A teacher has four liquids, with the densities shown in the table. She carefully pours the water, corn syrup, rubbing alcohol, and vegetable oil
into a beaker. The liquids form 4 layers in the beaker, as shown below.
E RE...
Liquid
Density
(g/cm)
Layer 1-
Water
1.00
Layer 2
Corn Syrup
1.33
Layer 3
Rubbing Alcohol 0.79
Vegetable Oil 0.92
Which liquid will be in Layer 3? (6.6B, 6.4A)
Layer 4
A. Water
B. Corn Syrup
C. Rubbing Alcohol
D. Vegetable Oil

electron microscopy and scanning tunneling microscopes gives us a greater understanding of atoms by being able to see the atom itself, and lets us see some atomic reactions.

explanation:

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms