Toolkit

How many energy levels does sulfur have?

A. 2

B. 3

C. 4

D. 14

Draw a Lewis dot structure of the bonds between atoms in a molecule of this product. Use a - (dash) to represent a bonding pair. h20

Adding heat to a liquid which of the following. Physical changes

Objects in free-fall ___. (A) Do not experience air resistance (B) Do not experience gravity (C) Are accelerating faster than 9.8 m/s/s (D) Are completely weightless

Jamal lives in a place where it is hot in the summer and cold in winter. His family decided to improve the insulation in their house. Infer what happened to the cost of heating and cooling their house. Explain why?

How hot Will a 2.3L balloon have to get to expand to a volume of 250L?

A certain radioactive element has a half-life of one hour. if you start with 1.0 gram of the element at noon, how much of the radioactive element will be left at 2 p. m.? 0.50 grams 0.25 grams 0.125 grams 0.0 grams

Name two bases which react with dillute sulfuric acid to give zinc sulfate

What is the correct name for the compound nh4clo4?

What is the molality of a solution when 1.2 moles MgCl2 is stirred in 1000 grams of water?

How many elements are in one molecule of Methane? How many elements are in one molecule of Ammonia? How many elements are in one molecule of Vinyl Alcohol? How many elements are in one molecule of Ethylene?