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
Lady bird [3.3K]
4 years ago
12

Please need help!!! Nuclear chemistry

Chemistry
1 answer:
alex41 [277]4 years ago
3 0

Answer:

1.5 years

Explanation:

The half life of substance A is 0.5 years, or 6 months. If the initial mass of substance A is 16, grams, then in 6 months it will become 8 grams. In another 6 months, it will become 4 grams. This means that in the space of a year, substance A has lost 12 grams. In another 6 months, it would halve to 2 grams which is the remaining number.

You might be interested in
HELP!!!!! NO SPAM!!!!!!!!!!!!!!!!!
Lisa [10]

Answer:

Explanation: S + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2O In the above equation how many moles of water can be made when 115.3 grams of HNO3 are consumed? Round your answer to the nearest tenth. If you answer is a whole number like 4, report the answer as 4.0 Use the following molar masses. If you do not use these masses, the computer will mark your answer incorrect.: Element Molar Mass Hydrogen 1 Nitrogen 14 Sulfur 32 Oxygen 16...

Hope it helps..!!

4 0
3 years ago
Read 2 more answers
Hydrogen and nitrogen react to form ammonia according to the reaction, 3 H2 + N2 â> 2 NH3. If 4.0 moles of H2 with 2.0 moles
Debora [2.8K]

Answer:

d) 2.7 mol

Explanation:

  • 3 H2 + N2 → 2 NH3

limit reagent is H2:

∴ Mw H2 = 2.016 g/mol

∴ Mw N2 = 28.0134 g/mol

⇒ moles NH3 = (4.0 moles H2)×(2 mol NH3/3mol H2)

⇒ moles NH3 = 2.666 mol

⇒ moles NH3 ≅ 2.7 mol

5 0
3 years ago
What is 2000 converted to scientific notation
Tpy6a [65]
2 x 10 ^ 3 
should be the answer ^ 3 is the exponent
3 0
3 years ago
Read 2 more answers
What is the mole fraction?​
sleet_krkn [62]
Mole fraction is a unit of concentration, defined to be equal to the number of moles of a component divided by the total number of moles of a solution. Because it is a ratio, mole fraction is a unitless expression. The mole fraction of all components of a solution, when added together, will equal 1.
7 0
4 years ago
Read 2 more answers
Which of the following is a homogeneous mixture?
Gala2k [10]

Answer:

Water and applesauce are examples of a Homogeneous Mixture

Chicken Noodle Soup and Soil with Water would be examples of a Heterogeneous Mixture.

Explanation:

Homogeneous Mixtures are mixtures that are the same throughout, i.e. it's just one substance. A good example of this is a glass of water, this is because it is all one solution <u><em>without any other visible</em></u><u> </u><u><em>different parts</em></u><em> </em>that will settle if left alone for a while. The same applies to the applesauce, it is one type of a mixture with nothing else added to it.

Hetergeneous Mixtures on the other hand <u><em>are different substances </em></u>added together. The noodles, soup and chicken, three different substances in one mixture. The soil and water mixture also applies, two substances which separate if left alone.  

See http://chemistry.elmhurst.edu/vchembook/106Amixture.html#:~:text=A%20homogeneous%20mixture%20has%20the,gas%2C%20liquid%2C%20and%20solid. For more information.

5 0
4 years ago
Other questions:
  • What is the mass percent concentration of a saline solution prepared by dissolving 1.00 mol of Na2SO4 in 1.00 L of water?
    6·1 answer
  • One way to limit deforestation is by
    15·2 answers
  • 38.0 mL of a 0.026 M solution of HCl is needed to react completely with a 0.032 M NaOH solution. Calculate the number of moles o
    5·1 answer
  • Q24. List all of the ways you can force the reaction to shift to the product 5 points
    11·1 answer
  • how would I create a BCA chemistry table for this? I believe i started it right but i’m unsure of the rest.
    15·1 answer
  • Differences between alkalis, bases and acids? (answer for many points :) )
    10·1 answer
  • How many grams of Zn(NO3) are in 3.67 miles?
    10·1 answer
  • 4.00 dm of oxygen at a pressure of 2 atm and 1.00 dm3 nitrogen at a pressure of 1 atm are introduced into a 2.00 dm3 vessel.
    5·1 answer
  • Element
    5·1 answer
  • Why did all sodium compounds show the same colour in the flame?<br> (flame test)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!