3 years ago

The blank and the blank of atoms are the same on both sides of a chemical equation.

1 answer:

7 0

Answer:

Every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. Therefore, there must be the same number of atoms of each element on each side of a chemical equation.

Explanation:

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What is the number of moles in 500L of He gas at STP

kompoz [17]

Ah, this is actually a fairly simple chemistry question.

Recall that at STP, one mole is equivalent to 22.4 L. Knowing this, all you have to do is divide 500 L by 22.4 L to find the number of moles:

500/22.4 = 22.3 mol

-T.B.

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3 years ago

Solve the following division problem: (3.4 x 10^7)/(6.8 x 10^3) =

eduard

Answer:

5000

Explanation:

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3 years ago

What do the arrows in the diagram tell you about the molecule?

maw [93]

Answer:

Explanation:

<h2>#keep learning </h2><h3>hope makatulong</h3>

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3 years ago

In the lab there is a vile of mercury and it has a mass of 43.0 grams. If the density of mercury is 13.6 g/mL, what is the volum

Vitek1552 [10]

Answer:

<h2>The answer is 3.16 mL</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

$volume = \frac{mass}{density}$

From the question

mass = 43 g

density = 13.6 g/mL

The volume is

$volume = \frac{43}{13.6} \\ = 3.161764$

We have the final answer as

Hope this helps you

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3 years ago

Which changes occur when Pt2+ is reduced?

skad [1K]

The correct answer is option 2. When Pt2+ is reduced it loses electrons, oxidizing it. The oxidation number is the charge of the atom. Adding an electron, decreases the net charge consequently the oxidation number.

3 0

3 years ago

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