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Zarrin [17]
3 years ago
13

How many electron dots should As have?

Chemistry
1 answer:
Effectus [21]3 years ago
8 0

Answer:

5

Explanation:

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How many Ne atoms are contained in 32.0 g of the element?
Svetlanka [38]
Mass atomic of Ne=20.18 u
Therefore:
molar mass=20.18 g/1 mol

1 mole=6.022*10²³ particles (atoms or molecules)

Then: 6.022*10²³ atoms are contained in 20.18g

Now, We can solve this problem by the three rule.

6.022*10²³ atoms-------------------20.18 g
x------------------------------------------32 g

x=(6.022*10²³ atoms * 32 g)/20.18 g=9.55*10²³ atoms.

Answer: 9.55*10²³ Ne atoms are contained in 32 g of the element.
3 0
3 years ago
A student uses the periodic table to construct a model that uses a simple diagonal arrow to depict decreasing electronegativity.
Galina-37 [17]

Answer:

helium

Explanation:

helium has the highest ionization energy level

5 0
3 years ago
If excess ammonium sulfate reacts with 20.0g of calcium hydroxide how many grams of ammonia are produced
bagirrra123 [75]
The reaction between ammonium sulfate and calcium hydroxide is given below. 
            (NH₄)₂SO₄ + Ca(OH)₂ --> 2NH₃ + CaSO₄ + 2H₂O
From the balance equation, we can conclude that every 74 g of calcium sulfate reacted with enough amount of ammonium sulfate will yield 34 grams of ammonia. From the given amount,
               (20 g calcium sulfate) x (34 grams ammonia / 74 g calcium sulfate)
                               = <em>9.19 g ammonia</em>
3 0
3 years ago
_______ is force divided by area.
Digiron [165]

Answer:

Pressure

Explanation:

Basically when you are pressing something you are applying force over an area thus Pressure is force divided by area.

7 0
3 years ago
Read 2 more answers
The Earth and moon have different forces of gravity.
san4es73 [151]

Answer:

volume

Explanation:

the mass is the same on earth as it is on the surface of the moon. The weight is determined by the force of gravity. The density is the thickness. But the volume is not a factor.

4 0
3 years ago
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