Answer the following question given this paragraph: Hydrocarbons are compounds that contain only carbon and hydrogen atoms. The smallest hydrocarbon, methane (CH 4 ), contains just one carbon atom and four hydrogen atoms. Larger hydrocarbons contain many more. Hydrocarbons with four or more carbon atoms can have different shapes. Although they have the same chemical formula, with the same numbers of carbon and hydrogen atoms, they form different compounds, called isomers . Isomers are compounds whose properties are different because their atoms are bonded together in different arrangements. Q: What do you call compounds whose properties are different because their atoms are bonded together in different arrangements? Choices: - isotopes - mixtures - ionic compounds - isomers A:
isomers
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
Q: Answer the following question given this paragraph: Enzymes are proteins that speed up biochemical reactions in cells. Antibodies are proteins that target pathogens for destruction. Q: What are the proteins called that speed up biochemical reactions in cells? Choices: - peptides - hormones - carbohydrates - enzymes A:
A: enzymes
Question: Answer the following question given this paragraph: A nerve impulse begins when a neuron receives a chemical stimulus. The impulse travels down the axon membrane as an electrical action potential to the axon terminal. The axon terminal releases neurotransmitters that carry the nerve impulse to the next cell. Q: What begins when a neuron receives a chemical stimulus? Choices: - a induce impulse - a metabolism impulse - nerve reaction - a nerve impulse A:
Answer: a nerve impulse
*Question*
Answer the following question given this paragraph: Metalloids are the smallest class of elements, containing just six elements. They fall between metals and nonmetals in the periodic table. Q: What is the smallest class of elements? Choices: - halogens - noble gases - synthetics - metalloids A:
**Answer**
metalloids
Answer the following question given this paragraph: Generators change the kinetic energy of a spinning turbine to electrical energy in a process called electromagnetic induction. You can read about generators and how they work in the chapter "Electromagnetism. ". Q: Through a process called electromagnetic induction, generators change what energy form of a spinning turbine to electrical energy? Choices: - potential - seismic - electric - kinetic A:
kinetic