Chemistry, 01.09.2020 21:01, darius12318
Students observed rust forming on a bar of pure iron. Which of the following provides evidence that the change to the iron bar was a chemical change?The melting point of pure iron is approximately 1,500C. The mass and the volume of the rust can be measured. The iron bar is able to conduct electricity even after rust forms. The rust is a new substance that is not pure iron.
Answers: 3
Chemistry, 22.06.2019 07:30, superfly903
Plz mark brainliest 30 points 1) find the momentum of a 12 kg snowball that is rolling with a velocity of 9 m/s. 2) an 8 ball with a mass of .5 kg is sitting at rest. it is hit by the cue ball (1 kg) traveling at 2.5 m/s. if the cue ball is at rest after the collision, how fast is the 8 ball traveling after the collision? 3) two football players are running toward each other. if the offensive player is 75 kg and is running 8 m/s, how fast must the 60 kg defensive player run in order for the two players to hit and stop?
Answers: 1
Chemistry, 23.06.2019 13:30, MalikaJones
Determine the rate law, including the values of the orders and rate law constant, for the following reaction using the experimental data provided. a + b yields products trial [a] [b] rate 1 0.30 m 0.25 m 1.2 × 10-2 m/min 2 0.30 m 0.50 m 4.8 × 10-2 m/min 3 0.60 m 0.50 m 9.6 × 10-2 m/min
Answers: 1
Chemistry, 23.06.2019 16:00, lucy773
Henry moseley used x-ray experiments to determine the atomic number of elements. how did his discovery contribute to the development of the periodic table? a. it confirmed that elements should be arranged in strict order of increasing atomic mass. b. it led to elements with similar atomic numbers being grouped together. c. it allowed the elements to be placed in strict order of increasing atomic number. d. it showed that the way mendeleev grouped elements together was completely wrong.
Answers: 1
Students observed rust forming on a bar of pure iron. Which of the following provides evidence that...
Mathematics, 10.01.2020 23:31
Mathematics, 10.01.2020 23:31
Mathematics, 10.01.2020 23:31
Mathematics, 10.01.2020 23:31