How many grams of beryllium chloride(becl2)are needed to make 125ml of a 0.050 m solution

Predict the products butane (c4h10) + oxygen —>

A4.86 g piece of metal was placed in a graduated cylinder containing 15.5 ml of water. the water level rose to 17.3 ml. what is the density of the metal. i need the steps of how to solve it to so i can use a formula to work out other problems.

Astudent conducts an experiment to determine how the amount of water given to a plant affects its growth. what is the independent variable for this experiment?