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
Montano1993 [528]
3 years ago
6

If the half-life of a 20.0 g sample is known to be 24 minutes, how long will it take for only 5.0 grams of the sample to remain?

Chemistry
2 answers:
Degger [83]3 years ago
4 0
For a 20g sample it will take 24 minutes therefore for a 5g sample it will take 6 minutes
Katen [24]3 years ago
3 0

its will take 48 minutes

You might be interested in
Which answer best explains the relationship between size and mass of the sun?
gizmo_the_mogwai [7]
The mean radius of the sun is 432,450 miles (696,000 kilometers), which makes its diameter about 864,938 miles (1.392 million km). You could line up 109 Earths across the face of the sun. The sun's circumference is about 2,713,406 miles (4,366,813 km). The total volume of the sun is 1.4 x 1027 cubic meters.
3 0
3 years ago
The up and down movement of gases and liquids caused by heat transfer?
AnnZ [28]

Answer:

B.

Explanation:

The up and down movement of gases and liquids caused by heat transfer is convection.

4 0
3 years ago
A substance with a high [H ] would likely have which additional characteristics? a high [OHâ€"" ] and a high pOH a low [OHââ
viktelen [127]

The negative log function that determines the acidity or alkalinity by hydronium ion concentration is called pH.

The substance having high \rm [H] will have:

Option B. A low \rm [OH ^{-}] and a high \rm pOH

This characteristic can be explained as:

  • The concentrations of \rm [H^{+}] and \rm [OH ^{-}] are inversely dependent on each other so when the concentration of  raises then the concentration of \rm [OH ^{-}] drops and vice versa.

  • The pH of a solution or substance is calculated with the help of:

\rm  pH  = \rm - log  \rm [H^{+}]

From the formula, it can be deduced that when the concentration of \rm [H^{+}] is high then the pH has a low value and it means that the solution is acidic.

  • pH can also be written as:

\rm pH + pOH &= 14 \\\\\rm pOH &= 14 - pH

From this formula we can that when the value of pH is less then the value of pOH will be increased and vice versa.

Therefore, when pOH is in high concentration then \rm [OH ^{-}] is low.

To learn more about pH and pOH follow the link:

brainly.com/question/13557815

4 0
2 years ago
Please help!!!!!!!!!!!!!!!!!! Now that the lab is complete, it’s time to write your lab report. The purpose of this guide is to
Inessa [10]

Answer:

what was the lab?

Explanation:

8 0
3 years ago
John is lifting a 1.5 kg toy to a height of 1.2 m above the ground. How much work is done??
sveticcg [70]

1.5*9.8*1.2


since the formula is force * distance.


1.2 is the distance. the force is gravity on the object (1.5*9.8)


The answer is 17.64 J . (18 J with sig figs)

7 0
3 years ago
Other questions:
  • The diagram shows a balloon that was rubbed with a piece of cloth what is the change
    8·1 answer
  • What is the concentration (m) of sodium ions in 4.57 l of<br> a.847 m na3p solution?
    6·1 answer
  • Which two elements have similar characteristics?
    15·2 answers
  • Creating nuclear energy produces large amounts of radioactive waste.
    11·1 answer
  • A target is shielded from a radioactive sample by a sheet of metal. What kind of radiation can pass through the sheet of metal a
    11·2 answers
  • what kind of change occurs when sodium and chlorine combine ? Describe the matter before and after the change
    7·1 answer
  • Which of the following models best describes the arrangement of valence electrons in metals?
    8·1 answer
  • There are several differences between chemical and physical changes. Which process is a sign of a chemical change? A. Rotting po
    5·1 answer
  • Which states of matter can form solutions?
    14·2 answers
  • The pH of solution A is 7 and the pH of solution B is 5. Solution A has ____ times ______ hydrogen ion concentration compared to
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!