A compound of molar mass 177 g/mol contains only carbon, hydrogen, bromine, and oxygen. Analysis reveals that the compound contains eight times as much carbon as hydrogen by mass. Find the molecular formula.

Researchers obtained the following data from experiments to find the molecular formula of benzocaine, a local anesthetic, which contains only carbon, hydrogen, nitrogen, and oxygen. Complete combustion of a 3.54-g sample of benzocaine with excess O₂ forms 8.49 g of CO₂ and 2.14 g H₂O. Another 2.35-g sample contains 0.199 g of N. The molar mass of benzocaine is 165 g/mol. Find the molar formula of benzocaine.

Find the total number of atoms in a sample of cocaine hydrochloride, C₁₇H₂₂ClNO₄, of mass 23.5 mg.

Vanadium forms four different oxides in which the percent by mass of vanadium is, respectively, (a) 76%, (b) 68%, (c) 61%, and (d) 56%. Determine the formula and the name of each oxide.

The chloride of an unknown metal is believed to have the formula MCl₃. A 2.395-g sample of the compound contains 3.606×10^-2 mol Cl. Find the atomic mass of M.

Write the structural formulas of three different compounds that each have the molecular formula C₅H₁₂.

A phosphorus compound that contains 34.00% phosphorus by mass has the formula X₃P₂. Identify the element X.

A particular brand of beef jerky contains 0.0552% sodium nitrite by mass and is sold in an 8.00-oz bag. What mass of sodium does the sodium nitrite contribute to the sodium content of the bag of beef jerky?

Phosphorus is obtained primarily from ores containing calcium phosphate. If a particular ore contains 57.8% calcium phosphate, what minimum mass of the ore must be processed to obtain 1.00 kg of phosphorus?

Element A is an atomic element, and element B is a diatomic molecular element. Using circles to represent atoms of A and squares to represent atoms of B, draw molecular-level views of each element.