subject
Chemistry, 06.12.2020 08:10 gyexisromero10

0.20 g of sodium hydroxide (NaOH) pellets are dissolved in water to make 4.5 L of solution. What is the pH of this solution? Express the pH numerically to two decimal places.

A certain weak acid, HA, has a Ka value of 5.5×10−7.
Part A
Calculate the percent ionization of HA in a 0.10 M solution.
Express your answer to two significant figures and include the appropriate units.

Calculate the percent ionization of HA in a 0.010 M solution.
Express your answer to two significant figures, and include the appropriate units.

[H+]= 1.1×10−9 M .
Express the molarity to two significant digits.

ansver
Answers: 2

Another question on Chemistry

question
Chemistry, 21.06.2019 16:30
Asample of silver (with work function ? = 4.52 ev) is exposed to an ultraviolet light source (? = 200 nm), which results in the ejection of photoelectrons. what changes will be observed if: silver is replaced with copper (? = 5.10 ev) more photoelectrons ejected no photoelectrons are emitted fewer photoelectrons ejected more energetic photoelectrons (on average) less energetic photoelectrons (on average)
Answers: 3
question
Chemistry, 21.06.2019 20:00
Drag each number to the correct location on the equation. each number can be used more than once, but not all numbers will be used. balance the equation with the coefficients. 2 3 4 5 kclo3 -> kcl + o2
Answers: 1
question
Chemistry, 22.06.2019 03:20
What are fructose and glucose an example of?
Answers: 1
question
Chemistry, 22.06.2019 20:00
In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation:
Answers: 3
You know the right answer?
0.20 g of sodium hydroxide (NaOH) pellets are dissolved in water to make 4.5 L of solution. What is...
Questions
question
Social Studies, 09.05.2021 02:50
question
Mathematics, 09.05.2021 02:50
question
Social Studies, 09.05.2021 02:50
question
Mathematics, 09.05.2021 02:50
question
Spanish, 09.05.2021 02:50
question
Mathematics, 09.05.2021 02:50
Questions on the website: 13722362