Which atom is larger Na or K? explain why.

Do you think thar solids can undergo convection? Explain.

What are the similarities of physical and chemical change?

1. Replace? with a whole number to make the statements true. a. 20 : 4? means? * 4 = 20 b. 2,725 : 5? means? * 5 = 2,725 c.? : 5 = 0 2. ABC Preschool spent $1,475 on diapers this year. If the diapers cost $25 per box, how many boxes did they use? 3.

What is always true of a weak acid

How many moles of boron are in 37.8 grams of boron?

Suppose you find a rock that contains some potassium-40 (half-life of 1.3 billion years). you measure the amount and determine that there are 5 grams of potassium-40 in the rock.

What are some positive and negative effects of the production of maple syrup on society and the environment?

Describe and give an example of parasitism.

Why is a dilute solution of oleic acid used instead of pure oleic acid?

The vapor pressure of benzene (C6H6) is 73.0 mm Hg at 25 °C. What is the vapor pressure of a solution consisting of 179 g of benzene and 0.217 mol of a nonvolatile nonelectrolyte?