Exams & Certification

Write a formula for the compound that forms between rubidium and each polyatomic ion: Part A Carbonate. Express your answer as a chemical formula. Part B Phosphate. Express your answer as a chemical formula. Part C Hydrogen phosphate. Express your answer as a chemical formula. Part D Acetate. Express your answer as a chemical formula. […]

Which has the highest melting point? CH3OH, CCl4. CH3Cl, KCl, or BCl3 The Correct Answer and Explanation is: Among the given compounds, KCl has the highest melting point. Here’s why: Conclusion: KCl has the highest melting point because it is an ionic compound with very strong electrostatic forces between its ions. In contrast, the other

What is the product of the reaction below? H2 Pd/ BaSO4 HEPT-3-YNE CH3OH A. cis-hept-3-ene B. hept-2-en-3-yne C. trans-hept-3-ene D. n-heptane E. trans-hept-3-yn-4-ol The Correct Answer and Explanation is: The correct answer is A. cis-hept-3-ene.This chemical transformation is a catalytic hydrogenation of an alkyne. The specific set of reagents used—H2 gas, palladium on barium sulfate

Carbon tetrachloride, CCl4, has a higher boiling point than methane, CH4, because… a the dipole-dipole forces in carbon tetrachloride are stronger than they are in methane b the dipole-dipole forces in carbon tetrachloride are weaker than they are in methane c the London dispersion forces in carbon tetrachloride are stronger than they are in methane

what is 4 7/8 in decimal form The Correct Answer and Explanation is: To convert the mixed number 4 7/8 into a decimal, follow these steps: Thus, the mixed number 4 7/8 in decimal form is 4.875. Explanation: The process is essentially about separating the whole number and the fractional part. By converting the fraction

If an automobile’s gas mileage is 22 km/L, what is this quantity in miles per gallon? 1 m = 0.000621371 mi 1 L = 0.264172 gal 1 km = 1000 m – Report the answer using the correct number of significant figures – Do not include units The Correct Answer and Explanation is: To convert

Select all of the following that are strong bases: NaOH Ca(OH)2 AgOH Pb(OH)2 Mn(OH)2 The strong bases among the options listed are: Explanation: Strong bases are substances that dissociate completely in water, releasing hydroxide ions (OH⁻) to form a highly basic solution. The ability of a base to dissociate completely into its ions determines whether

Which of these strategies has been used successfully to protest slavery, secure rights for women, reject war, oppose racial segregation, and accomplish other great social change in principled and pragmatic ways? a. all of the above b. nonviolence c. none of the above d. aggressiveness e. neutrality The Correct Answer and Explanation is: The correct

When 560,000 is written in scientific notation, what is the power of 10 The Correct Answer and Explanation is: To express 560,000 in scientific notation, we need to follow these steps: Step 1: Understanding Scientific Notation Scientific notation is a way to express large or small numbers in the form of:a×10na \times 10^na×10n where: Step

How do you convert 87.5% as a fraction and a decimal The Correct Answer and Explanation is: To convert 87.5% into a fraction and a decimal, follow these steps: 1. Converting 87.5% to a Decimal: To convert a percentage to a decimal, divide the percentage by 100. In this case: 87.5% ÷ 100 = 0.875