NH3 is a gas at room temperature. Solutions of "ammonia" are made by bubbling NH3 through water, so there's no "pure ammonia" unless you are talking about the gas.
Answer:
5.3⋅10 - 23 g
(-23 has to be small numbers above)
D i think if not here’s this a collection of beliefs or practices mistakenly regarded as being based on scientific method
Answer:
![\huge 3.322 \times {10}^{ - 5} \: \: moles \\](https://tex.z-dn.net/?f=%20%5Chuge%203.322%20%5Ctimes%20%20%7B10%7D%5E%7B%20-%205%7D%20%20%5C%3A%20%20%5C%3A%20moles%20%20%5C%5C%20)
Explanation:
To find the number of moles in a substance given it's number of entities we use the formula
![n = \frac{N}{L} \\](https://tex.z-dn.net/?f=n%20%3D%20%20%5Cfrac%7BN%7D%7BL%7D%20%5C%5C)
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
![n = \frac{2.00 \times {10}^{19} }{6.02 \times {10}^{23} } \\ \\ = 3.322 \times {10}^{ - 5} \: \: moles](https://tex.z-dn.net/?f=n%20%3D%20%20%5Cfrac%7B2.00%20%5Ctimes%20%20%7B10%7D%5E%7B19%7D%20%7D%7B6.02%20%5Ctimes%20%20%7B10%7D%5E%7B23%7D%20%7D%20%20%5C%5C%20%20%5C%5C%20%20%3D%203.322%20%5Ctimes%20%20%7B10%7D%5E%7B%20-%205%7D%20%20%5C%3A%20%20%5C%3A%20moles)
Hope this helps you