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elena-s [515]
3 years ago
9

What is the number of electrons in silicon-30

Chemistry
2 answers:
Mila [183]3 years ago
6 0

Answer:

2, 8, 4

Explanation:

adoni [48]3 years ago
6 0
The number of electrons in silicon-30 is 14
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Match the humidities with their description.
Sloan [31]
1. C
2. D
3. A
4. B

Hope this helped! Please brainliest!
8 0
3 years ago
In the experiment involving hydrated copper sulfate, overheating causes a high calculated percent value for water. why is the hi
Strike441 [17]
The answer to this question would be: Because the increase of temperature will increase volume.

Using PV=nRT formula we can see that temperature increase will cause an increase in volume. Overheating will cause the volume increase, then increasing the volume. If the percent value used is based on the volume, it will seem that the water is increased. But if the percent is using mass, there will be no increases.
That is why sometimes scientists using molality in a reaction with high temperature changes.
3 0
3 years ago
I have my last 3 electrons on the third energy level.
weqwewe [10]

Answer:

an energy level represents the three dimensional space surrounding nucleus where electrons are most likely to be.

Explanation:

5 0
2 years ago
two atoms have the same number of protons but different number of neutrons. what can you conclude about these masses
Marina CMI [18]
These masses are isotopes. By definition, isotopes of an element have the same number of protons as the given element, but different numbers of neutrons.
7 0
3 years ago
How many grams of CO 2 are present in a container with a volume of 5.61 L if the gas exhibits a pressure of 5.66 atm at a temper
Kruka [31]

Answer:

54.72 g

Explanation:

Mass = ?

Volume = 5.61 L

Pressure = 5.66 atm

Temperature = 311 K

The relationship between these equations is given by the ideal gas equation;

PV = nRT

where R = gas constant = 0.0821 atm L K-1 mol-1

n = PV / RT

n = 5.66 * 5.61 / (0.0821 * 311 )

n = 1.2436 mol

Number of moles = Mass / Molar mass

Mass = Number of moles * Molar mass = 1.2436 * 44 = 54.72 g

5 0
3 years ago
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