A neutral atom has two electrons with n = 1, eight electrons with n = 2, eight electrons with n = 3, and one electron with n = 4. It has no other electrons. What is the atomic number of this element?

A 3.2 liter sample of a gas is at 40 oC and 1.0 atmosphere of pressure. If the temperature decreases to 20 oC and the pressure decreases to 0.60 atmospheres, what is the new volume of the gas in liters?

What is the relationship between the salinity and density of ocean water?

Compare and contrast renewable and nonrenewable resources give at least two advantages and two disadvantages of each

Describe the exchange of carbon through carbon-containing compounds between an organism and the environment.

7) Sodium is much more apt to exist as a cation than chlorine because: a) chlorine is a gas and sodium is a solid b) chlorine has a greater electron affinity than sodium c) chlorine is bigger than sodium d) chlorine has a greater ionization energy

Which of the following substances is formed deep under Earth? Chlorophyll Glucose Oil Oxygen 30 pts if someone answer right

a reagent bottle (labelled) is filled with HCL solution and the other (labelled as b) is filled with water. both liquids in the bottle are colourless. what method do you recommend to identify the acid and water?

Which of the following is NOT a chemical reaction? a. ice melts from water b. ammonia breaks up into nitrogen and hydrogen c. hydrogen and oxygen combine to make water

Which type of atom is expected in the products of this chemical reaction? C6H12O6 + 6O2? A. boron (B) B. lithium (Li) C. oxygen (O) D. helium (He)

How many moles of caco3 are there in an antacid tablet containing 0.515 g caco3?