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aleksandrvk [35]
3 years ago
14

Oxygen has an atomic number of 8 this means that an oxygen atom has

Chemistry
1 answer:
ryzh [129]3 years ago
3 0
<span>Oxygen has 8 protons in its nucleus. </span>
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calculate the molality of commercial HCl solution which is 12.1Molarity, and has a density of 1.19g/mL, and is 37.2wt.%HCl.
shutvik [7]

Answer:

0.44165 Molal

8 0
4 years ago
(true or false) the electron structure of an atom is determined by direct observation using x-rays.
Mama L [17]

The answer is false. It is because the electron structure of the atom is not determined by using the direct observation of using an x-ray but rather the usage of theoretical modeling and the emission spectra will be useful in observing.

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3 years ago
Which of the following are cations? Check all that apply.
Lostsunrise [7]

Answer:

a

barium

b

calcium

e

aluminum

f

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g

copper

Forms cation

Explanation:

4 0
3 years ago
Write a balanced equation using the correct formulas and include conditions (s, l, g or aq) for each of the following reactions.
Aloiza [94]

Answer:

2Fe(s) + 3Cl2(g) → 2FeCl3(s)

Explanation:

Step 1: Data given

iron = Fe = solid = Fe(s)

chlorine = Cl2 = gas = Cl2(g)

iron(III) chloride = FeCl3 = solid = FeCl3(s)

Step 2: The unbalanced equation

Fe(s) + Cl2(g) → FeCl3(s)

Step 3: Balancing the equation

Fe(s) + Cl2(g) → FeCl3(s)

On the left we have 2x Cl (in Cl2) and on the right side we have 3x Cl (in FeCl3). To balance the amount of Cl we have to multiply Cl2 (on the left) by 3 and FeCl3 by 2.

Fe(s) + 3Cl2(g) → 2FeCl3(s)

On the left side we have 1x Fe and on the right side we have 2x Fe (in 2FeCl3). To balance the amount of Fe, we have to multiply Fe on the left side by 2. Now the equation is balanced.

2Fe(s) + 3Cl2(g) → 2FeCl3(s)

6 0
4 years ago
Amniotic egg is an egg that contains a f fluid-filled nucleus and a yolk sac
crimeas [40]
So for that one I’m going to go with True
5 0
3 years ago
Read 2 more answers
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