What is the dark, organic-rich material formed as a top layer in soil from the decayed remains of plants and animals

How many atoms are in 5.5 moles

Name the element of standard mass.

I have a compound that turns litmus red, and very slowly causes effervescence in bicarbonate, but only with vigorous mixing. I performed the ester test and it looked okay, but all I smell is a little of the alcohol I used.

How are the terms molar mass and atomic mass different from one another

Why does carbon form so many organic compounds?

The table below shows four samples of carbon dioxide and the temperature of the water that they were dissolved in. sampletemperature of water (°c) 178273355463which of the samples most likely had the lowest solubility?

Using the periodic table, which of the following can be predicted for an atom of chlorine? It has 35.45 protons It has 17 protons It has 35.45 neutrons It has 17 neutrons

Which of these represents a chemical change?

A chemist measures the amount of iodine solid produced during an experiment. she finds that 1.6 g of iodine solid is produced. calculate the number of moles of iodine solid produced.

Write the equilibrium constant: Pb3 (PO4) 2 (s) = 3Pb2 + (aq) + 2PO2 (aq)