Chemistry, 20.01.2021 01:00 TH3L0N3W0LF
A certain hydrocarbon CxHy, is burned (reacts with O2gas) and produces 1.955 grams of CO2 for every 1.000 gram of H2O. What is the empirical formula of this hydrocarbon? CxHy + O2 yield CO2 + H2O
Answers: 1
Chemistry, 22.06.2019 08:40
Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.
Answers: 2
Chemistry, 22.06.2019 12:00
What term is applied to a scientist who studies ancient life, including animal and plant fossils a. anthropologist b. dendroclimatologist c. geophysicist d. paleontologist
Answers: 2
Chemistry, 22.06.2019 22:30
Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.
Answers: 2
Chemistry, 23.06.2019 04:20
The equation below shows the reaction of zinc with hydrochloric acid (hcl). zn (s) + 2 hcl (aq) —> zncl2 (aq) + h2 (g) what will happen if the concentration of hcl is decreased? a. more zncl2 will be produced. b. the reaction rate will slow down. c. the hydrochloric acid will become more acidic. d. the reaction will produce water instead of hydrogen gas.
Answers: 1
A certain hydrocarbon CxHy, is burned (reacts with O2gas) and produces 1.955 grams of CO2 for every...
Mathematics, 07.11.2019 05:31
Chemistry, 07.11.2019 05:31
Mathematics, 07.11.2019 05:31
Mathematics, 07.11.2019 05:31
Mathematics, 07.11.2019 05:31
Mathematics, 07.11.2019 05:31
History, 07.11.2019 05:31
Mathematics, 07.11.2019 05:31
Mathematics, 07.11.2019 05:31
Mathematics, 07.11.2019 05:31