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sergij07 [2.7K]
3 years ago
15

1. In which of these cases do we have enough information to say that the atom is electrically neutral?

Chemistry
2 answers:
hammer [34]3 years ago
8 0
We can say an atom is electrically neutral if both electron (for electric charge) and proton (for positive charge) have the exact same amount
Since the number are needed in some amount to be considered stable (*2-1st level<span>-need 8 for valence level) , </span><span> The atom that has 7 protons and 7 electrons would be considered enough</span>
xxTIMURxx [149]3 years ago
6 0
The answer is the atom that has 7 protons and 7 electrons.
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How many salt and water would you use to prepare 10% salt solution?
tatuchka [14]

Answer:

We can make 10 percent solution by volume or by mass. A 10% of NaCl solution by mass has ten grams of sodium chloride dissolved in 100 ml of solution. Weigh 10g of sodium chloride. Pour it into a graduated cylinder or volumetric flask containing about 80ml of water.

Explanation:

have a good day

4 0
2 years ago
A change in which property of light will have no effect on whether or not the photoelectric effect occurs??? Frequently energy i
slavikrds [6]
Intensity has no affect on whether or not the photoelectric effect occurs.  The determining property is frequency and since frequency and wavelength are inversely proportional, wavelength matters as well.  If a frequency of light can't cause the photoelectric effect to happen, no matter what the intensity is, the light can't make it happen.

I hope this helps.  Let me know in the comments if anything is unclear.
5 0
3 years ago
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What would be the electron configuration of a sulfur ion S−2?
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It's either B or C heh

4 0
3 years ago
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2. What pressure is required to compress 196.0 L of air at 1.00 atmosphere into a cylinder
damaskus [11]

Answer:

<h2>7.54 atm </h2>

Explanation:

The required pressure can be found by using the formula for Boyle's law which is

P_2 =  \frac{P_1V_1}{V_2}  \\

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

From the question we have

P_2 =  \frac{1 \times 196}{26}  =  \frac{196}{26}   \\ = 7.538461...

We have the final answer as

<h3>7.54 atm </h3>

Hope this helps you

3 0
2 years ago
How are protons and neutrons similar? How are they different?
ad-work [718]
Protons and neutrons are in the center of the atom, making up the nucleus. The charge on the proton and electron are exactly the same size but opposite. Neutrons have no charge.
3 0
2 years ago
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