Exams & Certification

Select all statements that show correct reasoning for finding 15 divided 2/9 (multiple answers) A. Multiply 15 by 2, then divide by 9. B. Multiply 15 by 9, then divide by 2. C. Multiply 15 by , then multiply by 2. D. D. Multiply 15 by 9, then multiply by 1/2 The Correct Answer and […]

Write 3.5 as a mixed number and as an improper fraction. Write your answers in simplest form. mixed number: improper fraction: The Correct Answer and Explanation is: mixed number: 3 1/2improper fraction: 7/2 Explanation Understanding how to represent a number in different forms—such as a decimal, a mixed number, or an improper fraction—is a fundamental concept in

finding missing angles in triangles worksheet answers house The Correct Answer and Explanation is: Worksheet Answers: The Geometry House Explanation: The Angle Sum Property of Triangles To find the missing angles in the house diagram, we use a fundamental rule of geometry: The sum of the interior angles in any triangle always equals 180 degrees. This principle

wich of the following is the hottest layer of the earth? a. crust b. mantle c. inner core d. outer core The Correct Answer and Explanation is: The correct answer is c. inner core. The Earth is structured in several concentric layers, and as one descends from the surface to the center, both temperature and pressure

Suppose it is winter and the system is filled with methanol. The density of methanol is 0.80 g/cm3. What would be the increase in temperature of the methanol if it absorbed 836.0 kJ of heat The Correct Answer and Explanation is: Based on the data, the increase in temperature of the methanol would be 413.0 °C.

Calculate the height of a column of methanol that would be supported by atmospheric pressure. The density of methanol is 0.787 g/cm. To receive full credit for you answer, you must show your calculations (include the units in all of your conversions), and report the correct number of significant figures. For the toolbar, press ALT+F10

Giving reasons, explain which of the following can form hydrogen bonds with water? (a) CHOCH(b) CH(c) F(d) HCOOH (e) Na(f) CHOH 3 The Correct Answer and Explanation is: Of the options provided, the following can form hydrogen bonds with water:(a) CH₃OCH₃, (c) F⁻, (d) HCOOH, and (f) C₂H₅OH Explanation A hydrogen bond is a special,

water (150 mL) having a density of 1 g/cm. (a) Determine the volume percent of methanol (b) Determine the mass percent of water.m is mixed with water (150 mL) having a density of 1 g/cm. (a) Determine the volume percent of methanol (b) Determine the mass percent of water. The Correct Answer and Explanation is:

Giving reasons, explain which of the following can form hydrogen bonds with water? (a) CHOCH(b) CH(c) F(d) HCOOH (e) Na(f) CHOH 3 The Correct Answer and Explanation is: Correct Answer The substances that can form hydrogen bonds with water are (a) CH₃OCH₃, (c) F⁻, (d) HCOOH, and (f) C₂H₅OH. Explanation A hydrogen bond is a strong

Dimethylether (CH3OCH3) acetic acid (CH3COOH)Which of the following molecules can form hydrogen bonds? methanol (CH3OH) ethane (CH3CH3) dimethylether (CH3OCH3) acetic acid (CH3COOH) The Correct Answer and Explanation is: Correct Answer: Acetic acid (CH3COOH) Explanation The physical properties of molecular substances, such as boiling point, are primarily determined by the strength of their intermolecular forces (IMFs). These