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
belka [17]
3 years ago
8

What’s the star made up of challenge?

Chemistry
1 answer:
Crank3 years ago
4 0

Answer:

Stars are made of very hot gas. This gas is mostly hydrogen and helium, which are the two lightest elements. Stars shine by burning hydrogen into helium in their cores, and later in their lives create heavier elements.Stars are huge celestial bodies made mostly of hydrogen and helium that produce light and heat from the churning nuclear forges inside their cores.

You might be interested in
an enzyme is a catalyst used by living things to promote and regulate chemical reactions. What is the most likely enzyme for the
creativ13 [48]
The answer is Activation Energy
5 0
3 years ago
The difference between fission and fusion is that....
aliina [53]
Fusion and fission are both nuclear reactions that produce energy, but fusion is two nucleus joining (think about fuse or fusing), while fission is a nucleus splitting (think about fissure)

so the correct answer is <span>C. Fission is the splitting of a nucleus</span>
5 0
3 years ago
Read 2 more answers
While in Europe, if you drive 107km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter
Mumz [18]
That's a lot of conversions...
107*7 = 749km in one week
749/1.6 = 468.125 miles
468.125/39 = <span>12.0032051282 gallons of fuel needed
</span>1 gallon = 4.54609 litres
1.1(Cost per litre)*4.54609(Number of litres per gallon)*12.0032051282(Number of gallons needed) = <span>60.0244158814 euros cost per week
 </span>60.0244158814 * 1.26 = <span>75.6307640105 dollar cost per week
</span>$75.63
7 0
3 years ago
Read 2 more answers
Alicia cashed her paycheck and used half her earnings to take 3 friends to dinner. She spent $42.15 on dinner and she brought ho
MariettaO [177]

Alicia took half of her salary which is $42.15. So the total amount of her salary is $84..30.

Therefore, x-$42.15 ≥ $20.00

$84.30/x ≥$62.15

7 0
4 years ago
Read 2 more answers
32,500 joules are used to boil a sample of water at its melting point what is the mass of the water?
Ivenika [448]

Answer:

43.18 gm

Explanation:

Heat of fusion of water at 0° C is 334  j/gm

 then you have to heat the water to boiling point (100 C)

    specific heat of water is 4.186 j/g-c

x = grams of water

x ( 334 + 4.186 (100) ) = 32500

x = 43.18 gm

3 0
2 years ago
Other questions:
  • Which order shows the levels of organization from largest to smallest?
    5·1 answer
  • Which chemical formula represents the hydroxide ion? H+ H3O+ H2O OH-
    13·2 answers
  • why do chemist use relative masses of atoms compared to a refference isotope rather than the actual of the atoms
    9·1 answer
  • A solution is to be prepared with a sodium ion concentration of 0.513 mol/L. What mass of sodium sulfate (g) is needed to prepar
    11·2 answers
  • Oxygen is the ________ component of the atmosphere in terms of volume
    8·1 answer
  • If a solution has a pH of 1.50, what is the pOH of the solution?
    8·1 answer
  • A student collects petals from six plant species. Describe how he could find out which species' petals
    11·1 answer
  • What is the volume of gas at the temperature of 100K
    8·1 answer
  • Pls help
    9·1 answer
  • Balance each of the following redox reactions and classify it as a combination, decomposition, or displacement reaction:
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!