1. How many particles are in a mole? 2. What is the name for the mole number?
3. How many particles are in 1 mol of carbon (C)? 1 mol of lithium (Li)? 1 mol of eggs? Will 1 mol of
each of these substances have the same mass?
Round each answer to 2 decimals.
4. How many particles are in 1.9 moles of iron (Fe)?
5. How many moles are in a sample containing 2.3 x 1024 atoms of xenon (Xe)?
6. What is the mass of 5 moles of potassium (K)?
7. What is the mass, in grams, of 7.4 moles of silicon (Si)?
8. How many atoms are in 80.45 g of magnesium?
9. What is the mass in grams of 1000 atoms of the carbon-12 isotope?
10. Which contains more atoms, 2.2 moles or 45.98 g of sodium (Na)?

Plz me ! 1 which of earths spheres contains most of its mass? a atmosphere b hydrosphere c geosphere* d biosphere 2 erosion and weathering are examples of which types of forces? a constructive forces b destructive forces* c gravitational forces d inertia-related forces 3 which of the following statements about earths atmosphere is true? a earths atmosphere contains 78% water vapor which is essentail to life b earths atmosphere contains 21% oxygen c earths atmosphere contains carbon dioxide which all life forms require d earths atmosphere allows radiation from the sun to pass through it and warm earths surface* 4 the strenght of the force of gravity between two objects is determined by which of the following factors? select all that apply a the messes of the objects* b the distance between the objects* c the volumes of the objects d the surface area of the objects 5 earth and moon are kept in there respective orbits due to the influence of a inertia b gravity c gravity and inertia* d neither gravity or inertia if you answer all questions right i will give