Chapter 1, Problem 1.88E

Decide whether each proposed multiplication or division of measurements is possible. If it is possible, write the result in the last column of the table. proposed multiplication or division Is this possible? result 480. mg O yes = ? 0.080 g O no O yes (3.0 g) · (0.029 kg) = ? O no O yes (7.0 m) · (6.0 s) = ? O no O Ooo

The composition of a mixture of potassium chlorate and potassium chloride is to be determined. A 9.5 gram sample of the mixture is heated until the creation of oxygen gas stops. If the sample mass after heating is 7.04 grams, what is the percent by mass of potassium chlorate in the mixture? Report your answer with 3 significant figures.

A sunscreen preparation contains 2.50% by mass benzyl salicylate. If a tube contains 4.0 ounces of sunscreen, determine how many kilograms of benzyl salicylate are needed to manufacture 325 tubes of sunscreen. Conversion: 2.205 lb= 1 kg.  16.0 oz = 1 lb

2. The picture in the introduction shows that the mass of a crucible and lid was determined to be 22.1504 g. The hydrate was placed into the crucible, and now the crucible with lid and hydrate weighed 24.2901 g. The hydrate in the crucible was then heated and all water was removed. Once cooled, the crucible with lid and dried hydrate weighed 23.0063 g. a) Calculate the mass of the hydrate. b) Calculated the mass of water lost. c) Calculate the mass percentage of water in the hydrate. percent (%) composition = of water mass of water lost х 100 mass of entire hydrate

Franklin was performing an experiment by combining hydrochloric acid and sodium hydroxide. He measured the mass of his reactant materials to be 35g. The reaction resulted in the production of salt and water. He reported that his products weighed 32g. Which best describes the results of Franklin’s experiment? No error occurred, some of the products are always lost as heat.  An error occurred, the mass of the reactants should equal the mass of the products. An error occurred, the products should weigh more than the reactants. No error occurred, water is not weighed when determining the weight of the products.

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>

Blood alcohol content is a measure of alcohol in the blood as a percentage. It is calculated in grams per 100 mL of blood, so a BAC of 0.08 means your blood is 0.08% alcohol by volume. what is the total mass of alcohol (in grams) that is present for the same adult male whose total blood volume is 5.6L?

You are making a rubbing alcohol (=isopropyl alcohol) solution to disinfect surfaces. You start with 323.1 mL of a 7.465 M isopropyl alcohol solution, and dilute it with pure water. After the dilution, you end up with a 1.856 M solution. What is the final volume of the solution after the water has been added? Enter your answer in the units of L (liters), do not enter the unit.

A 15.2-g sample of sodium carbonate is added to a solution of acetic acid weighing 19.4 g. The two substances react, releasing carbon dioxide gas to the atmosphere. After reaction, the contents of the reaction vessel weighs 28.7 g. What is the mass of carbon dioxide given off during the reaction? Mass =