A scientist who observes and protects dolphins

Which of the following would have the largest atomic radius? A) Francium B) Sodium C) Nitrogen

Which pair of atoms has the highest electronegativity difference? Na-F Ca-F H-F C-F F-F

Which of the following involve chemical changes? 1. a carrot being digested 2. a piece of wood burning 3. a piece of chocolate melting

565,900 seconds into minutes. Convert

What is the mass of 222 ml of ice if the density of ice is 0.92 g/ml?

At 25 ∘c, kp = 25 for the reaction h2 (g) + i2 (g) ⇌2hi (g). at equilibrium, the partial pressure of both h2 and i2 is 0.296 atm. what is the partial pressure of hi at equilibrium?

A pool is being drained at a rate of 120 gallons per minute. what is the rate in liters per hour?

True or false: Chemical reactions can be detected by the formation of a gas.

List some common liquids that you think are acidic or basic. For example, do you think orange juice is acid or base? Why do you think each liquid is an acid or base?

Given the equation 4Al + 3O2 - -> 2Al2O3 if 325 grams of Al2O3 are to be formed, determine the mass of aluminum that must be reacted with excess oxygen. Question 4 options: 101.77g Al 26.9g Al 171.80g Al 6.38g Al