Answer the following question given this paragraph: NaN3 is 1.847 g/cm . What is the volume of the gas produced compared to the solid reactant? Suggest a plausible reason to explain why skin burns can result from the inflation of an airbag during an automobile accident. Under basic conditions, the reaction of hydrogen peroxide (H 2O2) and potassium permanganate (KMnO4) produces oxygen and manganese dioxide. During a laboratory exercise, you carefully weighed out your sample of KMnO4. Unfortunately, however, you lost your data just before mixing the KMnO 4 with an H2O2 solution of unknown concentration. Devise a method to determine the mass of your sample of KMnO4 using excess H2O2. Carbonated beverages are pressurized with CO 2. In an attempt to produce another bubbly soda beverage, an intrepid chemist attempted to use three other gases: He, N 2, and Xe. Rank the four beverages in order of how fast the drink would go "flat" and explain your reasoning. Which beverage would have the shortest shelf life (i. , how long will an unopened bottle still be good)? Explain your answer. ♦️ Urea is synthesized industrially by the reaction of ammonia and carbon dioxide to produce ammonium carbamate, followed by dehydration of ammonium carbamate to give urea and water. This process is shown in the following set of chemical equations:. Q: What are carbonated beverages pressurized with? Choices: - helium - dioxide - hydrogen - co2 A:
co2
(Question)
Answer the following question given this paragraph: Minerals Minerals in food are inorganic compounds that work with other nutrients to ensure the body functions properly. Minerals cannot be made in the body; they come from the diet. The amount of minerals in the body is smallonly 4 percent of the total body massand most of that consists of the minerals that the body requires in moderate quantities: potassium, sodium, calcium, phosphorus, magnesium, and chloride. The most common minerals in the body are calcium and phosphorous, both of which are stored in the skeleton and necessary for the hardening of bones. Most minerals are ionized, and their ionic forms are used in physiological processes throughout the body. Sodium and chloride ions are electrolytes in the blood and extracellular tissues, and iron ions are critical to the formation of hemoglobin. There are additional trace minerals that are still important to the body's functions, but their required quantities are much lower. Like vitamins, minerals can be consumed in toxic quantities (although it is rare). A healthy diet includes most of the minerals your body requires, so supplements and processed foods can add potentially toxic levels of minerals. Table 24.5 and Table 24.6 provide a summary of minerals and their function in the body. Q: What is critical for the formation of hemoglobin? Choices: - salts - proteins - platelets - iron ions A:
(Answer)
iron ions
Ques: Answer the following question given this paragraph: Nuclear symbols are used to write nuclear equations for radioactive decay. Let's consider the example of the beta-minus decay of thorium-234 to protactinium-234. This reaction is represented by the equation:. Q: What are used to write nuclear equations for radioactive decay? Choices: - trigonometric symbols - critical symbols - radioactive symbols - nuclear symbols A:
Ans: nuclear symbols
(Q).
Answer the following question given this paragraph: In almost all cases, chemical bonds are formed by interactions of valence electrons in atoms. To facilitate our understanding of how valence electrons interact, a simple way of representing those valence electrons would be useful. A Lewis electron dot diagram (or electron dot diagram or a Lewis diagram or a Lewis structure) is a representation of the valence electrons of an atom that uses dots around the symbol of the element. The number of dots equals the number of valence electrons in the atom. These dots are arranged to the right and left and above and below the symbol, with no more than two dots on a side. (It does not matter what order the positions are used. ) For example, the Lewis electron dot diagram for hydrogen is simply. Q: What is a representation of the valence electrons of an atom that uses dots around the symbol of the element? Choices: - watson structure - right structure - time structure - lewis structure A:
(A).
lewis structure
Ques:Answer the following question given this paragraph: Nonpolar-nonpolar interactions occur when two nonpolar liquids are mixed. An example of this is the interaction between toluene and octane (see Figures above and below ). The interactions between a molecule of toluene and a molecule of octane are relatively weak, but so are the toluene-toluene and octane-octane interactions. Because no strong intermolecular forces (like those between water molecules) need to be broken for mixing to occur, no strong interactions need to be formed in order for mixing to be a favorable process. Toluene and octane will form a homogeneous mixture. The phrase "like dissolves like" applies to these mixtures as well. In this case, nonpolar dissolves nonpolar. Q: What occurs when two nonpolar liquids are mixed? Choices: - sediment - nonpolar interactions - refracted - nonpolar interactions - polar-nonpolar interactions - nonpolar-nonpolar interactions A:

Ans:nonpolar-nonpolar interactions
Ques:Answer the following question given this paragraph: Innate behavior is any behavior that occurs naturally in all the animals of a given species. It doesn't have to be learned, and it occurs in the same way in all members of the species. Examples of innate behaviors include the waggle dance in honeybees and the grasp reflex in human babies. Q: What type of behavior occurs naturally in all animals of a given species? Choices: - stimulated - learned - acquired - innate A:

Ans:
innate