Elements are classified by their?

The atomic number of sulfur is 16. Sulfur combines with hydrogen by covalent bonding to form a compound, hydrogen sulfide. Based on the number of valence electrons in a sulfur atom, predict the molecular formula of the compound.

Why does poop turn blue after you bleach it

As rain falls onto land, what can happen too it?

Consider the following reaction under basic conditions: NO-2 (aq) + Al (s) ⟶NH3 (g) + AlO-2 (aq) How many hydroxide ions will appear in the balanced equation? Enter your answer as a whole number without any decimal places.

According to the bottle, a serving size of Gatorade is 240 mL. The molar mass of Red Dye #40 is 496.43 g/mol.

Compressing a sample of hydrogen gas to one half its initial volume will have what effect on its pressure?

The reaction of C4H8 and Br2 to yield C4H2Br2 represents

Which of these is the strongest acid? acetic acid chlorous acid nitrous acid propionic acid

Ethyl alcohol has a heat of vaporization of 850. J/g. What mass of ethyl alcohol can be boiled using 15000 J of energy?

How many significant figures are in the measurement 40,500 mg? a) two b) three c) four d) five