The questions asks us to: Determine the molar concentration of I- in a reaction mixture. The reaction was as follows (data):
20 mL of .1 M KI
0 mL of .1 M KCl
10 mL of .003 M Thiosulfate
20 mL of .10 M Persulfate
I did the following:
20 ml I- x (1 L / 1000 mL) = .02 L I-
.02 L I- x (.1 mol /...
1.
A swimmer heads directly across a river, swimming at 1.7 m/s relative to the water. She arrives at a point 44 m downstream from the point directly across the river, which is 76 m wide.
(a) What is the speed of the river current?
1 m/s
(b) What is the swimmer's speed relative to the...
Now I'm confused with what formula I can use.
I think I'll have to get walked through the problem at the workshops on Monday.
Thanks guys... Sorry I couldn't do anything with your expertise.
Yeah I can't do B, I fail at this.
So far I have this:
For segment 1 I have
a = 0
t = .45
d = x
v0 = ?
v = ?
Segment 2
a = -6.7
t = ?
d = 3.8 - x
v0 = ?
v = 0
Do I solve for v0 in segment two, and put that in segment 1 to find d... ?
OK ty on question A it was obvious..
Question B I am trying right now.
The equations we use are the usual three of motion and utilize average speed, average velocity.
Question A:
This one is easy but my answer is coming out wrong, maybe my signs are wrong. The question is as follows:
A ball is launched directly upward from ground level with an initial speed of 19 m/s.
How many seconds after launch is the ball 8 m above the release point?
I set...
Question A:
This one is easy but my answer is coming out wrong, maybe my signs are wrong. The question is as follows:
A ball is launched directly upward from ground level with an initial speed of 19 m/s.
How many seconds after launch is the ball 8 m above the release point?
I set...