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Alik [6]
3 years ago
10

What does the law of conservation of mass state?

Chemistry
2 answers:
katrin [286]3 years ago
8 0

Answer:

matter cannot be created nor destroyed

Explanation:

natulia [17]3 years ago
7 0

Answer:

Mass cannot be created nor destroyed in a chemical reaction

Explanation:

The law of conservation of mass was stated by Antoine lavoisier in 18th century which states that for a isolated system the mass can neither be created nor be destroyed in a chemical reaction. It means that the total mass of the reactants is equal to the total mass of the product formed i.e there is no change in the mass of the reactants even after the reaction which is stated by the law of the conservation of the mass.

The mass of the elements are not created or destroyed but their form is changed to another form of atoms or molecules with conserved mass.  

For a balanced chemical equation of the formation of the water, 4 grams of hydrogen combines with 32 grams of the oxygen to give 36 grams of the water where the sum of the mass of the reactant is equals to the mass of the product.

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The bulb lights up in the circuit. Only two rods are conductors of electricity. Which one of the rods, X, Y or Z is definitely a
meriva

Answer: Rod X.

Explanation:

Ok, the electricity starts in the top left part. First, it must travel in the X rod, then it keeps traveling until it reaches the parallel path, and it can go to the Z rod, to the Y rod, or to both of them, and then it reaches the bulb (the circle with a X inside of it).

We know that two rods are conductors of electricity.

Now, suppose the case where rods Z and Y are the ones that conduct electricity, this means that X does not conduct electricity, then when the current reaches to X it stops (because X does not conduct) then the electricity never reaches the rods Z and Y, and then the electricity never reaches the bulb, but we know that the bulb lights up, so we must have that X is one of the conducting rods.

Then, if for example, Y does not conduct electricity, the electricity still can run through the Z rod and eventually reach the bulb.

So we can conclude that the rod that is definitely a conductor of electricity is rod X

4 0
3 years ago
Carvone is a substance that occurs in two forms having different arrangements of the atoms but the same molecular formula (c10h1
Korvikt [17]

The molecular mass of Carvone is calculated as;

                          =  12 (C)₁₀  +  1.008 (H)₁₄  +  16 (O)

                          =  120  +  14.112  +  16

                          =  150.112

%age of Carbon;

                          =  (120 ÷ 150.112) × 100

                          =  79.94 %

%age of Hydrogen;

                          =  (14.112 ÷ 150.112) × 100

                          =  9.40 %

%age of Oxygen;

                          =  (16 ÷ 150.112) × 100

                          =  10.65 %

7 0
3 years ago
Why might it be unwise to drink water straight from a pond
arsen [322]

Answer:

it is because of the bacteria and different things that go into waters such as ponds, rivers, lakes, seas, oceans, streams, and other body of waters and I should also add the chemicals that go into them as well

Explanation:

5 0
2 years ago
Why are metals good conductors of electrical current?
Marina86 [1]
I believe the answer is A
Electrons can flow freely in metals.
7 0
3 years ago
Read 2 more answers
A solution of toilet bowl cleaner has PH of 13 the solution is?
AlladinOne [14]
The solution is an alkali.

Usually with the pH value range of 14, substances with pH 7 can be called neutral. Meanwhile substances lower than pH 7 are acids, the lower the pH is, the more acidic it is. Such as cola, it has a pH 2, which is very acidic.
In opposite, the substances with pH over 7 are called alkalis. Again, the larger the pH value is, the more alkaline it is. So pH 13 is a strong alkaline therefore it it corrosive and can clean the toilet well.
8 0
3 years ago
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