Chemistry, 14.11.2019 00:31 sosick90501
Which is a characteristic of mixtures? they are chemically bonded together. they can be classified as pure substances. they have fixed ratios between their components. they can be separated by physical processes.
Answers: 1
Chemistry, 21.06.2019 15:00
1) how many electrons are in each energy level of the following elements? a. he b. na c. na d. ne 2) how many valence electrons are percent in the following atoms? a. s b. mg c. be d. cl 3) which of the following elements are stable as atoms? a. he b. o c. cl d. ar if you are able to provide the work as to how you got the answers that would be greatly appreciated. : )
Answers: 1
Chemistry, 21.06.2019 18:30
Asample of the male sex hormone testosterone, c19h28o2, contains 3.88×10^21 atoms of hydrogen.(a) how many atoms of carbon does it contain? (b) how many molecules of testosterone does it contain? (c) how many moles of testosterone does it contain? (d) what is the mass of this sample in grams?
Answers: 1
Chemistry, 22.06.2019 00:30
Used the balanced equation 2h2+ o2 - -> 2h2o. if you have 7.2 grams of o2 , how many grams of h2o can you produce ?
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
Which is a characteristic of mixtures? they are chemically bonded together. they can be classified...
Mathematics, 20.09.2019 18:00
Health, 20.09.2019 18:00
Mathematics, 20.09.2019 18:00
Social Studies, 20.09.2019 18:00
Mathematics, 20.09.2019 18:00
Social Studies, 20.09.2019 18:00
Mathematics, 20.09.2019 18:00
Mathematics, 20.09.2019 18:00
History, 20.09.2019 18:00