How Many atoms are in 1 mole of tantalum, Germanium, Rhodium, Nihonium?

Which of these salts is most likely to be soluble? Potassium nitrate OR Iron carbonate OR Copper oxide

Which is the chemical formula for zinc phosphate

A sample that weighs 107.75 g is a mixture of 30% helium atoms and 70% krypton atoms. How many particles are present in the sample?

In the mineral beryl what is the ratio of beryllium to aluminum to silicate.? 1. 1:1:1 2. 1:2:3 3. 1:36 4. 1:2:6

High zinc intakes can inhibit the absorption of copper true or false

Every water molecule has two hydrogen atoms bonded at one oxygen atom. This fact supports the concept that elements in a compound are

What is the mass of 9 atom (s) of copper in grams?

Andy has two samples of liquids. Sample A has pH of 4, and sample B has a pH of 6. what can Andy conclude about these two samples? Sample A is a neutral b alkali c acidic Sample B is a neutral b alkali c acidic

How does a lone pair contribute to molecular shape? A. It is too small to affect the molecule's shape. B. It takes up space like an "invisible" atom. C. It forces the molecule into a tetrahedral shape. D. It lets the bonding pairs spread out more.

The are of a rectangle is 12 in^2. what is the area in cm^2. there are 2.54cm in an inch.