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Which of the following set of quantum numbers {n, l, ml, ms} is possible for an electron in the 4d orbital? 

Calculate the pressure exerted by 7.8 moles of an ideal gas in a 39 L vessel at 43°C.

Which of the molecules below have resonance structures?  Number 1 has resonance structures [1] Number 2 has resonance structures [2] Number 3 has rresonance structures [3]

Determine the amount of heat released (in kilojoules) when 12.20 grams of ethane, C2H6, undergoes combustion according to the following equation: 2C2H6 (g) + 7O2 (g)

Which of these ions has the largest radius (Se2-, Br-, Rb+, or Sr2+ )? 

Which of the following statement(s) about phase transitions is/are correct? Sublimation refers to the phase transition from solid to gas. Vaporization refers to the phase transition from liquid to gas. Freezing refers to the phase transition from solid to liquid

Determine the amount of heat released (in kilojoules) when 18.20 grams of ethane, C2H6, undergoes combustion according to the following equation: 2C2H6 (g) + 7O2 (g) 

How many significant figures would 0.01050 g have?  

Determine the molarity of a solution when 17.21 g of the hypothetical molecule Q2X6 is dissolved in enough water to create 225.0 mL of solutions. (Use the information about the elements provided below.)

Which of the following statement(s) about phase transitions is/are correct? Freezing refers to the phase transition from solid to liquid Sublimation refers to the phase transition from solid to gas. Vaporization refers to the phase transition from liquid to gas.