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Art [367]
3 years ago
12

Deceive the photoelectric effect and explain why it made modifications to the Rutherford model necessary

Chemistry
1 answer:
Anna [14]3 years ago
5 0
Nooooooooooooooooooo
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A solution is created by dissolving 11.0 grams of ammonium chloride in enough water to make 305 mL of solution. How many moles o
vredina [299]
Reacting mass=11.0
molar mass =53.45
moles=reacting Mass /molar mass
11.0/53.45=0.21moles
4 0
3 years ago
What mineral is least important to plant growth
Oksi-84 [34.3K]

Answer:

sodium

Explanation:

nitrogem, phosphorous and potassium are very important to plant growth, but sodium isnt necessary.

7 0
3 years ago
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If silicon has a charge of +4 and oxygen has a charge of -2, what is the total charge on this structure?
Ratling [72]

Answer:

Zero with the subscripts, +2 without them.

Explanation:

Hello!

In this case, since we consider that two silicon are bonded with four oxygen atoms to form silicon oxide according to the following chemical equation:

Si^{4+}+O^{2-}\rightarrow Si_2O_4

It is also possible to realize it can be simplified to obtain:

SiO_2

Which means that the total charge with the subscripts is zero, and without the subscripts +2 (+4-2).

Best regards!

7 0
3 years ago
How do scientists test ideas about chemical evolution?
maksim [4K]
I think they test ideas about chemical evolution by doing experiments. Hope this helps
4 0
4 years ago
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What pressure in atmospheres(atm) is equal to 45.6 kPa?
RSB [31]
1 atm is equal to 101.3 kpa. 
therefore, to find the atm for 45.6kpa, divide 45.6 by 101.3 (and then multiply by 1 but that doesnt matter in this case).
giving 0.45 atm
7 0
4 years ago
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