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
olchik [2.2K]
3 years ago
13

Heavy elements, like uranium, were/are created _______________. a. in supernovae and star collisions b. all of the above c. in t

he Big Bang. d. through nuclear fusion in mid-sized suns, like ours.
Chemistry
1 answer:
Ivenika [448]3 years ago
3 0

Answer:

a. in supernovae and star collisions

Explanation:

The periodical table contains some heavier elements, which are formed as neutron stars pairs hit eachother and erupt cataclysmically.

The star emitts very large quantities of energy and neutrons during supernova, which allow for the production of heavier elements than iron, such as uranium and gold. All these elements are ejected into space during the supernova explosion.

You might be interested in
When an electron moves from a lower energy level to a higher energy level, the atom:
Ede4ka [16]

Answer:

A. absorbs light

Explanation:

For an electron to move from a lower energy level to a higher energy level, energy needs to be added to the atom.

In most cases this required energy will be light: The electron of the atom will absorb the energy of the light and move to a higher energy level.

When said electron comes back to the lower energy level, the atom will conversely give off light.

5 0
3 years ago
4
STALIN [3.7K]

Answer: The space occupied by the gas at 400 torr and 25^{o}C is 250 mL.

Explanation:

Given: V_{1} = 250 mL,    P_{1} = 800 torr,     T_{1} = 50^{o}C

V_{2} = ?,         P_{2} = 400 torr,        T_{2} = 25^{o}C

Formula used is as follows.

\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}

Substitute the values into above formula as follows.

\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}\\\frac{800 torr \times 250 mL}{50^{o}C} = \frac{400 torr \times V_{2}}{25^{o}C}\\V_{2} = 250 mL

Thus, we can conclude that space occupied by the gas at 400 torr and 25^{o}C is 250 mL.

7 0
3 years ago
What reactions are responsible for the glow and heat from the sun? nuclear fission nuclear fusion chemical reactions atomic disi
Mamont248 [21]
Nuclear Fusion is the answer to the question who posted.

7 0
3 years ago
Read 2 more answers
Elements in the 2nd family/group gain or lose electrons? *
Savatey [412]
They lose electrons
6 0
3 years ago
A newborn eats 8 times a day. At each feeding, he eats 2.5 ounces of formula. How many days would it take to eat 100 ounces
fredd [130]

Answer:

It would take 5 days

Explanation:

1. 2.5 times 8 is 20 ounces

2. 2.5 times 16 is 40 ounces

3. 2.5 times 24 is 60 ounces

4. 2.5 times 32 is 80 ounces

5. 2.5 times 40 is 100 ounces

6 0
3 years ago
Read 2 more answers
Other questions:
  • Choose the correct statements from the list below:
    5·1 answer
  • Super easy help me out
    11·1 answer
  • Hi i need hel does any one know what P3N2 means ??? .-.
    9·1 answer
  • Polyesters are formed from the reaction of __________.
    13·1 answer
  • The thikness of an eye lash is 15 mm how much this will be in meters ? write it in scientific Notation.
    14·1 answer
  • Are people made up of matter? Do they have mass?
    10·1 answer
  • Uhu khanay sai kia hota hai
    9·1 answer
  • Which organic compound has 4 carbon atoms with at least one triple bond?
    13·1 answer
  • An egg sinks in fresh water but it floats on salty water.why?​
    9·1 answer
  • How many moles are in 29.8grams of CaCl2?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!