When do scientist rely on estimates

What is the mass in grams of 358 mL of ethylene glycol?

Do carbohydrates always contain phosphorus

500.0 mL of a gas is collected at 74,5 kpa. What will the volume be at 101,3 kpa?

Phosphine, PH₃, is a colorless, toxic gas that is used in the production of semiconductors as well as in the farming industry. When heated, phosphine decomposes into phosphorus and hydrogen gases.

Consider the reaction. Upper H subscript 2 upper o (g) plus upper C l subscript 2 upper O (g) double-headed arrow 2 upper H upper C l upper O (g). At equilibrium, the concentrations of the different species are as follows. [H2O] = 0.077 M [Cl2O] = 0.

The west side of California's coast has a marine climate, while the eastern side is a desert. What is responsible for the difference? A. Cool winds cannot blow across a large lake into the desert. B.

Why do plants found at a different elevation on a mountain might differ

If heat flows out of a system, the heat change (AH) will be , and the reaction will be

what mass of sucrose needs to be dissolved into 540 g of water in order to prepare a 15.0% by mass solution?

If I want to say HCl (g), do I need to say the gas form of hydrogen chloride or hydrochloric acid?