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
tresset_1 [31]
3 years ago
10

The half-life of carbon-14 is about 6000 years. assume that a sample of charcoal is formed by burning of living wood 15,000 year

s ago. how much of the original carbon-14 would remain today?
Chemistry
1 answer:
zimovet [89]3 years ago
4 0
The daughter isotope has an atomic number one less than the parent and a mass number two less. : A. : 1 20) The half-life<span> of </span>carbon-14<span> is about </span>6000 years<span>. </span>Assume<span> that a </span>sample<span> of </span>charcoal formed<span> by</span>burning<span> of </span>living wood 15,000 years ago<span>. How </span>much<span> of the </span>original carbon-14 would remain today? A) more than one-<span>half</span>
You might be interested in
What is the atomic weight of silver?
-BARSIC- [3]
<span>The atomic weight of silver is 107.8682</span>
6 0
3 years ago
Read 2 more answers
This is the elliptical orbit of the Earth around the sun. It takes 365.26 days to complete one orbit.
nydimaria [60]
Yes what is the question
5 0
3 years ago
Read 2 more answers
A car traveling at a constant speed travels 175 miles in four hours. How many minutes will it take for the car to travel 1000 fe
elena-14-01-66 [18.8K]

It takes 0.26 minutes to travel 1000 feet

<u>Solution:</u>

Given that car traveling at a constant speed travels 175 miles in four hours

Distance = 175 miles

Time taken = 4 hours

Convert the units to feet and minute

Given that,

1 mile = 5280 feet

175 miles = 5280 x 175 feet = 918720 feet

Also we know that,

1 hour = 60 minutes

4 hours = 60 x 4 minutes = 240 minutes

Thus, we got,

Distance = 918720 feet

Time taken = 240 minutes

<em><u>Find the speed of car</u></em>

<em><u>Speed is given by formula:</u></em>

speed = \frac{distance}{time}

speed = \frac{918720}{240} = 3828

Thus speed of car is 3828 feet per minute

<em><u>How many minutes will it take for the car to travel 1000 feet?</u></em>

Let "x" be the minutes needed for 1000 feet

speed of car is 3828 feet per minute

1 minute = 3828 feet

x minute = 1000 feet

This forms a proportion. We can solve by cross multiplying

x \times 3828 = 1000 \times 1\\\\x = \frac{1000}{3828}\\\\x = 0.26

Thus it takes 0.26 minutes to travel 1000 feet

7 0
3 years ago
A neutral atom has two, eight, eight electrons in its first, second, and third energy levels. this information ________. does no
olga55 [171]
This info tells us if it stable or not and it tells us how many electrons it need to be stable.
4 0
3 years ago
Read 2 more answers
Chemical energy is a form of _____ energy.
inn [45]

Answer: Option (d) is the correct answer

Explanation:

The energy present within the bonds of the atoms of a compound or molecule is known as chemical energy.

As this energy is present at a position that is, within the bonds hence it is a potential energy. So, whenever there occurs a chemical reaction the stored chemical energy is released.

As potential energy is the energy possessed because of position of a substance. And, kinetic energy is the energy present due to the motion of an object.

Therefore, we can conclude that chemical energy is a form of potential energy.

6 0
2 years ago
Other questions:
  • Which of the following conditions occurs as a liquid freezes​
    8·2 answers
  • When solutions of silver nitrate and calcium chloride are mixed, silver chloride precipitates out of solution according to the e
    7·1 answer
  • What is the missing part of the chemical equation shown below? acid + base ? salt + ________
    12·2 answers
  • A boron atom has ____ electrons at the first energy level and ____ electrons at the second energy level.
    13·1 answer
  • Would you expect lactic acid, ch3ch(oh)co2h ( in sour milk) or myristic acid, ch3(ch2)12co2h (used to make cosmetics) to be more
    9·1 answer
  • What is the difference between evaporation and boiling
    9·2 answers
  • How did Wegener use similar mountain ranges and areas made of certain types of rock found in Africa and South American as eviden
    9·1 answer
  • Determine the empirical and molecular formula of a compound composed of its 18.24 g c, 0.51 g h and 16.91 g flourine has a molar
    7·1 answer
  • Write a balanced equation of decomposition reaction which is carried out by the catalyst
    12·1 answer
  • Match the causes with their effects
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!