Answer:
12.55 → pH
Explanation:
pH = - log [H⁺]
pH = 14 - pOH
pOH = - log [OH⁻]
pOH = - log 0.035 = 1.45
14 - 1.45 = 12.55 → pH
Remember that [OH⁻] . [H⁺] = 1×10⁻¹⁴ M
Given the Planck's constant and the speed of light, the energy of the ultraviolet light with a frequency of 9.58×10¹⁴ Hz is 6.35×10¯¹⁹ J (Option C)
<h3>Data obtained from the question </h3>
- Planck's constant (h) = 6.626×10¯³⁴ Js
- Speed of light (v) = 3×10⁸ m/s
- Frequency (f) = 9.58×10¹⁴ Hz
- Energy (E) =?
<h3>How to determine the energy </h3>
The energy of the ultraviolet light can be obtained as follow:
E = hf
E = 6.626×10¯³⁴ × 9.58×10¹⁴
E = 6.35×10¯¹⁹ J
Learn more about energy:
brainly.com/question/10703928
In this problem we need to obtain a molecule with a neutral charge that also satisfies the noble gas configuration. Lithium (Li) is a group 1 metal so it needs to lose an electron to achieve noble gas configuration. The loss of an electron will give it a (+1) charge. In contrast, Nitrogen (N) is a group 5 element and needs to gain 3 electrons to achieve noble gas, hence it has a charge of (-3) charge. A neutral molecule has the sum of oxidation states of all atoms equal to zero. Hence 3 molecules of lithium and 1 molecule of nitrogen give a neutral molecule.
Therefore 3,1 is the correct answer, 
Are their answer if so can i see the choices.?
Microscale could be best bet as evaboration and other factors can come in play. otherwise contact angle measurements could have something related calculated via surface tension.
something that is possible, calculating mols via gravimetry.
finding the suitable material could be tricky as if it needs to be instant. silica gel doesn't necessarily work
adsorption vs. absorption
