How many grams of phosphine (PH3) gas can form when an excess of solid phosphorus (P4) reacts in a sealed chamber with 38.9 liters of hydrogen (H2) gas at
STP? (3 sigfigs)

What is the morality of 2.50 l of solution that contains 1.85 mol of anhydrous sodium tetraborate?

In a 28 g serving of cheese curls there are 247mg of sodium. how much sodium is in a 12.5 ounce bag

What makes up a film badge? layers of photographic film covered in black paper. an electrolyte paste spread across a plastic sheet. a thin film of salts and other chemicals on clear acetate. a panel of photographic film exposed to the air. ✓