Which number has four significant figures? 0.05730 meters 40.007 meter 0.00073 meter 8765 meter

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

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?

Find the mass, in grams, of 5.00*10^23 molecules of f2