Physics, 23.07.2019 13:30 bNicholson23
Ascientist is studying a previously unknown chemical reaction. she concludes that it is exothermic. what must the scientist have observed? (2 points) the reaction released heat. the reaction formed a gas. the reaction sped up when a catalyst was added. the reaction caused the container to get cold.
Answers: 1
Physics, 21.06.2019 18:40, Gloryreak8201
What best describes a sonar wave? transverse and electromagnetic transverse and mechanical longitudinal and electromagnetic longitudinal and mechanical
Answers: 1
Physics, 21.06.2019 19:30, nayashuntel
Asample of a gaseous substance changes into a liquid
Answers: 1
Physics, 22.06.2019 10:00, he0gaubong
Which atomic model was proposed as a result of j. j. thomson’s work?
Answers: 1
Physics, 22.06.2019 11:20, cjd1214812148
The ultracentrifuge is an important tool for separating and analyzing proteins. because of the enormous centripetal accelerations, the centrifuge must be carefully balanced, with each sample matched by a sample of identical mass on the opposite side. any difference in the masses of opposing samples creates a net force on the shaft of the rotor, potentially leading to a catastrophic failure of the apparatus. suppose a scientist makes a slight error in sample preparation and one sample has a mass 10 mg larger than the opposing sample. if the samples are 12 cm from the axis of the rotor and the ultracentrifuge spins at 70,000 rpm, what is the magnitude of the net force on the rotor due to the unbalanced samples? ( be thorough on your answer)
Answers: 3
Ascientist is studying a previously unknown chemical reaction. she concludes that it is exothermic....
Social Studies, 28.07.2019 12:00
History, 28.07.2019 12:00
Chemistry, 28.07.2019 12:00
Mathematics, 28.07.2019 12:00
Chemistry, 28.07.2019 12:00
Mathematics, 28.07.2019 12:00
English, 28.07.2019 12:00