How many formula units are present in 40.0 grams of Cu2S?

When the pressure that a gas exerts

What is impossible to do with a hypothesis

Asa choose the correct set of reaction coefficients to properly balance the following chemical equation according to the law of conservation of mass: __s8 + __o2 ==> __so2 1, 1, 8 1, 8, 1 1, 8, 8 8, 1, 1