Homework Statement
You have a 20% w/v stock solution of a sugar of molecular weight 160 Daltons. How much of this stock solution will you need to use to...
a. prepare 10 ml of solution at 350 mg sugar per ml.
b. 7 ml of solution containing 15 micromoles of sugar
Homework Equations...
Homework Statement
Addition of 2uL of 50mM NaCl to a 30 uL reaction gives a final NaCl concentration of ______ M.
Homework Equations
The Attempt at a Solution
so because you add 2uL to 30uL, the dilution is (2 / 2+30) = 1/16
Then I multiplied the dilution with the concentration...
Hello all, I just want to confirm that I am on the right track for a certain question regarding dilution and concentration
Q: Addition of 2uL of 50mM NaCl to a 30 uL reaction gives a final NaCl concentration of ______ M.
Attempt:
so because you add 2uL to 30uL, the dilution is (2 / 2+30)...
Homework Statement
A 22-cm-long, 1.0-mm-diameter copper wire is joined smoothly to a 60-cm-long, 1.0-mm-diameter aluminum wire. The resulting wire is stretched with 20 N of tension between fixed supports 82 cm apart. The densities of copper and aluminum are 8920kg/m^3 and , 2700 kg/m^3...
Homework Statement
The figure shows two masses hanging from a steel wire. The mass of the wire is 60.0 g. A wave pulse travels along the wire from point 1 to point 2 in 24.0 ms.
What is mass m?
Homework Equations
v = sqrt(Ts/mu)
The Attempt at a Solution
T=mu*v^2
t = 0.024s
d = 4m
v =...
Homework Statement
A physics professor demonstrates the Doppler effect by tying a 600 Hz sound generator to a 1.0-m-long rope and whirling it around her head in a horizontal circle at 100 rpm.
Homework Equations
f =fo(1/ (V +/- Vsource/V))
The Attempt at a Solution
T =...
Homework Statement
Give the formula of a fluoride molecule that:
is octahedral in shape
is trigonal bypyramidal in shape
is T-shaped
...etc
The Attempt at a Solution
Ok, I'm not really actually looking for an answer, because I already know the answers are SF6, PF5, and ClF3. And I have...
Homework Statement
This is a question from my lab manual
v=Cmu^aT^b (4.3)
Use dimensional analysis of equation (4.3) to determine the exponents a and b.
Homework Equations
i know that the proper equation is
v=sqrt(T/mu)
The Attempt at a Solution
I tried dimensional to get some...