1. How many atoms are in 2.15 moles of water? *2. How many atoms of copper are in 12.0 grams?

*3. How many moles of NH3 contain 1.75 x 10^24 molecules of?

4. Determine the number of molecules in 16.75 g of H2O ?

5. Find the formula for a hydrate with 48.8% MgSO4 & 51.2% H2O

6. What is the % by mass of C in Pb(C2H3O2)2?

(Questions with stars just don't make sense to me.)

*will mark you brainliest + 15 points ** why does the equilibrium of a system shift when the pressure is increased? a. to maximize the stress on the system b. to stop restoring equilibrium to the system c. to increase the total moles of gas in the system d. to decrease the total moles of gas in the system

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy