View the step-by-step solution to:

Question

# I need help to answer these questionsi am not sure what to

Test tube
Temp. at which
Crystals form
Grams of KNO3 calculated grams
per 5 ml water of KNO3 per
100 ml of water
A
1009
B
58
4
80 g
C
49
3
60 9
D
24
2
40 g
Analysis and Conclusions
1. If 5 grams of KNO, were dissolved in 5 ml of water in test tube A,
how many grams of KNO, would have to be dissolved in 100ml of
water to give the same proportion? _[CO- How many grams in test
tube B? _ 89 In test tube C? 60g In test tube D?_ 40q
Record these answers in the appropriate column in data table.
2. Prepare a graph of your data. Use the vertical axis for grams of KNO3
per 100ml of water and the horizontal axis for temperature. Your
graph should have a total of four experimental points.
3. Connect your data points with a solid line. Then use a dotted line to
extend the smooth line to O'C. The line you have just drawn is called
a solubility curve. It can be used to determine the solubility of KNO3
at any given temperature. According to your curve, what is the
solubility in grams/100ml of water of KNO,at 0.C?
4. What can you say about the shape of the solubility curve for KNO3?

Test Tube
Temp at with Grams of KNO3
Calculate grams of
cristal forme
per 5 mL of water
|KNO3 per 100 ml Water
A
60
5
100
B
58
4
80
C
49
3
60
B
24
2
40
grams of KNO3 per
120
100 mL of water
100
80...

### Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

### -

Educational Resources
• ### -

Study Documents

Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

Browse Documents