A toy car is pushed 10 meters in 5 seconds. What is the speed of the toy car in meters per second? A. 5 meters per second
B. 10 meters per second
C. 2 meters per second
D. 0.5 meters per second

Determine the number o moles of ions/atoms/particle in the following: 2.50 miles of k2s (let me know how to do)

The lattice enthalpy (formation of ionic solid from ions in the gas phase) for agcl(s) is -916 kj/mol and the hydration enthalpy (dissolution of gaseous ions into water) is -850 kj/mol. how much heat (in joules) is involved in forming 1l of saturated agcl solution (1.8 × 10-4 g / 100 ml water) by dissolving agcl(s)? assume solution volume does not change much upon dissolution. the equations are given below. ag+(g) + cl−(g) æ agcl(s)

Isopropyl alcohol, (ch3)2choh, is a common solvent. determine the percent by mass of hydrogen in isopropyl alcohol. a) 6.71% h b) 13.4% h c) 25.0% h d) 53.3% h