How many moles are in 3.48 x 1024 particles of lithium ?

5.78 mol Li

Explanation:

Step 1: Define

Avagadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Step 2: Use Dimensional Analysis

= 5.78073 mol Li

Step 3: Simplify

We have 3 sig figs.

5.78073 mol Li ≈ 5.78 mol Li

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.