Chemistry, 03.02.2020 06:46, dyllanmasters99
Cell phones depend on both mechanical and electromagnetic waves to be useful. which answer below correctly identifies how each wave is used in cell phones?
a. mechanical waves allow the buttons to be pressed to make a call; electromagnetic waves allow a signal to be picked up when making a call
b. mechanical waves light up the screen; electromagnetic waves create the sound when the phone is ringing
c. mechanical waves allow the cell phone to emit a sound when ringing; electromagnetic waves allow a signal to be picked up when making a call.
d. mechanical waves allow a signal to be picked up when making a call; electromagnetic waves allow the cell phone to emit a sound when ringing
Answers: 2
Chemistry, 22.06.2019 02:50, giiffnlojd
Using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 pb+2(aq) + 2cl -(aq). if the value of ksp was determined to be only 1.2 x 10-2: too much solid has dissolved. additional precipitate is forming. the solution is unsaturated. the ions are now combining to reduce their concentrations.
Answers: 3
Chemistry, 22.06.2019 08:40, jeffcarpenter
What is the value of keq for the reaction expressed in scientific notation?
Answers: 1
Chemistry, 22.06.2019 10:50, lejeanjamespete1
8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm
Answers: 1
Cell phones depend on both mechanical and electromagnetic waves to be useful. which answer below cor...
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