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dexar [7]
3 years ago
14

Matter is never created or destroyed.

Chemistry
1 answer:
kumpel [21]3 years ago
8 0
I believe it is true!
You might be interested in
Skeleton equation for
Verizon [17]

Answer:

Magnesium oxide = MgO

Iron = Fe

Iron (III) Oxide = Fe₂O₃

Magnesium = Mg

Skeleton equation = MgO + Fe ⇒ Fe₂O₃ + Mg

3 0
3 years ago
The energy of the universe is constant. That what mentioned by the first law of thermodynamics,
Goryan [66]

Answer:

No, ΔE does not always equal zero because it refers to the systems internal energy, which is affected by heat and work

Explanation:

According to the first law of thermodynamics, energy is neither created nor destroyed. This implies that the total energy of a system is always a constant.

So, according to the first law of thermodynamics we have that ΔE = q + w. This means that the value of  ΔE depends on q (heat) and  w(work). Hence ΔE is not always zero since it depends on the respective values of q and w.

5 0
3 years ago
Show, in a step by step fashion, your calculations to determine the percent
marusya05 [52]

The percent  by volume of a solution : 19.23%

<h3>Further explanation</h3>

Given

50 ml of ethanol

210  ml of water

Required

The percent  by volume of a solution

Solution

Percent Volume (% v/v) : volume (ml) of solute/100 ml of solution ⇒ ratio of the volume of the solute to total volume of the solution

\tt \%solute(v/v)=\dfrac{solute~volume}{solution~volume}\times 100\%

solute= Ethanol

solvent=water

Solution = solute+solvent

Total volume of the solution :

\tt =volume~of~Ethanol+solume~of~water\\\\=50~ml+210~ml\\\\=260~ml

Percent by volume :

\tt \%volume=\dfrac{50}{260}\times 100\%\\\\\%volume=19.23\%

8 0
3 years ago
The atoms in the diagram above are...
vichka [17]

Answer:

losing valence electrons

Explanation:

please Mark as BRAINLIST answer

5 0
3 years ago
What is - 10°F in degrees Celsius
Anon25 [30]

Answer:

-23.333 °C

Explanation:

(-10°F − 32) × 5/9 = -23.33°C

6 0
3 years ago
Read 2 more answers
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