What is the partial pressure of water vapor in an air sample when the total pressure is 1 atm, the partial pressure of nitrogen is 0.79 atm, the partial pressure of oxygen is 0.20 atm and the partial pressure of all other gases in air is 0.0044 atm?

Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.

Vi limitens. vastery test select the correct answer. which statement explains why large atoms are more reactive than small atoms? a. large atoms have valence electrons farther from the nucleus and lose them more readily. b. large atoms have greater ionization energy, which they can utilize during a reaction. c. large atoms have a greater number of electrons that they can lose during a reaction. d. large atoms have more energy levels, so they have more energy to pass on in a reaction. reset next

What type of context clue you understand the meaning of  quandary?