The concentration of a solution can be expressed in (4) <span>moles per liter~</span>
Answer:
B. , C. and D.
Explanation:
pH is defined as the negative logarithm of the concentration of hydrogen ions.
Thus,
pH = - log [H⁺]
pH scale generally runs from 1 to 14 where pH = 7 represents neutral medium, pH < 7 represents acidic medium and pH > 7 represents basic medium.
Also, pH + pOH = 14
(a) So, pOH = 11.21
pH = 14 - 11.21 = 2.79
The solution is acidic.
(b) pH = 9.42
The solution is basic.
c. [OH⁻] > [H⁺]
More concentration of hydroxide ions leads to basic solution.
d. [OH⁻]> 1.0 x 10⁻⁷ M
1.0 x 10⁻⁷ M leads to neutral solution and hydroxide ions concentration greater than this yields to basic solution.
The name given to the group delimited in the image is ethyl.
<h3>What is ethyl?</h3>
It is a hydrocarbon from the alkyl functional group.
Ethyl is a substituent derived from ethane. The formula for ethane is
, whereas, ethyl has one H less than ethane.
Thus, the formula for ethyl is
.
Looking at the delimited portion of the image, 2 C atoms in C-C bond are bonded by 5 H atoms.
More on alky groups can be found here: brainly.com/question/15942698
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Answer:
C) are a result of hydrogen bonding
Explanation:
Cohesion, surface tension, and adhesion are the properties of water molecules that <u>are a result of hydrogen bonding.</u>
Answer:
2HBr + Mg(OH)2 => MgBr2 + 2 H2O
Explanation: To balance the equation put 2 in H2O in the product side. Then balance the other Hydrogen atoms by adding 2 in HBr. Since there is another 2 atoms of H in (OH)2 so hydrogen atoms are balanced having 4 atoms each sides. Also Mg and Br are balanced