Reuse the same test tubes from part A, labeled Fe2+ and Fe3+. Be sure they’re clean. Add 4 milliliters of iron(II) sulfate to the test tube labeled Fe2+. Add 4 milliliters of iron(III) nitrate to the test tube labeled Fe3+. Add 4 milliliters of potassium iodide to each test tube. Add 1 milliliter of the prepared starch solution to each test tube. Record your observations, noting any evidence of a chemical reaction. If there is no evidence of a reaction, write “no reaction.”

- 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

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.

answer: i have one answer

acids are substances that ionize (break off) in an aqueous solution to produce hydrogen (h+) ions

explanation:

hope this and sorry i could only come up with one answer!