Answer:
C4H3O
Explanation:
Data obtained from the question include:
Carbon (C) = 68.85%
Hydrogen (H) = 4.95%
Since the vaccine contains carbon, hydrogen and oxygen, the remaining percentage will be for oxygen. The percentage of oxygen will be:
Oxygen (O) = 100 - (68.85 + 4.95)
= 26.2%
The empirical formula for the vaccine can be obtained as follow:
Carbon (C) = 68.85%
Hydrogen (H) = 4.95%
Oxygen (O) = 26.2%
Divide the above by their individual molar mass as shown below:
C = 68.85/12 = 5.7375
H = 4.95/1 = 4.95
O = 26.2/16 = 1.6375
Next, divide by the smallest number as shown below:
C = 5.7375/1.6375 = 4
H = 4.95/1.6375 = 3
O = 1.6375/1.6375 = 1
Therefore, the empirical formula for the vaccine is C4H3O
Answer:
a) [NH2]-,
b) [O]2-
c) [Cl]-
Explanation:
The conjugate base is the base member (X⁻) of a weak acid (HX). In other words, the conjugate base is the remaining substance due to the proton loss in the acid HX.
a) For NH₃, (HX; X: NH₂⁻), conjugate base is NH₂⁻. In the format, <em>[NH2]-</em>.
b) For OH⁻, (HX; X: O²⁻), conjugate base is O²⁻. In the format,<em> [O]2-</em>.
c) For HCl, (HX; X: Cl⁻), conjugate base is Cl⁻. In the format, <em>[Cl]-</em>.
The statement that best explains why xenon has a higher boiling point than neon is that xenon has more electrons than neon.
<h3>What are intermolecular forces?</h3>
The term intermolecular forces are the force that hold matter together in a particular state such as solid liquid or gas. The more the electrons present, the greater the polarizability and the greater dispersion forces at work.
Thus, the statement that best explains why xenon has a higher boiling point than neon is that xenon has more electrons than neon.
Learn more about intermolecular forces:brainly.com/question/9007693
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Hey there!:
HA <=> H⁺ + A⁻
pH = -log[H+] = 6
[ H⁺ ] = 10^-pH
[ H⁺] = 10 ^ -6
[ H⁺ ] = 0.000001 M
Percent dissociation:
[ H⁺ ] / [ HA]o * 100
[ 0.000001 / 0.10 ] * 100
0.00001 * 100 => 0.0010%
Answer D
Hope that helps!
The last one, answer is D