How many molecules are present in a sample of oxygen gas with a mass of 3.2 grams

Sulfurous acid, H2SO3, breaks down into water (H20) and sulfur dioxide (SO2). If only one molecule of sulfurous acid was involved in a chemical reaction, how many sulfur (S) atoms would be in the products?

A model is any representation of an object or

What do scientists do to receive suggestions and criticism of their research from other scientists

When a substance goes directly from solid state to a gaseous state as dry ice does?

Define element and compound. explain the difference between an element and a compound.

An average microwave uses a frequency of 2.54 GHz. How much energy is emitted?

Why scientist form a hypothesis

Step two of the procedure states: "Using sterile technique, place a loopful of inoculum from the M. luteus culture in the drop of nigrosin and mix." Which of the procedures qualifies as sterile technique?

If 4.34 moles of potassium react with excess water, how many moles of hydrogen gas would be produced at STP

What is the common name of sodium bicarbonate