t takes a runner 37 minutes to complete a 10 km course. What is his/her average speed in miles per hour? If 1 liter of gas costs $1 Canadian, what is the price in $US/gallon? (assuming $1CAN = $0.75 US) A patient is prescribed 1.0 g of a medication to be taken two times a day. If the medicine is available in 200−mg tablets, how many tablets are needed in a 24−hour period?

t takes a runner 37 minutes to complete a 10 km course. What is his/her average speed in miles per hour? If 1 liter of gas costs $1 Canadian, what is the price in $US/gallon? (assuming $1CAN = $0.75 US) A patient is prescribed 1.0 g of a medication to be taken two times a day. If the medicine is available in 200−mg tablets, how many tablets are needed in a 24−hour period?

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter2: Chemical Compounds

Section: Chapter Questions

Problem 105QRT

See similar textbooks

Similar questions

The volume of seawater on Earth is about 3.3 x 108 mi3. If seawater is 3.5% sodium chloride by mass and has a density of 1.03 g/mL, what is the approximate mass of sodium chloride, in tons, dissolved in the seawater on Earth (1 ton = 2000 lb)?
Earth’s oceans contain about 1.31 × 109 km3 of water. One tablespoon is equal to 15 cm3. If you could remove 6.02 × 1023 tablespoons of water from Earth’s oceans, would you completely drain them?
A student dissolved 230.8 grams of cesium chloride in 100.0 grams of 90 °C water. The student then cooled that solution to 20 °C . That cooled solution formed a solid (or "precipitate"), and after separating and drying this solid the student found that the solid weighed 43.8 grams. What is the solubility of cesium chloride in water at 20 °C ? < calculate your answer as grams of cesium chloride per 100 grams of water, but DO NOT include your units in your answer>
Dimensional Analysis is a way of doing numerical "book-keeping" when converting quantities or performing calculations. • When converting quantities from one unit to another, conversion factors are used. Solving with Dimensional Analysis and Multiple Units: If I am in Canada where the price of gas is $1.022 USD·L1, how much will it cost me to fill up my gas tank if I travelled 125 km? • Let's also assume that my car gets an average of 30.0 miles/gallon.
A chemist prepares a solution of aluminum sulfite (Al, (SO,).) by measuring out 1.5 × 10“ umol of aluminum sulfite into a 3 300. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in µmol/L of the chemist's aluminum sulfite solution. Round your answer to 2 significant digits.
A medical doctor gives the order to administer dopamine at a rate of 3.0 mcg/kg⋅min (mcg is the abbreviation for microgram (µg) in a medical context). The dopamine is supplied as a mixture of 400.0 mg dopamine in 250.0 mL of a dopamine solution. The patient weighs 73 kg. What is the infusion rate of the dopamine into her body (in units of mL/hour)?
TUMS is a popular remedy for acid indigestion. A typical TUMS tablet contains calcium carbonate plus some inert substances. When ingested, it reacts with the gastric juice (hydrochloric acid) in the stomach to give off carbon dioxide gas. When a 1.343−g tablet reacted with 40.00 mL of hydrochloric acid (density = 1.140 g/mL), carbon dioxide gas was given off, and the resulting solution weighed 46.699 g. Calculate the number of liters of carbon dioxide gas released if its density is 1.81 g/L.
Fluoridation is the process of adding fluorine compounds to the drinking water. Fluoridated water can help decrease tooth decay in the population. A concentration of 1 ppm of fluorine is typically required to provide adequate amounts. While daily water consumption per person is 151.0 gallons, most people only consume 7.6 of this water; the rest is used for cleaning or gardening. What percent of the sodium fluoride is “wasted”?
A chemist prepares a solution of nickel(1I) chloride (NICI,) by measuring out 1.2 x 10" umol of nickel(1I) chloride into a 250. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmol/L of the chemist's nickel(11) chloride solution, Round your answer to 2 significant digits.
A chemist prepares a solution of copper(II) fluoride (CuF,) by weighing out 0.0245 g of copper(II) fluoride into a 50. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in g/dL of the chemist's copper(II) fluoride solution. Be sure your answer has the correct number of significant digits. g x10 dL ?
The concentration of PSA (prostate-specific antigen) in the blood is sometimes used as a screening test for possible prostate cancer in men. The value is normally reported as the number of nanograms of PSA per milliliter of blood. A PSA concentration of 1.7 ng/mL1.7 ng/mL is considered low. Express that value in terms of the units shown. PSA= g/L PSA= kg/m3 PSA= mg/L
The dosage of quinine when a 145−lb adult takes a 200.−mg tablet is equivalent to _____ μg drug per kg of body weight.