How do toothpaste prevent tooth decay?

How much heat is produced by the complete combustion of 284 g of CH4? CH4+2O2=CO2+2H2O; H=-802.3kj

Why is molybdenum a good conductor of electricity

If Kc = 0.450 at 40.°C and Kc = 0.635 at 90.°C, what is ΔH° for the reaction?

Match the following rocks with the correct type obsidian intrusive igneous granite organic sedimentary conglomerate clastic sedimentary evaporite extrusive igneous coal metamorphic marble

Question:For this question use the main assumptions of the Kinetic Molecular Theory of gases: 1. Gases are made up of molecules which are relatively far apart. 2. The molecules are in motion at high speeds. 3.

Explain what a alloy is and how the atomic structure of the alloy can make it stronger

Liz is examing a plant cell under a Microscope she seems many small green oranganelles inside the cell

Four different methods are described for validating the results of a particular analysis. Indicate for each whether the method primarily checks the accuracy of the analysis or the precision of the analysis. a.

How does the molar entropy of a substance change with increasing temperature

Compare the discoveries of Henri Becquerel with the discoveries of Marie Curie