Calculate the standard enthalpy of formation of ammonium carbonate in Kcal/mol?

An element initially weighed 3.555 g. When it was burned in oxygen an oxide compound was produced. The product mass was 4.666 g. A.) What is the mass of oxygen in the product? B.

You have 1.2 mol of sodium chloride. how many grams of this

Why are bacteria are able to evolve rapidly

What occurs only on the surface of the substance

What is the osmotic pressure of an intravenous solution prepared by dissolving 44.0 g of dextrose (sugar), C6H12O6, in enough water to make 1.00 L of solution? Dextrose is a nonelectrolyte and body temperature is 37.0 ∘C.

To prevent tank rupture during deep-space travel, an engineering team is studying the effect of temperature on gases confined to small volumes. What is the pressure of 4.00 molmol of gas DD measured at 251 ∘C∘C in a 1.

What is significant about the elements within the same group of the periodic table?

Darwin observed a variety of tortoises on the Galapagos Islands. These observations provided evidence for which of these statements?

Which statement correctly describes the actual yield and the theoretical yield of a reaction? A.) The actual yield is calculated from the reactant amounts, but the theoretical yield must be measured for each instance of a reaction. B.

How does heat get from the stove burner into your soup?