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
Svetllana [295]
3 years ago
6

How do all stars form ?

Chemistry
1 answer:
professor190 [17]3 years ago
6 0

Answer:

starts form from a accumulation of gas and dust ,which collapses due to gravity and starts to form stars

You might be interested in
A 3.00 g mass of compound x was added to 50.0 g of water and it is found that the freezing point has decreased by 1.25 degrees c
zloy xaker [14]

Answer:

yes

Explanation:

suck abbc

3 0
3 years ago
In the lab you react 2.0 g of Na2CO3 with enough CaCl2. According to the reaction Na2CO3 + CaCl2 -> CaCO3 + 2NaCl How much Ca
vlada-n [284]

Answer:

1.89 g CaCO₃

Explanation:

You will have to use stoichiometry for this question.  First, look at the chemical equation.

Na₂CO₃  +  CaCl₂  ==>  2 NaCl  +  CaCO₃

From the above equation, you can see that for one mole of Na₂CO₃, you will produce one mole of CaCO₃.  This means that however many moles of Na₂CO₃ you have in the beginning, you will have the same amount of moles  of CaCO₃, theoretically speaking.

So, convert grams to moles.  You should get 0.0189 mol Na₂CO₃.  This means that you will get 0.0189 mol CaCO₃.  I'm not sure what units you want the answer in, but I'm going to give it in grams.  Convert moles to grams.  Your answer should be 1.89 g.

3 0
4 years ago
A company uses a substance that is Solid under normal conditions this substance will be used in extreme conditions which could m
creativ13 [48]

Answer:

Extreme heat will cause the substance molecules to move faster and cause a phase change this phase change would occur if left in an extremely hot area causing the molecules to spread apart.

Explanation:

3 0
3 years ago
Part 1 - Circle the elements in the list below.
irina [24]

Answer:

The elements in this list are:

Silver, hydrogen, carbon, nitrogen, gold, magnesium, nickel, mercury.

Explanation:

Elements are chemical substances that can be found on the periodic table.

4 0
3 years ago
1. Calculate the average atomic mass of rubidium. Rubidium has two isotopes, 85Rb and 87Rb. 85Rb has an atomic mass of 84.912 am
DiKsa [7]
Just use labels I’m lazy

5 0
2 years ago
Other questions:
  • Which change is exothermic?
    13·1 answer
  • When a carbon atom joints chemically with an oxygen atom it makes carbon monoxide what is the term for carbon monoxide?
    7·1 answer
  • The coinage metals -- copper, silver, and gold -- crystallize in a cubic closest packed structure. Use the density of silver (10
    15·1 answer
  • An example of a double reed musical instrument is the
    10·2 answers
  • Given the balanced equation:
    5·1 answer
  • Compound C with molar mass 205gmol-1 , contains 3.758g of carbon , 0.316g of hydrogen and 1.251g of oxygen. Determine the molecu
    5·1 answer
  • A compound containing phosphorus and oxygen has a molar mass of 157.9 g/mol and an empirical formula of PO3 .
    14·1 answer
  • True or false? Salt water takes a shorter time to boil than regular water.<br><br> Send help!!!!
    7·1 answer
  • 1. Oxygen was discovered by Joseph Priestley in 1774 when he heated mercury (II) oxide, HgO, to decompose it to form its constit
    8·1 answer
  • What is the molarity of a solution that was prepared by dissolving 82 g of cacl2?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!