(i need this answered quickly! i'm taking a quiz! )

a beaker is best used for measuring

a. the precise mass of a solid
b. the precise volume of a liquid
c. the approximate mass of a solid
d. the approximate volume of a liquid

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.

If you burn 46.6 g of hydrogen and produce 416 g of water, how much oxygen reacted

What is a number added in front of a formula in order to balance the equation