A1.42-g sample of a pure compound, with formula m2so4, was dissolved in water and treated with an excess of aqueous calcium chloride, resulting in the precipitation of all the sulfate ions as calcium sulfate. the precipitate was collected, dried, and found to weigh 1.36 g. determine the atomic mass of m, and identify m.
Answers: 3
Physics, 21.06.2019 22:30
Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.
Answers: 1
Physics, 22.06.2019 19:00
Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.
Answers: 3
Physics, 23.06.2019 10:00
The molecular weight of oxygen gas (o2) is 32 while that of hydrogen gas (h2) is 2. prove that under same physical conditions, the velocity of sound in hydrogen is four times that in oxygen
Answers: 1
A1.42-g sample of a pure compound, with formula m2so4, was dissolved in water and treated with an ex...
History, 28.02.2020 19:31
Advanced Placement (AP), 28.02.2020 19:31
Health, 28.02.2020 19:31
Mathematics, 28.02.2020 19:31
Mathematics, 28.02.2020 19:31
Computers and Technology, 28.02.2020 19:31
Chemistry, 28.02.2020 19:31
Computers and Technology, 28.02.2020 19:31
Biology, 28.02.2020 19:31