The mass of a liquid is 11.50 g and its volume is 9.03 ml. how many significant figures should its desnsity value have

Density = mass/volume = 11.50 g/9.03 mL

We have four significant figures divided by three significant figures.

The answer can no more significant figures than are in the number with the fewest significant figures (3).

The density value should have three significant figures.

Density = 1.27 g/mL

- 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 is none because earth is stationary and flat.