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hram777 [196]
3 years ago
13

Which of the following is the proper scientific notation for the number 18,200?

Chemistry
2 answers:
satela [25.4K]3 years ago
8 0
1.82 x 10^4 i believe
Masja [62]3 years ago
6 0

Answer:

18,200 is expressed in scientific notation as 1.82 \times 10^4

Explanation:

To write 18,200 using the scientific notation you have to divide it and multiply it by 10,000 (because 10,000 has 5 digits like 18,200) as follows:

\frac{18,200}{10,000} \times 10,000

1.82 \times 10,000

10,000 can be rewritten as 10^4. Therefore:

1.82 \times 10^4

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jasenka [17]
One US ton will be equal to 907.185 kg and 1kg will be equal to 10^6mg.

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8 0
3 years ago
Which is most likely to influence the properties of an element? *
Svetradugi [14.3K]

Answer:

-the number of outer electrons

Explanation:

Outer electrons are referred to as valence electrons and they are typically what determines the property of an elements such as their reactivity.

For eg, Na (sodium) has 1 valence electron and it really wants to give it aways so it can return back to octet rule (having 8 electrons in outershell) to become stable. So when you put sodium in water (you can watch videos of it) it literally blows because of high reactivity.

7 0
3 years ago
Calculate the kinetic energy of an electron ejected from a piece of sodium (Φ = 4.41x10–19 J) that is illuminated with 265 nm li
miss Akunina [59]

Answer:

Explanation:

Energy of falling radiation having wavelength of 265 nm

= h c / λ where h is plank's constant , c is velocity of light and λ is wavelength of radiation . Putting the values

Energy of light photon = 6.6 x 10⁻³⁴ x 3 x 10⁸ / 265 x 10⁻⁹

= .0747 x 10⁻¹⁷

= 7.47 x 10⁻¹⁹ J .

Work function of sodium is 4.41 x 10⁻¹⁹

So kinetic energy of ejected electron = energy of falling photon - work function

= 7.47 x 10⁻¹⁹ - 4.41 x 10⁻¹⁹

= 3.06 x 10⁻¹⁹ eV .

5 0
3 years ago
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Marrrta [24]

Answer:

Its D

1 x 10-8M

Explanation:

I just took it

4 0
3 years ago
Read 2 more answers
Which group on the periodic table contains only metals?
Nataly_w [17]
The answers are very vague but basically the nonmetal group would be anything but the middle —

So the nonmetals would be the first , second group and then the last group, second to last group, all the way until you see B for Boron. Anything in the middle of the periodic table is a metal. So I would say along the top but to note, there are particular elements in group that aren’t along the top of the periodic table that would be considered a nonmetal!

I hope this helps you and if you are still confused let me know! :)
4 0
3 years ago
Read 2 more answers
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