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
Anastasy [175]
3 years ago
12

The table below compares the radioactive decay rates of two materials. Material Original mass of material (in grams) Mass of mat

erial after 60 hours (in grams) 1 208 13 2 200 50 Based on the table, which of these conclusions is most likely correct? (2 points) The half-life of Material 1 and Material 2 are equal. The half-life of Material 2 is double the half-life of Material 1. The half-life of Material 2 is 30 hours more than the half-life of Material 1. The half-life of Material 1 is 30 hours more than the half-life of Material 2.
Chemistry
1 answer:
Dmitry [639]3 years ago
8 0

Answer:

The half-life of Material 1 and Material 2 are equal.

step by step explanation;

Material 1 disintegrates to half its mass three times in 21.6 s, to go from 100g

to 12.5g. That is,

100g - 50g - 25g - 12.5g

Material 2 disintegrates to half its mass three times in 21.6 s, to go from 200g to 25g. That is,

200g - 50g - 25g - 12.5g.

This means that regardless of their initial masses involved, material 1 and material 2 have equal half-life.

Their half-life is 21.6 ÷ 3 = 7.2 sec

You might be interested in
A mechanical pencil has a mass of 47.4 grams. The volume of the pencil is 15.8 cubic centimeters. What is the density of the pen
BlackZzzverrR [31]
Density = mass over volume
so
47.4g/15.8cm^3
=3g/cm^3
4 0
3 years ago
Read 2 more answers
A balloon is filled with 0.250 mole of air at 35°C. If the volume of the balloon is 6.23 liters, what is the absolute pressure o
Jobisdone [24]
X= 101.325 kPa
The absolute pressure of the air in the balloon is 101.325 kilopascals.
6 0
3 years ago
Jerry listed the following process on his notebook:
topjm [15]

Answer:

2

Explanation:

1. The dew is formed when the water vapor at the atmosphere contacts the leaves, which are at a low temperature, so, the vapor temperature decreases, and the liquid is formed. So, it's a gas to liquid change.

2. Ice cubes are at the solid-state, thus this transformation is solid to a liquid change.

3. The cold juice is at a low temperature, so when the water vapor of the air contacts with the glass, its temperature decreases, and its change to a liquid phase. So, it's a gas to liquid change.

4. The evaporated water from the Earth's surface goes to the atmosphere, and, at high altitudes, the temperature is low, so the water vapor condenses and the drops get closer together forming the clouds. So, it's a gas to a liquid change.

5 0
3 years ago
HELP ASAP!! PLEASE !!
ZanzabumX [31]

Answer:

8,3, 7,7

Explanation:

6 0
2 years ago
What is the mass of 13 gold atoms?
Ludmilka [50]

Answer:

uuuh 4.25191 × 10-21 grams????

Explanation:

8 0
3 years ago
Other questions:
  • A 55.0 gallon drum weighs 75.0 lb when empty. What will be the total mass when filled with ethyl alcohol? ( Density = 0.789 g/mL
    8·1 answer
  • A beaker with 1.60×102 mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total molarity of acid and c
    9·1 answer
  • What is a base used in toothpaste?
    9·2 answers
  • Which of the following atoms has a full outer shell?
    5·1 answer
  • What is heavier 1 pound of bricks or 1 pound of feathers
    5·2 answers
  • Moseley made revisions to the periodic table that resolved some of the problems with Mendeleev's version. Which of these was a r
    7·1 answer
  • Chromium-48 decays. After 6 half-lives, how much of the original nuclei would remain if we started with 600 g?
    14·1 answer
  • Compare the following in the three states of matter
    9·1 answer
  • A cup of coffee is made in the morning by pouring water ov er ground up coffee beans in a piece of paper and by collecting the b
    15·1 answer
  • Can someone please help me.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!