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4 years ago

What does E+mc^2 mean and how it came to be

1 answer:

4 0

E = mc^2<span> is an equation derived by the twentieth-century physicist Albert Einstein, in which E represents units of energy, m represents units of mass, and c 2 is the speed of light squared, or multiplied by itself.</span>

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It is difficult to break the ionic bonds in a compound because of the...

mestny [16]

The answer to the first one is C. Strong attraction between ions

The answer to the second one is A. High melting points

Hope this helps :)

6 0

4 years ago

Read 2 more answers

Neha and Reha are playing see-saw. Neha is sitting 60 cm away from the fulcrum and Reha is sitting 40 cm away from the fulcrum.

stich3 [128]

Answer:

Reha should apply 540 N to lift Neha.

Explanation:

L = 360 N

LD = 60 m

E =?

ED = 40m

NOW

L * LD = E * ED

360 *60 = E*40

21600/40 = E

540 N = E

4 0

3 years ago

MATCH UPS - PLEASE HELP ^^photo attachment

Charra [1.4K]

Answer:

14. c

15. e

16. b

17. d

18. a

Explanation:

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3 years ago

In ionic bonding, atoms__.

Nutka1998 [239]

In ionic bonding, atoms SHARE ELECTRONS

8 0

3 years ago

How many grams of NaCI are present in 11.00 moles

Amiraneli [1.4K]

Answer: 642.93 g of NaCl

Explanation:

11.00 mol NaCl x __58.448 g__ = 642.928 g of NaCl

1 mol NaCl

I would round to 642.93 g of NaCl, but round to however many significant figures asked for.

My chemistry teacher made this map (image attached) to teach us how to do conversions. Just follow the map. I think it's pretty straight forward. I hope this helps.

7 0

3 years ago