Chemistry, 31.08.2019 17:30 alix1234567888
The first 18 elements in the periodic table have which of the following important properties? a. they have the largest atomic numbers c. most occur as liquids at room temperature b. they do not typically combine with other elements to form compounds d. these elements make up most of the matter of the known universe select the best answer from the choices provided a b c d
Answers: 2
Chemistry, 22.06.2019 18:00
The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.
Answers: 1
Chemistry, 22.06.2019 20:10
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 Ă 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) + clâ(g) ĂŚ agcl(s)
Answers: 3
The first 18 elements in the periodic table have which of the following important properties? a. th...
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