Heather just drank 40.0 grams of water (H20). How many moles of water did she just drink? O a. 2.22 moles b. 45 moles O c. 40.0 moles O d. 0.45 moles O e. 720 moles

Many protists are single-celled organisms. Which other characteristic is common to organisms in Kingdom Protista? They thrive in wet environments. They thrive in environments with little sunlight. They thrive in environments without water.

use the particle theory to explain why hot chocolate powder dissolves more rapidly in hot water than cold water

Chlorine gas reacts with fluorine gas to form chlorine trifluoride. cl2 (g) + 3f2 (g) →2clf3 (g) a 2.15 l reaction vessel, initially at 298 k, contains chlorine gas at a partial pressure of 337 mmhg and fluorine gas at a partial pressure of 746 mmhg.

Calculate the molarity of a solution made with 15.7 g of NaCl in 100 ML solution

When ice melts what happens to the water molecules

2. How many grams of sucrose would be needed to prepare 100. mL of a solution of 0.10 M sucrose? Show your calculations.

You have two separate containers each filled with a gas. The containers have the same volume and are at the same temperature. The gases also exert the same pressure. Which of the following statements are true? a.

Here is an important message is chemistry code. scandium, iodine, europium, nitrogen, cerium, iodine, sulfur, gallium, ruthenium, oxygen, oxygen, vanadium, yttrium. What is the message

Which process are driven primarily by Earth's internal heat (thermal) energy

A radioisotope used for diagnosis must emit gamma rays of sufficient energy to escape from the body and it must have a half-life short enough for it to decay away soon after imaging is completed. TRUE FALSE