Finally, useAvogadro's numberto determine the number of molecules in a drop of water. Avogadro's number tells us there are 6.022 x 1023molecules of water per mole of water. So, next we calculate how many molecules there are in a drop of water, which we determined contains 0.002775 moles:...
Question: How many microliters are in 45 liters? Liter A liter is a unit of measurement in the metric system used to measure liquids. When dealing with smaller liquids, the common form of measurement is microliters or milliliters. When doing the conversion from a large measurement quantity ...
How many moles of {eq}\rm KMnO_4 {/eq} are present in {eq}300\ mL {/eq} of a {eq}4.90 \times 10^{-2}\ M {/eq} solution? Molarity Molarity is definitely the number of moles of the solute per unit volume of the solution. This is given by an equation ...
1. The density of mercury is 13.6 g/mL. What is its density in lbs/L? (Hint: 1 lb = 0.454 kg). 2. If you are driving at a speed of 55.0 miles per hour, then what is your speed in meters per second? (H How many moles of chloroethyle...
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How many milliliters are in 200 cubic centimeters (cc)? Cubic Centimeter (cc) A cubic centimeter is a unit of volume corresponding to the volume of a cube that is 1 centimeter (cm) on each side i.e. having dimensions 1 cm x 1 cm x 1 cm. The cubic centimeter is an SI derived ...
You know what your cholesterol levels are, but what do they mean? In the U.S., the numbers are measured by milligrams (mg) and deciliters (dL). The lab looks at how many milligrams of cholesterol are in 1 deciliter of blood, and they come up with a number of mg/dL. ...
Calculate Molality: moles solute per kilogram solvent symbol: m m = moles / kilogram Example: What is the molality of a solution of 3 grams of KCl (potassium chloride) in 250 ml of water? First, determine how many moles are present in 3 grams of KCl. Start by looking up the number ...
First,how many moles of NaOH were put into the solution?We can find this by multiplying the total volume of NaOH solution by its molarity: (0.02052 L NaOH) x (0.173 mol NaOH / 1 L NaOH) = 3.55 x 10-3mol A total of 3.55 x 10-3moles of NaOH were put into the solution.Since th...
The concept of moles and equivalents, and thus millimoles andmilliequivalents, underlies this relationship, and it is of vital importance in medicine and clinical pharmacology. Moles and Molecular Weight In an example of a simple chemical reaction, one atom of potassium (K) can react with one ...