When a 10 ml graduated cylinder is filled to the 10 ml mark, the mass of the water was measured to be 10.055 g at 20ºc. if the density of water is taken to be 0.9975 g/ml at 20ºc, what is the percent error for the 10 ml of water.

1. baking powder is a 1: 1 molar mixture of cream of tartar (khc4h4o6) and baking soda (nahco3). a recipe calls for two teaspoons (a total of 8.0 grams) of cream of tartar. how much baking soda must be added for both materials to react completely?

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.

The element that has the greatest electronegativity is