An element's atomic number is 60. How many electrons would an atom of this element have?

A data table shows the heght of a person on his birthday each year ten years what is the independent varible

Which type of bond is formed between magnesium and oxygen? A. ionic B. metallic C. polar covalent D. nonpolar covalent

Which term describes magma that cools on the surface of the earth? A. feldspar B. limestone C. lava D. coquina

Lets say you were doing an experiment on two different chemicals in two different test tubes. One chemical is giving off oxygen gas or hydrogen gas the other is giving off carbon dioxide gas.

A concentrated solution has: a) more particles per litre than a dilute one b) bless particles per litre than a dilute one What is the answer? a or b?

Compare and contrast the outer core and the inner core.

What colors make the color turquoise?

12.23 g of ammonia (NH3) are dissolved in enough water to make 560.0 mL of solution. How many moles of NH3 are added to the water?

According to the ph scale, what is the approximate ph of acid rain? a. 4.0 b. 4.5 c. 5.0 d. 5.5

You find a little bit (0.150g) of a chemical marked Tri-Nitro-Toluene, and upon combusting it in oxygen, collect 0.204 g of CO2 and 0.030 g H2O (we'll assume that these are the products, along with nitrogen).