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
Serggg [28]
2 years ago
11

1. What allowed fusion reactions to take place in the early universe?

Chemistry
2 answers:
olasank [31]2 years ago
8 0

Answer:

Nuclear fusion in stars converts hydrogen into helium in all stars

Hunter-Best [27]2 years ago
6 0
Nuclear fusion in stars converts hydrogen into helium in all stars
You might be interested in
A unit of heat energy that was formerly used frequently was the calorie. Look up the definition of the calorie in your textbook
dybincka [34]

Answer and Explanation:

Calorie is the unit of heat energy . There are 2 units with the same name 'calorie' which is widely used.

'The amount of heat energy required to increase the temperature of 1 gram of water by mass by 1^{\circ}C or 1 K is known as small calorie or gram calorie'.

Another one is large calorie which can be defined as :

'The amount of heat energy required to make arise in temperature of water 1 kg by mass by 1^{\circ}C or 1 K is known as large calorie or  kilcalorie and is represented as Cal or kcal'.

After the adoption of SI system, thee units of the metric system cal, C or kilocal are considered deprecated or obsolete with the SI unit for heat energy as 'joule or J'

1 cal = 4.184 J

1C or 1 kilocal = 4184 J

Calorimeter constant:

Calorimeter constant, represented as 'C_{cal}' is used to quantify the heat capacity or the amount of heat of a calorimeter.

It can be calculated by ther given formula:

{\displaystyle C_{cal}}={\frac {\Delta {H}}{\Delta {T}}}}}

where,

{\Delta {T}} = corresponding temperature change

{\Delta {H} = enthalpy change

Its unit is J/K or J/1^{\circ}C[/tex] which can be convertyed to cal/1^{\circ}C[/tex] by dividing the calorimeter constant by 4.184 or 4184 accordingly.

8 0
3 years ago
Which property of gases is explained by the process of diffusion?
Sindrei [870]

Answer: D. Their ability to fill the available volume in a container. I hope this is right.

3 0
3 years ago
Read 2 more answers
I need help with this pls help !!
Doss [256]

Answer:

70g of HCl

Check the attachment below. Locate 25C and then follow the line where it meets the curve.

4 0
2 years ago
Question number 4..​
Murrr4er [49]

Answer:

I think it's 7089 because that's my answer to your questions

4 0
2 years ago
SOMEONE HELP ME!!!
AlladinOne [14]

Answer: I believe this statement is true.

Explanation: Energy decreases as it moves up trophic levels because energy is lost as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level. Sorry if this is wrong, it is just what i believe.

3 0
3 years ago
Read 2 more answers
Other questions:
  • A metabolic pathway that ___ (oxidizes or reduces) an energy-rich source to produce ATP from ADP. Electrons are transferred from
    5·2 answers
  • The equation, H2SO4 (aq) + Sr(OH)2 (aq) arrow SrSO4 (aq) + H2O (l), represents what?
    6·2 answers
  • Which statement is true about a reversible reaction?
    13·1 answer
  • Write the overall, ionic and net ionic equations for the following reaction. Hydrobromic acid (HBr) and Strontium hydroxide (Sr(
    11·2 answers
  • Astatine belongs to which element group: nonmetal, halogen, noble gas?
    6·1 answer
  • What would you use the scientific method for
    7·2 answers
  • A 0.610 m aqueous solution of kbr has a total mass of 75.0 g. what masses of solute and solvent are present?
    10·1 answer
  • Question 6 (3 points)
    15·1 answer
  • A substance that is made up of more than one kind of molecule is called a
    14·1 answer
  • Copper(ii) chloride reacts with sodium nitrate to produce copper(ii) nitrate and sodium chloride.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!