How many water molecules are created when 32 grams of oxygen react completely with 4.0 grams of hydrogen?
a. 2
b. 20
c. 6.02 × 1023
d. 1.2 × 1024

Calculate the molarity of 48.0 ml of 6.00 m h2so4 diluted to 0.250 l .

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.