According to the National Heart, Lung, and Blood Institute, LDL-cholesterol levels of less than 130 mg of LDL-cholesterol per deciliter of blood are desirable for heart health in humans. If, on average, a human has 4.7 L of whole blood, what is the maximum number of grams of LDL-cholesterol that a human should have?

Q: Administration of digitalis, a drug used to control atrial fibrillation in heart patients, must be…

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Q: A particular beer is 6.50 % ethanol by volume (C₂H₆O). If a single bottle of beer contain 750.0 mL…

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Q: Recently the CDC changed the ‘level of concern’ in children with exposure to lead to 5 micrograms…

A: Since,

Q: If the average person eats 0.75lbs of turkey on Thanksgiving, how much tryptophan are they consuming…

A: Mass of turkey consumed by an average person = 0.75 lbs Amount of tryptophan in 100 g of turkey =…

Q: While in Europe, if you drive 115 km per day, how much money would you spend on gas in one week if…

A: Given mileage of car is 33miles per gallon.  Distance travelled per day is 115 km.  Price of gas is…

Q: 13) 16.0 grams of a certain food contain 130 calories. How many grams of this food would you need in…

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Q: A pediatrician prescribes the antibiotic amoxicillin to treat a 3year-old child suffering from an…

A: Given : Weight of child = 29 lbs Amount of drug per mL of liquid = 25 mg drug/mL  Dose of drug = 10…

Q: One gallon of gasoline in an automobile's engine produces on the averahe 9.5kg of carbon dioxide,…

A: Solution One gallon of gasoline produces an average of 9.5 kg of carbon dioxide. There are 40…

Q: What distance in miles can you drive in your new Prius hybrid, if your car gets 48.0 miles per…

A: The given question is based on dimensional analysis. Dimensional analysis is the analysis of the…

Q: A particular beer is 6.50% ethanol by volume (C₂H₂O). If a single bottle of beer contains 750.0 mL…

A:

Q: If all volume measurements were made with graduated cylinders instead of pipets, how would the…

A: This can be explained by the extend of the accuracy of graduated cylinders and pipets. When the…

Q: You are renting a car which is reported to achieve 13.7 km/L. How many miles will you be able to…

A: Given Mileage = 13.7 km/L Volume = 11.0 gallons 1 gallon = 3.785 L 11 gallons = 41.64 L

Q: Aqueous hydrochloric acid (HCI) will react with solid sodium hydroxide (NaOH) to produce aqueous…

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Q: 1. Aspirin has been recommended to minimize the chance of hearts attacks in persons who have already…

A: According to Q&A guidelines of Bartleby, we are supposed to answer only the first question out…

Q: What is the density of a piece of wood that weighs 50. g and displaces 2.5L of water?

A: Density:The ratio of mass of a sample to its volume is said to be the density.

Q: A hybrid electric vehicle has an EPA gas mileage rating of 52 mi/ gal in the city. How many…

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Q: t takes a runner 37 minutes to complete a 10 km course. What is his/her average speed in miles per…

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Q: If 20.0 Cal make an ounce, how many ounces of formula should a baby drink per day if the energy need…

A: 1 ounce = 20.0 cal Since per day a baby drink 1.50 ×103 cal No of ounces = 1.50 ×103/20 = 75

Q: When chlorine gas is bubbled into a solution of sodium bromide, the sodium bromide reacts to give…

A:

Q: If your front lawn is 16.0 feet wide and 20.0 feet long, and each square foot of lawn…

A: Since front lawn dimension given as –Width =16 feetsLength=20feetsSo area of lawn = width ×length

Q: Assume household vinegar contains 5% acetic acid by weight and that the density of vinegar is the…

A: Given :  Volume of household vinegar = 404 ml  Density of vinegar = 1 gm/ml  Weight % of acetic acid…

Q: How long a trip, in kilometers, can be made on one full tank of gasoline? Express your answer to two…

A: Two numerical problems based on unit conversion, which are to be accomplished.

Q: In Mexico, avocados are 48 pesos per kilogram. What is the cost in cents of an avocado that weighs…

A: Given: Cost of Avocados = 48 pesos/Kg. And weight of avocado given = 0.25 lbs.

Q: GenAlex Medical, a leading manufacturer of medical laboratory equipment, is designing a new…

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Q: If your front lawn is 22.0 feet wide and 20.0 feet long, and each square foot of lawn accumulates…

A: Given,Area of lawn = 22.0feet wide and 20.0feet long.Mass of a snowflake = 1.60mg.1150 new…

Q: conversion convert 130 feet per second to miles per hour (round to whole m.p.h.)

A: Convert 130 feet per second to miles per hour (round to whole m.p.h.)

Q: A pheromone is a type of volatile compound produced by a variety of insect species for chemical…

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Q: If your front lawn is 21.0 feet wide and 20.0 feet long, and each square foot of lawn accumulates…

A: As given that each square feet of lawn are accumulated 1450 new snowflakes per minutes.Calculate the…

Q: When chlorine gas is bubbled into a solution of sodium bromide, the sodium bromide reacts to give…

A: The molecular weights: Chlorine gas is,Cl2  = 70.9 g/mol Sodium bromide, NaBr = 102.9 g/mol. Sodium…

Q: The distance between two cities is 1500 kmkm. How long will it take, in hours, to drive from one…

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Q: A typical human body contains between 9 and 12 pints of blood. A woman's body contains 11.55 pints…

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Q: A student notices that her father (who is trying to lose weight) is drinking a lot of diet Pepsi…

A: Given that, FDA recommendation of aspartame = 50 mg/ per kg body weight per day. Weight of father =…

Q: A particular beer is 6.50 % ethanol by volume (C₂H₆O). If a single bottle of beer contain 750.0 mL…

A:

Q: What is the volume in milliliters of 7.22 grams of acetone? Acetone (fingernail-polish remover) has…

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Q: How much money will it cost you to drive 145.0 miles if your car gets 25.70 miles per gallon and gas…

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Q: Maalox is the trade name for an antacid and antigas medication used for relief of heartburn,…

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Q: If your front lawn is 17.0 feet wide and 20.0 feet long, and each square foot of lawn accumulates…

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Q: You are renting a car which is reported to achieve 12.5 km/L. How many miles will you be able to…

A: Given : car has an average rate of fuel consumption = 12.5 Km/L hence it means, per litre of the…

Q: When chlorine gas is bubbled into a solution of sodium bromide, the sodium bromide reacts to give…

A: Law of mass action says that mass of any substance can neither be created nor be destroyed in a…

Q: If 20.0 Cal make an ounce, how many ounces of formula should a baby drink per day if the energy…

A: Given 1 ounce gives = 20.0 Cal energy

Q: If the gas mileage of a Honda Civic car is 38 miles per gallon how many liters of gasoline would the…

A: Given : Distance to be travelled = 37.2 Km And mileage of car = 38 miles per gallon.

Q: how much total cholesterol (in grams) is present in their body?

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Q: A newborn baby eats 8 times a day. At each feeding, he eats 2.5 ounces of formula. How many days…

A: Given, 1 feed = 2.5 ounces total feeding in one day = 8 times total ounces in 1 day = 2.5 ounces/…

Q: Human fat has a density of 0.912 g cm-3.  How much volume (in cm-3) is gained by a person who gains…

A: The density of the human fat is = 0.912 g cm-3 The mass of the fat is = 2.09 kg The volume gain by…

Q: You are renting a car which is reported to achieve 10.1 km/l how many miles will you be able to…

A: Conversion of units: 1 gallon = 3.785 L 1 km = 0.62 mile

Q: Low-density lipoprotein (LDL), sometimes called “bad cholesterol,” is also measured in a routine…

A: Given  Mass of LDL sample         = 0.380 gram  Volume of LDL sample     = 0.362 mL  density   = ?

Q: A sprinter set a high school record in track and field, running 200.0 m in 20.5 s. what is the…

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Q: If your front lawn is 17.0 feet wide and 20.0 feet long, and each square foot of lawn accumulates…

A: Given : length of lawn = 20.0 ft Width of lawn = 17.0 ft  rate of snowflakes getting accumulated =…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.