What did early scientists assume that the polar caps had in common?

From what materials are fossil fuels made?

What is the empirical formula for a compound that is 7.70% carbon and 92.3% chlorine

A red kangaroo travels 100 km in 5 hours. what is the kangaroo average speed a 10 km/h b 20 km/h c 25 km/h d 50 km/h

There are two open cans of soda on the table. One can was just taken from the refrigerator and the other was taken from the cupboard. Upon opening the cans, which one loses carbon dioxide more quickly and why? A. The can from the refrigerator.

How many grams of magnesium would contain the same number of atoms as 26.982 grams of aluminum?

Which element has an ion that is smaller than an ion of calcium?

Which factor is responsible for the weak attraction between diatomic molecules of the halogens (group 7A) ? A) Hydrogen bonding B) Ionic bonding C) Dipole interactions D) London dispersion forces

Which is the correct equation for refractive index?

Alcl3) and lithium sulfate (li2so4) (note - this is a double replacement reaction. you need this information to predict the products of the reaction)

Which type of bond is present in hydrogen sulfide (H2S) ? The table of electronegativities is given.