How many valence electrons does a helium atom have? consult the periodic table.

2. Which minerals contain the two most abundant elements by mass in Earths a. Fluorite and calcite b. magnetite and pyrite c. amphibole and quartz d. galena and sulfur

How can a large body of water, such as an ocean, influence climate? A: rushing water from tides cools the land B: there is no influence on climate from an ocean C: ocean winds can carry moisture with them and can bring rain and fog over inland areas

How will you recover the water from the salt water? Explain How will you separate sand from water? Explain

If a certain ocean wave has a frequency of. 09 hertz, and a wavelength of 10 meters, what is the speed?

Why is water an effective solvent for many different types of compounds?

If the average American throws away 4.5 lb of trash each day, and the population of the US is estimated to be 311 million people, calculated the number of metric tons of garbage thrown away in the US each year.

Difference between radical and compound

Water is a produced when 30.0 grams of hydrogen reacts with 80.0 grams of oxygen what is the limiting reagent

How are reactions and products related in a chemical reaction?

Ollie wants to sign up with an online social network called TeensMeet, which other kids at school have joined.