Temporary hardness of water is

caused by the pressure of

A. CaSo4

B. Ca (HCo3)

C. CaCL2

D. CaCo3

Annabeth has 7.2 cups of cookie batter, represented by this model. If each cookie uses 0.45 cup of batter, how many cookies can annabeth make?

02:59:56 A 60.0-g sample of fermium-253 was placed in a sealed vessel 9.0 days ago. Only 7.5 g of this isotope is now left. What is the half-life of fermium 253? 3.0 days 4.5 days 17.5 days 20.0 days

Select the correct answer. Charlie throws a ball up into the air. While the ball is airborne, which is the greatest force acting on the ball to slow it down? A. applied force B. friction force C. gravitational force D. normal force

What is the fórmula of sodium pentasulfide

What to do if carbon monoxide alarm is going off

Which of the following correctly identifies steps used in the fractional distillation of petroleum? The mixture is cooled, condenses, then heated and boils. The mixture is cooled, boils, then heated and condense.

What is the formula of the most stable oxide of francium?

You just calculated that the heat of fusion for chloromethane is 6400 J/mol. The heat of fusion for hydrogen is 120 J/mol. Which of the following account for this difference? a. Hydrogen has stronger intermolecular forces than chloromethane. b.

Magnesium burns with a very bright light. When the flame goes out, a White powder is left behind. what is the word equation for this reaction.

Identify the types of intermolecular forces found for each of the liquids and relate these to the shape of the drop as seen from the side. Include the terms cohesive and adhesive forces properly in your explanations.