Which of these is an example of a literal equation? A. ax - by = k
B. 12 = 9 + 3x
C. 3x - 4y
O D. 6 + 30 = 62
SUBM

6 + 30 = 62 is literal equation.

B

Explanation:

well if you calculate it,

12 - 9 = 3x

3 = 3x

x = 1

you can find the answer for x but in the other choices you have no inputs for the values therefore all of them are wrong, and D is just wrong because 6 + 30 doesnt equal 62

- 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

there are two significant figures.