL of 0.400 M Na2SO4 is added to 200. mL of 0.600 M NaCl, what is the concentration of Na+ ions in the final solution? A
    14·1 answer
  • A 5.0 g sample of calcium nitrate (Ca(NO3)2, M = 164) contaminated with silica (SiO2, M = 60.1) is found to contain 1.0 g calciu
    13·1 answer
  • Drag the tiles to the correct locations. Each tile can be used more than once, but not all tiles will be used. One or more locat
    5·2 answers
  • You have 1.2 L of air in a balloon 175 K. what is the new volume of the balloon when it is heated to 245 K
    13·1 answer
  • What two states of matter are found during melting
    8·1 answer
  • How does a rock<br>Wither? Explain.​
    14·1 answer
  • 8,000 meters into miles (show work)
    8·2 answers
  • What gas gets in and what gas get out of the body?
    10·2 answers
  • What happens to the amount of electrical energy when there are no clouds?
    15·1 answer
  • . how do some deep-sea animals use their bioluminescence, or ability to give off light? (select all that apply.)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!