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
Nuetrik [128]
3 years ago
6

The original amount of radioactive substance is 10 grams. After several years, 2.5 gtams of the substance is remaining. How many

half-lives havr passed since the mass of the subtance was 10 grams?
Chemistry
1 answer:
nirvana33 [79]3 years ago
8 0
10/2=5 (one half life)
5/2=2.5(two half lives)
You might be interested in
Find the volume of 56.0 grams of O2
N76 [4]

Answer:

39.2 L at STP

Explanation:

Convert the grams to moles first by dividing 56.0 by the molar mass of O2 (32.0) then convert to volume by multiplying by 22.4.

= 39.2 L

5 0
3 years ago
What is the difference between speed and acceleration?<br> Please help :)
ioda

Answer:

Speed is how fast you are going at the moment but acceleration is how fast you are building up speed to get to a set point

Explanation:

4 0
3 years ago
What is an example of chemical change
Helga [31]
 metal rusting in salt water
4 0
3 years ago
Read 2 more answers
Draw the structures of the aldol addition and condensation products of 3‑methylbutanal
Leona [35]

Aldol condensation involves  two aldehydes or two ketones or an aldehyde and a ketone. The product of the reaction is shown in the image attached.

<h3>What is Aldol condensation?</h3>

Aldol condensation is a reaction that involves two aldehydes or two ketones or an aldehyde and a ketone. This reaction occurs at the carbonyl group as one of the carbonyl compounds is in the enolate form.

The product of the reaction is shown in the image attached. This gives the mechanism for the Aldol condensation of the compound 3‑methylbutanal.

Learn more about aldol condensation: brainly.com/question/9415260

6 0
2 years ago
What does initial buret and final buret reading mean
ikadub [295]
Initial buret reading means the volume of acid taken in the buret and final reading means the remaining volume of acid after experiment
 
4 0
4 years ago
Other questions:
  • Match each of the following forms of sugar to its best description?
    13·1 answer
  • How do you solve this ??
    6·1 answer
  • Question 9
    5·1 answer
  • 1pt Which of the following is NOT true about the role tectonic forces play in the rock cycle?
    15·1 answer
  • Determine how many carbon dioxide (CO2) molecules are produced if 8.45 x 1023 molecules of water (H2O) are produced 2 C2H6 (g) +
    10·1 answer
  • (PLZ ANSWER SOON)
    12·1 answer
  • 3. Give three examples of a pure substances
    12·2 answers
  • Why does increasing the temperature of water increase the rate of chemical reaction in the graph
    7·1 answer
  • Why are metals so ductile?
    8·1 answer
  • Which statement best describes how the scientific community analyzes data?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!