What is the mass of 4 moles of helium, He?

The average kinetic energy of the particles in a gas A. is not affected by the temperature of the substance. B. increases as the temperature of the substance decreases. C. is proportional to the temperature of the substance. D.

Sinkholes and disappearing streams are found in areas with (blank)

A 100.0 mL bubble of hot gases at 225 °C and 1.80 atm escapes from an active volcano, what is the new volume of the bubble outside the volcano where the temperature is - 25 °C and the pressure is 0.80 atm?

How could the movement of sediments cause a problem if someone builds on Delta Marsh, Green Hill and Seaside Cliff? Answer for Delta Marsh, Green Hill and Seaside Cliff.

After driving in stop-and-go traffic in his new hybrid, Jesse notices that his car battery's power level has increased. What could be a possible explanation? A. When Jesse used his cruise control, energy was saved in the battery. B.

Henry Moseley organized the periodic table by A. atomic weight. B. atomic number. C. electronegativity. D. overall charge of atoms.

What happens when elements chemically combine? A.) All elements retain their original properties B.) New properties are former C.) Only metals retain their original properties D.) New elements are formed

Which element consists of positive ions immersed in a "sea" of mobile electronsa) sulfur b. nitrogen c. calcium d. chlorine?

1.87e3 m + 24 m + 5.43e-1 km + 1.561e2 km = km

Which 2 continents have the most obvious fit of the coastlines. subject science