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1. Chemistry Item 04-03 Avogadro’s Law relates the volume and what variable? A. moles B. pressure C. size of particles D. temperature www.upcatreview.com
2. Chemistry Item 04-03 CONCEPT : The properties of a gas may be described using the following variables: volume, temperature, pressure and amount in terms of no. of moles. Relating any of these variables with another comprise what is known as the gas laws. The following are the different gas laws: www.upcatreview.com
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11. Chemistry Item 04-03 We use the concepts just mentioned to answer questions 1-3. Among the options in question #1, the formula which correctly describes Charles’ Law is V 1 T 2 = V 2 T 1 ( letter C ). Charles Law relates volume and temperature at constant pressure. www.upcatreview.com
12. Chemistry Item 04-03 Question #2 is an application of Boyle’s Law since the problem relates the pressure with volume at constant temperature. According to Boyle’s Law, pressure is inversely related with volume that is as the pressure increases, the volume decreases and vice versa. www.upcatreview.com
13. Chemistry Item 04-03 In the problem, the pressure is decreased to one-half the original pressure. In this case, the volume is expected to change opposite that of the change in pressure. Thus if the pressure decreased to one-half the original pressure, the volume will increase twice the original volume or will double ( letter A ). www.upcatreview.com
14. Chemistry Item 04-03 Among the gas laws, Avogadro’s Law is the one which relates the volumes of different gases with the number of particles expressed in moles. Thus for question #3, the answer is moles ( letter A ). www.upcatreview.com
