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Chemistry, 22.06.2019 06:00
An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have
Answers: 2
Chemistry, 22.06.2019 09:00
Achemist 16 drop copper metal from copper chloride solution. the chemist place is 0.50 g of aluminum foil in a solution containing 0.75 g of copper (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction?
Answers: 1
Chemistry, 22.06.2019 12:00
Which of the following units is not an official si unit? mole liter kilogram ampere
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Chemistry, 23.06.2019 03:00
In which of the following phases of matter do molecules have the highest amount of energy? a. liquid b. gel c. solid d. gas
Answers: 2
Based on the solubility rules, which one of the following compounds should be insoluble in water? Mg...
Mathematics, 23.10.2019 18:00
Mathematics, 23.10.2019 18:00
History, 23.10.2019 18:00
History, 23.10.2019 18:00
Mathematics, 23.10.2019 18:00
Mathematics, 23.10.2019 18:00
History, 23.10.2019 18:00
History, 23.10.2019 18:00
Mathematics, 23.10.2019 18:00