Select the single best answer.Barium ions are highly toxic to the human body, yet barium sulfate is ingested to identifygastrointestinal problems through an X-ray. What property of barium sulfate allows it to be ingestedwithout producing aqueous barium ions in the body?OOIt is an acid.It is soluble in water.It is a molecular compound.It produces elemental barium when dissolved in water.It is insoluble in water.

Barium ions are toxic when it's in ionic form in body. So by avoiding ionic form we can use it for…

Select the single best answer. Barium ions are highly toxic to the human body, yet barium sulfate is ingested to identify gastrointestinal problems through an X-ray. What property of barium sulfate allows it to be ingeste without producing aqueous barium ions in the body? 0 0 It is an acid. It is soluble in water. It is a molecular compound. It produces elemental barium when dissolved in water. It is insoluble in water.

Select the single best answer. Barium ions are highly toxic to the human body, yet barium sulfate is ingested to identify gastrointestinal problems through an X-ray. What property of barium sulfate allows it to be ingeste without producing aqueous barium ions in the body? 0 0 It is an acid. It is soluble in water. It is a molecular compound. It produces elemental barium when dissolved in water. It is insoluble in water.

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter6: Chemical Reactions: An Introduction

Section: Chapter Questions

Problem 20QAP: Many over-the-counter antacid tablets are now formulated using calcium carbonate as the active...

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Many over-the-counter antacid tablets are now formulated using calcium carbonate as the active ingredient, which enables such tablets to also be used as dietary calcium supplements. As an antacid for gastric hyperacidity, calcium carbonate reacts by combining with hydrochloric acid found in the stomach, producing a solution of calcium chloride, converting the stomach acid to water, and releasing carbon dioxide gas (which the person suffering from stomach problems may feel as a “burp”). Write the unbalanced chemical equation for this process.
A substance disolves well in water whcih of the following can be concluded about the substance
Images attached show lead solid in aqueous hydrochloric acid. After looking at the images cite macroscopic evidence that supports that this is a chemical change. Next, cite microscopic evidence to support that this is a chemical change. If a chemical change occurred, write the product formulas after the arrow. Pb (s) + HCl (aq)
Suppose a mixture is made by mixing together 10 drops of a water solution of a halogen, 10 drops of a water solution of the potassium salt of the halogen and 10 drops of hexane. Upon shaking, the hexane layer takes on a distinct purple color. Which of the following pairs could not represent the halogen and halogen salt that were mixed? a) I2, KI b) Cl2, KI c) Cl2, KBr d) I2, KCl
Part a) When FeS3 • 2H2O is heated, it gives off water, SO2 and Fe2O3. Is this a chemical or physical change? When CuSO4 • 5H2O is heated, it gives off water and CuSO4. Is this a chemical or physical change? Which of these changes can be easily reversed? Part b) Is the molar ratio of the products is different from the molar ratio in the hydrate formula, has a chemical or physical change taken place?
Describe any visual differences between the hydrated sample and the dried, anhydrous form. How would the following errors affect the empirical formula for the compound? a. The student ran out of time and did not do the second heating. Explain how this error will affect the calculation for the number of moles of water in the hydrate? Will the final answer be artificially high or low? How do you know? b. The student recorded the mass of the cup + sample incorrectly and started with 2.2 g of hydrated compound but used 2.0 g in the calculations. Explain how this error will affect the calculation for the number of moles of water in the hydrate? Will the final answer be artificially high or low? How do you know?
Which of these is NOT true of chemical changes? A) Chemical changes are state changes like a solid turning to aliquid or a liquid turning to a gas. B) Chemical changes can produce heat. C) A chemical change is a change in composition of a substance. D) The rearrangement of chemical bonds is a characteristic of chemical changes. E)Chemical changes result in new substances being formed.
Crime scene investigators keep a wide variety of compounds on hand to help with identifying unknown substances they find in the course of their duties. One such investigator, while reorganizing their shelves, has mixed up several small vials and is unsure about the identity of a certain powder. Elemental analysis of the compound reveals that it is 63.5763.57% carbon, 6.0006.000% hydrogen, 9.2679.267% nitrogen, and 21.1721.17% oxygen by mass. Which of the compounds could the powder be?
Combustion of hydrocarbons such as decane ( C 10 H 22 ) produces carbon dioxide, a "greenhouse gas." Greenhouse gases in the Earth's atmosphere can trap the Sun's heat, raising the average temperature of the Earth. For this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide. A. Write a balanced chemical equation, including physical state symbols, for the combustion of liquid decane into gaseous carbon dioxide and gaseous water. B. Suppose 0.270 kg of decane are burned in air at a pressure of exactly 1 atm and a temperature of 10.0 °C . Calculate the volume of carbon dioxide gas that is produced. Be sure your answer has 3 significant digits.
Metal carbonates decompose to form metal oxides and carbon dioxide. An experiment was done to determine the composition of a mixture of sodium chloride and sodium carbonate. A sample of the mixture with a mass of 5.66 grams was heated until gas production stopped. After the reaction, the sample had a mass of 4.14 grams. Assuming that sodium chloride does not react and that the decrease in mass was due to the creation of CO2 gas, what wass the mass of Na2CO3 in the sample? Report your answer with three significant figures. Na2CO3 → Na2O + CO2
A chemical plant uses electrical energy to decompose aqueoussolutions of NaCl to give Cl2, H2, and NaOH:2 NaCl(aq) + 2 H2O(l)------>2 NaOH(aq) + H2(g) + Cl2(g)If the plant produces 1.5 106 kg (1500 metric tons) of Cl2daily, estimate the quantities of H2 and NaOH produced.
An empty erlenmeyer flask weighs 241.3 g. when filled with water (density - 0.997 g/mol), the flash and its contents weighs 489.1 g. What is the volume of water does the flash hold?