Blog

Determine the name for aqueous HF

When sample A of methane, CH4, decomposes, it produces 35.0g grams of C and 2.04g of H. When sample B of methane decomposes, it produces 23.0g of C. What mass of H is produced by sample B?

Determine the formula for sulfuric acid.

A mass of mercury occupies 850. mL What volume would an equal mass of ethanol occupy? The density of mercury is 13.546 g/mL and the density of ethanol is 0.789 g/mL

Give the mass percent of nitrogen in C14H19NO2

Rb2S is named

Which substance below could be identified as an ionic compound?

A student performs an experiment to determine the density of a sugar solution.  She obtains the following results: 1.71 g/mL, 1.73 g/mL, 1.67 g/mL, 1.68 g/mL.  How would she report the average density and mid-range for her experiment?

How many significant figures are there in the answer for the following calculation:

What does X refer to in the following symbol? (_92^235)X