The atomic and mass numbers for four different atoms are given below. Which two are isotopes?

Atom Atomic# Mass#

W 50 117

X 50 119

Y 51 119

Z 52 117

A mixture of 4.0g H2 (g) and He (g) in a 4.3L flask is maintained at 0°C. Determine the total pressure in the container?

Which combination of factors is most suitable for increasing the electrical conductivity of metals

What is co2 the element

Do modules in air move more than modules in wood

What is the diffrence between earth fragments and rock fragments that are found in soils

How are mixtures and solutions the alike

Consider the statement, In the following process, the number of particles increases, so ΔS for this process must be positive. MgS (s) ⇄ Mg2 + (aq) + S2 - (aq) Is this statement true?

Identify the oxidized substance, the reduced substance, the oxidizing agent, and the reducing agent in the redox reaction. Cu (s) + 2 AgNO 3 (aq) ⟶ 2 Ag (s) + Cu (NO 3) 2 (aq)

A very flammable substance would not be used in children's clothing.

Determine the number of electrons, neutrons and protons in an atom of arsenic - 75.