What is the volume of 90.0 grams of ether if the density of ether is 0.70 g/ml?
a)1.1 x 10^2 ml
b)1.3 x 10^2 ml
c)6.3 x 10^1 ml
d)7.8 x 10^-3 ml

In a water molecule, hydrogen and oxygen are held together by a(an) bond. a) double covalent b) ionic c) nonpolar covalent d) hydrogen e) polar covalent

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent