Which statement about one atom of an element identifies the element? (1) the atom has 1 proton.
(2) the atom has 2 neutrons.(3) the sum of the number of protons and neutrons in the atom is 3.(4) the difference between the number of neutrons and protons in the atom is 1.
Answers: 3
Chemistry, 22.06.2019 18:30
Asample of hydrated tin (ii) chloride (sncl2) has a mass of 4.90 g. when it is dehydrated, it has a mass of 4.10 g. which is the correct chemical formula for the hydrate? sncl2•2h2o sncl2•4h2o sncl2•6h2o
Answers: 2
Chemistry, 23.06.2019 08:40
A20 liter cylinder of helium at a pressure of 150 atm and a temperature of 27°c is used to fill a balloon at 1.00 atm and 37°c. what is the volume of the balloon? a. 0.14 liters b. 3000 liters c. 2900 liters d. 2400 liters e. 3100 liters
Answers: 1
Chemistry, 23.06.2019 09:50
When scientists are ready to publish the results of their experimentation, why is it important for them to include a description of the procedures they used?
Answers: 1
Which statement about one atom of an element identifies the element? (1) the atom has 1 proton.
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