Chapter 9, Problem 10P

VISCOSITY Make an analysis about this table LIQUID DISTANCE TIME COOKING OIL 45 CM 20.47

pls solve this problem with in 1 hour

The pharmacist attempts to weigh 120 mg of codeine sulfate on a balance with a sensitivity requirement of 6 mg. Calculate the maximum potential error in terms of percentage.

Please answer and adhere to significant figures where it is applicable. Thank you very much for your assistance and alike is guaranteed.

A certain process can plate out 80.6 micrometers ^3 of gold onto a metallic surface per second. How long will it take to create a 0.010 micrometer thick coating on a surface area of 0.30 cm^2 using this process?

A sample of a polyethylene rope weighs 15.12 g per cm. If each chaincontains 7000 repeat units, calculate, the number of polyethylene chains ina 3 m rope.

What will be the rise in temperature in 30 minutes of a block of copper of 500-gram mass if it is joined to a cylindrical copper rod 20 cm long and 3.0 mm in diameter when a temperature difference of 80 degree Celsius is maintained between ends of the rod? The thermal conductivity of copper is 1.02 cal/cm2-sec-°C/cm (neglect heat losses).

In our chemistry laboratory class, the formula for surface tension given is y=mg/2(pi) x r x f  where y=surface tension, m= mass of the drop, g= gravitational acceleration, pi is 3.1415, r= outer radius of burette, f=correction factor. Now I searched the internet and it says that the unit for surface tension is kg x m/s^2. The problem is I have grams for the mass of the drop and that the outer radius of the burette is in centimeter while the gravitational acceleration is in meter. What will happen is like this: (1 g x 9.8 m/s^2) / 2 (3.1415) x 0.15 cm x 0.74643 (correction factor no unit) As you can see, if I don't cancel m and cm, the unit will be g x cm x m x s^2. However if change the radius of the burette into meter, it will cancel, the unit will be g x s^2 (missing meter).  What can I do to get kg x m/s^2 as the unit for final answer?

The time for water to flow through an Ostwald pipet at 20°C was 298.8 seconds. The density of water at 20°C is 0.9982 and the density of a sample of olive oil is 0.910 g/cm3. The viscosity of water at 20°C is 1.002 cp and the viscosity of the olive oil is 84 cp. How long will it take for the olive oil to flow through the same pipet at 20°C?