How many moles are present in 4.7 liters of argon gas as STP

What type of chemical bond is hydrogen?

What is the most important role that water plays for living organisms A. all organisms need water to stay clean B. all organisms need water to transport water into their cells C. all organisms need water as an energy source D.

The molecules in object A possess a higher average kinetic energy than those in object B. Thus: Heat could transfer from object B to object A. Heat could transfer from object A to object B.

Which of the following is the best example of erosion? A. Sediment piling up at the mouth of a river B. Plant roots growing through concrete and splitting it C. Waves carrying sand away from a beach D.

Express the following concentration of solution in terms of molarity: 3.00 L of solution contains 1.75 mol of solute. A. 5.25 B. 0.583 C. 1.71 D. Too little information to know

Drinking water may contain a low concentration of lead ion (Pb2) due to corrosion of old lead pipes. The EPA has determined that the maximum safe level of lead ion in water is 15 ppb.

A student examines the temperature and precipitation on a given day using a thermometer and a rain gauge. The student is measuring- A. temperature only B. climate only C. wind speed only D. specific weather conditions

Atoms - 1 2 3 4 Protons - 8 10 9 8 Neutrons - 10 9 9 11 Electrons - 8 10 9 8 Which two are isotopes of one another?

A radioactive isotope has the same number of protons as its stable parent atom, but differs in its number of what?

A student experimentally obtained the density of osmium the densest element as 22.57g/cm3 the density of osmium is reported to be 22.48 g/cm3 determine the student percent error