Which of the following is the standard unit of volume? a. liter b. mm Hg c. second d. torr 8. Who formulated the law which states that the volume of a fixed amount of gas at constant pressure is directly proportional to its absolute temperature? a. Amedeo Avogadro b. Jacques Alexander Charles c. Joseph Louis Gay-Lussac d. Robert Boyle 9. Which of the following best describes Avogadro’s Law? a. At constant pressure and volume, the temperature of gas is directly related to its number of moles b. At constant temperature and pressure, the volume of gas is directly related to its number of moles c. At constant volume and number of moles, the temperature of gas is directly related to its pressure d. At constant volume and temperature, the pressure of gas is directly related to its number of moles 10.Which of the following expresses an inverse proportionality? a. As n increases, P increases b. As n increases, V increases c. As P increases, V decreases d. As T decreases, P decrease
Answer (1)
7. A. liter – The liter (L) is a common unit of volume, though the SI (International System of Units) standard unit is the cubic meter (m³).8. B. Jacques Alexander Charles – This is Charles's Law, which states that V ∝ T (volume increases with temperature when pressure is constant).9. B. At constant temperature and pressure, the volume of gas is directly related to its number of moles – Avogadro’s Law states that V ∝ n, meaning that more gas molecules (moles) take up more volume if temperature and pressure remain the same.10. C. As P increases, V decreases – This is Boyle’s Law, which states that P ∝ 1/V (pressure and volume are inversely related when temperature and moles are constant).
