Chemistry, 08.12.2020 04:50 promiselee200
1. The energy required to remove one electron from an ion carrying a -1
charge is called...
Select one:
1. second electron affinity.
2. second ionization
energy.
3. first electron affinity.
4. first ionization energy
2. Sodium chloride is an ionic compound with the basic formula NaCI.
Which option describes the nature of sodium chloride?
1. It is crystal made from sodium and chloride atoms in 1:1 ratio
2. It is made up of molecules, each of which has one sodium and one chloride atom.
3. It is a crystal made from an inner core of sodium Atoms surrounding by chlorine atoms.
4. It is made up of individual sodium and chlorine atoms that are not connected to each other.
3. A sample of lithium sulfide has a twice as many lithium atoms as it had sulfur atoms.
If sulfur ions carry the charge of 2-, what is the charge of lithium ions?
Answers: 2
Chemistry, 23.06.2019 05:00, MoneyMike42
Select the statement that describe chemical properties a. antacid tablets neutralize stomach acid b. helium is the lightest monatomic element c. water freezes at 0 celsius d. mercury is liquid at room temperature
Answers: 3
Chemistry, 23.06.2019 11:00, randyg0531
Which of the following reactions is endothermic? h2(g) + ½ o2(g) h2o(g), h = -57.82 kcal ½n2(g) + o2(g) + 8.1 kcal no2(g) ½ n2(g) + 3/2 h2(g) nh3(g) + 11.0 kcal c(diamond) + o2(g) co2, h = -94.50 kcal
Answers: 2
1. The energy required to remove one electron from an ion carrying a -1
charge is called...
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