Use the reaction, 2 PH3 + 4 O2 P2O5 + 3 H2O, to answer the following questions. How many grams of P2O5 will be produced when 17.0 g of PH3 is mixed with 16.0 g of O2 and reaction occurs?
Which of the reactants is limiting? Which is in excess?

What is the mass of 0.46 mil of mgcl2

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?