Frequency = speed of light
---------------------------
wavelength
= 3 x 10^8
------------------------
344 x 10^-9
= 8.72 x 10^14 Hz.
Hope this helps!
Answer:
72.6 grams
Explanation:
I got this answer through stoichiometry. For every 1 mole of Mg, 2 moles of CuBr are consumed. Because of this, multiply the moles of Mg by 2. Then, convert moles to grams.
When you're dealing with scientific notation (especially when you use an order of operations such as adding on it), it's important to know that you cannot add 10^2 to 3 (for example).
(3 x 10^5) + (5 x 10^8)
When adding exponents, you're only adding the exponents together and not changing the original number (10).
5 + 8 = 13
We now have a sum of 3x5 x10^13
Multiply 3 by 5 to get your new expression.
3 x 5 = 15
15 x 10^13 is what we're left with.
Your answer is A.)
I hope this helps!
Answer:
gallium
Explanation:
it is the old melting in a hot cup of coffee spoon
Answer:
[Ar]
Explanation:
To write abbreviated electron configurations, begin with the element of interest and work your way down in atomic numbers to the next smallest noble gas.
Write the noble gas symbol in [brackets] and then write the electron configuration as you would normally.
<em>I hope this helps you</em>
<em>:)</em>
