Sand dunes are created when the wind carrying the sand runs into an obstacle a. true b. false

When curium-242 is bombarded with an alpha particle, two products are formed, one of which is a nudge on. what is the other product

If 34.2 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 299 kelvin and 1.21 atmospheres? 2 li (s) + 2 h2o (l) yields 2 lioh (aq) + h2 (g)

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?