Answer: Galaxy
Explanation: A galaxy is a large system of stars held in place by mutual gravitation.

The chemical property deals with the ability of a substance being able to burn is called combustibility [ option b ] .
<u>More</u><u> to</u><u> know</u><u> </u><u>:</u><u>-</u>
<em>1</em><em>)</em><em> </em><em>Combustion</em><em> </em><em>:</em><em>-</em>
Combustion is a chemical process in which a substance reacts rapidly with oxygen and gives out heat.
The fuel can be any one of the 3 states of matter that is - solid , liquid & gases .
Examples of combustible substances :-
Solid - Coal
Liquid - Petrol , Disel , etc.
Gas - Hydrogen , Oxygen , etc .
mol of Na2CO3 = 2.36 x 10⁻⁴
<h3>Further explanation</h3>
Given
Mass : 0.025 g of Na2CO3
Required
moles
Solution
The mole is the number of particles contained in a substance
1 mol = 6.02.10²³
Moles can also be determined from the amount of substance mass and its molar mass :
mol = mass : molar mass
mass = mol x molar mass
Input the value :
mol = mass : MW Na2CO3
mol = 0.025 g : 106 g/mol
mol = 2.36 x 10⁻⁴
Answer:
C. better meat
Explanation:
Farmers always are looking to better their stock to possibly increase milk production or increase the meat quality.
<u>Answer:</u> The new pressure of CO is 0.09 atm
<u>Explanation:</u>
For the given chemical reaction:

The expression of
for above equation follows:
.......(1)
We are given:

Putting values in above equation, we get:

Addition pressure of chlorine added = 0.39 atm
Now, the equilibrium is re-established:

Initial: 0.26 0.15 0.66
At eqllm: 0.26-x 0.54 0.66+x
Putting values in expression 1, we get:

So, new pressure of CO = 0.26 - x = (0.26 - 0.17) = 0.09 atm
Hence, the new pressure of CO is 0.09 atm