Which of the following elements is least likely to form a cation that will then form an ionic bond with an ion of a Group 7A element?

A. K

B. Rb

C. Fr

D. I

How much heat is needed to raise the temperature of 7g of water by 18oC?

1. A sample of gold (Au) has a mass of 35.12 g. a. Calculate the number of moles of gold (Au) in the sample and record in Table 1. Show your work. b. Calculate the number of atoms of gold (Au) in the sample and record in Table 1. Show your work. 2.

Which is an inorganic compound? A.) Sample C contains carbon, hydrogen, and nitrogen. B.) Sample B contains carbon, hydrogen, and bromine. C.) Sample A contains aluminum, hydrogen, and oxygen

A food web is a graph showing how each organism is able to eat another organism. a list of the strongest predators. a graphic representation of all possible energy pathways through an ecosystem.

Butyric acid is a compound that smells like "baby spit-up, but it can be reacted with ethyl alcohol to make artificial pineapple fragrance (ethyl butyrate). Butyric acid's percent composition is 54.53% carbon, 9.15% hydrogen, and 36.32% oxygen.

A sample of helium, at 20 °c, occupies a volume of 3.17 l at a pressure of 6.21 atm. what volume does this helium sample occupy if the pressure is reduced to 5.57 atm while maintaining the temperature at 20 °c?

List the different kinds of nitrogen bases

What is the purpose of the scientific method? A. To make a guess in order to prove a hypothesis B. To provide a reliable answer to a specific question C. To remove any source of bias in an experiment D.

Given the balanced equation: C₃H₈ + 5O₂ → 3CO₂ + 4H₂O, what is the total number of moles of O₂ required for the complete combustion of 1.5 moles of C₃H₈?

What are substances called whose solutions conduct electricity?