Which two subatomic particles have opposite charges?
A. electron and neutron
B. neutron and p...
Chemistry, 07.12.2020 14:00 wpatskiteh7203
Which two subatomic particles have opposite charges?
A. electron and neutron
B. neutron and proton
C. proton and electron
Answers: 3
Chemistry, 22.06.2019 04:00
Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution?
Answers: 2
Chemistry, 22.06.2019 13:50
Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.
Answers: 3
Chemistry, 22.06.2019 23:30
With the largest atoms and the smallest number of valence electrons and with the smallest atoms and the greatest number of valence electrons are the most reactive. a. nonmetals; metals b. nonmetals; transition elements c. transition elements; metals d. metals; nonmetals
Answers: 3
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Reactions in cells take place at about a. 40°c b. 0° c. 100°c d. 60°c
Answers: 1
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