#1.

There are 4.9 mL in 1 tsp.

Child takes 2 tsp (2 x 4.9 =10.8 mL) of medicine per day.

To get the answer, you need to find out how many times 10.8 goes into 500mL (500 / 10.8 = ?)

#2.

First convert the mileage into meters.

(One mile = 1609 meters)

So 8.6 x 10^10 mi x 1609 m per mi = ? meters

Next, find out how long it takes to get there. Convert 100,000 m/s into m/year.

(a) 100,000 m/s x 60 s/min =

(b) multiply your answer to (a) x 60min/hr =

(c) multiply your answer to (b) x 24 hrs/day =

(d) multiply (c) x 365 day/yr

(Sorry, no calculator in front of me)

Finally, take your first answer (the # of meters) and divide it by your final answer to (d) above. This will tell you how many years it will take.

#3

I know that 1 micrometer = 0.0001 centimeters, so do that first:

(a) 3.23 micrometers x 0.0001 cm = ?

Next, convert cm to in (0.39 in = 1 cm)

(b) take your answer to (a) x 0.39 in = ?

Finally, find out how many times your answer to (b) goes into 8 inches.

(c) 8 inches divided by (answer b) = # of sheets of paper!

Like I said, I don’t exactly have a calculator in front of me so you’ll have to try the calculations yourself…. HOPE THIS HELPS!

a million. iii). {i’m going to cut back the concentration and ii won’t impression it. a greater acceptable gas rigidity will force greater into the water. See Le Chatelier’s theory} 2. Molality (no longer molarity) is the form of moles of solute in step with kilogram of solvent (no longer answer). A 13.80 two wt% answer is 13.82g in step with a hundred g of answer = 13.80 two g in step with 86.18 g of solvent = a hundred and sixty.36g in step with kg of solvent a hundred and sixty.36 g of glucose is 0.89 moles, so the molality is 0.89 3. NH4+ is right, yet 2 of them tie up with one SO4, so its SO4–