Exams & Certification

What is the formal charge on each atom in CBr2F2? a. C = 0, Br = 0, F = 0 b. C = 0, Br = -1, F = +1 c. C = 0, Br = +1, F = -1 d. C = -2, Br = +1, F = +1 e. C = +4, Br […]

Find an equivalent fraction to 5/ 12 Answer: An equivalent fraction to 5/12 is 10/24. Explanation An equivalent fraction is a fraction that represents the same value or proportion as another fraction, even though it has a different numerator and denominator. Imagine cutting a cake into 12 equal slices and taking 5 of them (5/12). If you then cut

What is the oxidation number of sulfur in the HSO4 The Correct Answer and Explanation is: The oxidation number of sulfur in the hydrogen sulfite ion (HSO₃⁻) is +4. Explanation: To determine the oxidation number of sulfur in HSO₃⁻, we follow these steps: (+1)+(x)+3(−2)=−1(+1) + (x) + 3(-2) = -1 1+x−6=−11 + x – 6

What is the oxidation number of sulfur in theion? Seleccione una:a. +2b. +6c. +1d. -2e. +4 Correct Answer: b. +6 Explanation: To determine the oxidation number of an element within a polyatomic ion, we use a set of established rules. The core principle is that the sum of the oxidation numbers of all the atoms

A 6.95 gram sample of radioactive nobelium-259 has a half-life of 58 minutes. How much nobelium-259 remains after 2 hours and 54 minutes? Hint: Find the number of half-lives that have passed, then reduce the initial amount by half (divide by 2) for every half-life that passed. Or complete the table: Amount of Amount of

Define adjunctive behavior. What other term is used to refer to this class of behavior? Correct Answer Definition: Adjunctive behavior is an excessive and stereotyped pattern of behavior that emerges as a side effect of an intermittent schedule of reinforcement. This behavior is not required by the reinforcement contingency itself but appears reliably during the interval

How many bits and bytes are required to store the following word The Correct Answer and Explanation is: To determine how many bits and bytes are required to store the word “Generate,” we need to analyze how text is stored in digital systems. Storage Calculation Detailed Explanation Text data in computers is stored as binary

What business practice contributed most to Andrew Carnegie’s ability to form a monopoly? Correct Answer: Vertical Integration Explanation The business practice that most significantly enabled Andrew Carnegie’s dominance in the steel industry was his masterful implementation of vertical integration. This strategy involves controlling every phase of the production process, from raw materials to finished product. For

Provide some background on Andrew Carnegie and how he got his start in business. How did he get his start in the iron and steel industry and how did the Carnegie Steel Company come to dominate this industry The Correct Answer and Explanation is: Andrew Carnegie was a Scottish-American industrialist who became one of the

How many cubic centimeters are there in a liter? A. 100 B. 10 C. 1,000 D. 10,000 The correct answer is C. 1,000 cubic centimeters in a liter. Explanation A liter is a fundamental unit of volume in the metric system, commonly used to measure liquids. One liter is defined as the volume occupied by