How many atoms of gold (Au) are present in a sample of 2.5 mol Au?

1.5 * 10^24 atoms Au

1.5 * 10^23 atoms Au

4.2 * 10^24 atoms Au

4.2 * 10^23 atoms Au

Which of these is an element? A) air B) Carbon dioxide (CO2) C) water (H20) D) carbon (c)

Assume you had a silver sphere with a mass of 1.50kg. calculate the diameter of the sphere (in cm). the density of silver is 10.5 g/cm^3. the formula for the volume of a sphere is ... v = 4/3 3.14 r^3

Which coefficients balance this equation? _H2 + _N2 - > _NH3 A. 1, 2, 3 B. 2, 3, 2 C. 3, 1, 2 D. 4, 1, 3

Which compound has the lowest vapor pressure at 50°C? (1) ethanoic acid (3) propanone (2) ethanol (4) water

What energy conversion is taking place when working of a hair dryer

What's nuclear decay

When is a hurricane nears land, causes the most damage?

What is the chemical formula for gallium chlorine?

What three processes cause fireworks to emit light?

How many copper atoms are in a pure copper statue with a mass of 132 kg