20 ! what are the missing coefficients needed to make this equation balanced from left to right?
a
1, 2, 3

b
1, 2, 2

c
2, 4, 3

d
2, 1, 2

Which common material is an example of a polymer? (25 pts) a. steel b. plastic c. petroleum d. rubbing alcohol

According to the tide table below what time of day will the highest tide occur? (2 pt) the highest tide will occur at

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)