If 20 grams of calcium combines completely with 16 grams of sulfur to form a compound, what

is the percent composition of calcium in the compound?

55.56% of Ca

Explanation:

Percent composition is a therm in chemistry defined as the ratio by mass between an element and the compound formed from this element.

In the problem, 20g of Ca are combined with 16g of S to form a compound. The mass of the compound is:

20g + 16g = 36g

Thus, percent composition of calcium is:

20g Ca / 36g × 100 = 55.56% of Ca

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.