Chemistry, 20.03.2021 02:20 steliosceltics2541
45. What is the pH of the solution which results from mixing 150 mL of 0.50 M
CH, CO2H(aq) and 150 mL of 0.50 M NaOH(aq) at 25 °C? (K. of CH. CO2H = 1.8 10-4)
a) 2.67
b) 4.74
c) 4.93
d) 8.26
e) 9.07
Answers: 3
Chemistry, 22.06.2019 21:30
Electromagnets coils of wire paper clips picked up 10 3 15 6 20 9 25 12 ms. owens' class was studying magnets. ms. owens showed her students how to make an electromagnet using a nail, a d-cell battery, and plastic coated wire. the students wrapped the wire around the nail and then attached the ends to the battery. when they were finished, they tested their magnets by investigating how many paperclips their magnets could pick up. they also tested whether they could increase the strength of their electromagnets by using more coils of wire. they recorded the class average of their results in the data table seen here. ms. owens asked her students to graph their data in a line graph. how should the students label the x-axis on their line graph? a) size of battery b) number of paper clips c) number of coils of wire d) strength of electromagnet
Answers: 2
Chemistry, 22.06.2019 23:40
The kw for water at 0 °c is 0.12× 10–14 m2. calculate the ph of a neutral aqueous solution at 0 °c.
Answers: 2
Chemistry, 23.06.2019 06:30
The velocity of any object depends upon a) the location of the object. b) the location of the observer. c) which measurement tools are used. d) the relative motion of the observer.
Answers: 1
45. What is the pH of the solution which results from mixing 150 mL of 0.50 M
CH, CO2H(aq) and 150...
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