A 35 L tank of oxygen is at 315 K with an internal pressure of 190 atmospheres. How many moles of gas does the tank contain?

An element has atomic number 10 and an atomic mass of 20. How many neutrons are in the atom of this element?

The surface of the earth is divided into more than 50 large plates

What are crystalline solids? A. Solids with heterogeneous organization B. Solids with a repeating atomic pattern O C. Solids with a random atomic structure D. Solids that break apart in jagged pieces

One twelfth the mass of a carbon-12 atom is used to define a (an) a. atomic mass. b. mass number. c. atomic number. d. atomic mass unit.

Inside a volcano how do the slanted layers of hardened lava get there

Which of the following has the greatest first ionization engergy li, be, b or c

If we know that 10.0 cm3 of ice has a mass of 9.19 g what is the density of ice

1. The is the particle in the nucleus of the atom that carries a positive charge and is counted to identify the atomic number. What's the answer

How many grams are there in 5.00 moles of lead Pb?

A large body in space that orbits a star and does not produce light of its own