Balance the equation:

CaC2 + O2 → Ca + CO2

An industry is required to clean up 4.0 t of a by-product containing both toxic and inert material. The toxic content is 15%; the rest is inert. The by-product is treated with 55 t of solvent resulting in an amount of dirty solvent containing 0.

A strong oxidizing agent will donate electrons readily.

Generally speaking, elements with high electronegativities are 1. nonmetals. 2. likely to form anions (except the noble gases). 3. All of these 4. easily reduced (except the noble gases).

Determine the molecular formula of a compound that is 49.48% carbon, 5.19% hydrogen, 28.85% nitrogen, and 16.48% oxygen. the molecular weight is 194.19 g/mol.

The barometer shown in fig. p1.35 contains mercury (5 13.59 g/cm3). if the local atmospheric pressure is 100 kpa and g 5 9.81 m/s2, determine the height of the mercury column, l, in mmhg and inhg.

Which element above has 8 protons in its nucleus? a. oxygen b. carbon c. phosphorus d. sulfur

If the copper is drawn into wire whose diameter is 9.50 mm, how many feet of copper can be obtained from the ingot? The density of copper is 8.94 g/cm3.

Angle of incidence equals angle of this A. Reflection B. Refraction C. Diffraction

When conducting an experiment, a scientist should: (a) attempt to test every possibility (b) attempt to control the conditions (c) place no limits on the investigation (c) proceed without specific goals

Can atoms be divided into smaller pieces