Are elements, compounds, or both made up of small invisible particles?

Which of the following is NOT a symbol for an element? H Li Pb HF

What happens when acids react with compounds made of carbonates?

Which of the following pairs is an example of the diagonal rule? H, He Fe, Rh I, Po Li, Mg

Choose all that apply. According to the theory of matter proposed by John Dalton: all matter is made up of atoms all atoms of the same element have the same mass all atoms of the same element have the same size combinations of atoms create chemical

A voltaic cell spontaneously converts chemical energy to (1) electrical energy (3) mechanical energy (2) geothermal energy (4) nuclear energy

Identify water. weak electrolyte, weak acid nonelectrolyte strong electrolyte, strong acid weak electrolyte, strong acid strong electrolyte, weak acid

What is the atomic weight of a hypothetical element consisting of two isotopes, one with a mass of 62.2 u which is 24% abundant, and the other with a mass of 64.0 u?

A pure compound contains 24 g C, 4 g H, and 32 g O. If no other elements are present, determine the empirical formula of the compound. Be sure to show your work.

One method for preparing pure iron from Fe2O3 is by reaction with carbon monoxide. Fe2O3 (s) + CO (g) →Fe (s) + CO2 (g) How many moles of carbon monoxide are needed to react completely with 122 kg of Fe2O3.

A microspectrophotometer measures which of the following? Electrons Electricity Light absorption Pigments