Chemistry, 26.10.2020 03:20 tamiawilliams3pe55hs
Which of the following substance used to selectively absorb certain frequencies of light and transmit or reflect the rest; responsible for object's colour?
A. Reflection
B. Refraction
C. Pigment
D. Tyndall scattering
Answers: 3
Chemistry, 21.06.2019 23:00
Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.
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Chemistry, 22.06.2019 00:00
Which type of bonding involves the complete transfer of a valence electron from a less electrogrative atom to a more electronegative one
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Chemistry, 22.06.2019 06:00
24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm
Answers: 2
Chemistry, 22.06.2019 12:00
Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon
Answers: 2
Which of the following substance used to selectively absorb certain frequencies of light and transmi...
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