Gold has a molar mass of 197 g/mol. (a) how many moles of gold are in a 3.98 g sample of pure gold? (b) how many atoms are in the sample?

What is the shape of an ammonia molecule? A. bent B. tetrahedral c. trigonal pyramidal D. linear E. trigonal bipyramidal

What can make this balanced by adding coefficients CH4+O2 H2O + CO2

Pero como se llama la cansion

In filtration, the filtrate is always a pure liquid

A sample weighing 30.0 grams contains 1.5g of salt / determine the percent salt found in the sample

What is the mass of 1 mole of carbon dioxide CO2?

An experiment is performed using 7 liquids; Methanol, Ethanol, Propanol, Butanol, Water, Pentane and Acetone. a.) The order of rates of evaporation from fastest to slowest are shown: Pentane, Ethanol, Methanol, Acetone, Water, Propanol and Butanol.

What does a molecule look like

If a student calculated 0.02789 moles of copper (II) cations (Cu2 + ions) in the sample, how many moles of copper metal (Cu0) could be obtain from the sample at the end of the experiment?

99pts! Which of the following best explains what happens when the kinetic energy of particles in a gas state decreases? They vibrate so quickly that the particles ionize and become plasma.