How many valence electrons are in a sodium (Na) atom and a sodium ion (Na⁺)?

What volume of carbon dioxide gas (CO₂) is produced when 50.0 L of ethane gas (C₂H₆) reacts completely with 60.0 L of oxygen gas (O₂) at STP? 2C₂H₆(g) + 7O₂(g) → 4CO₂(g) + 6H₂O(g) 1 mol = 22.4 L (at STP)

What volume of carbon dioxide gas (CO₂) is produced when 56.0 L of methane gas (CH₄) reacts completely with 44.0 L of oxygen gas (O₂) at STP? CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(g) 1 mol = 22.4 L (at STP)

Consider the following reaction:  2Al(s) + 3Cl₂(g) → 2AlCl₃(s)  ΔHrxn = −1408 kJ Calculate the amount of heat (in kJ) associated with the complete reaction of 3.00 moles of Al.

If the volume of a gas container at 27.0 °C changes from 2.00 L to 3.00 L, using Charles’s law, what will the final temperature be?

This bonus question is worth 5 points and is set to 0 points in Canvas. If correct, I will add the points to your overall grade after review. Skipping it will not affect your Test 3 grade. Bonus 2 What is the density (g/L) of a gas with molar mass 64.1 g/mol at pressure of 885 mm Hg  and temperature of -43.0 oC? R = 0.0821 L·atm/mol·K; 1 atm = 760 mmHg.

What is the equivalent pressure of 1520 mm Hg in units of atm? 1 atm = 760 mm Hg

What is the density of carbon dioxide gas (CO₂) at STP? Molar mass of CO₂ = 44.0 g/mol; 1 mol = 22.4 L (at STP)

A patient develops thickening of the alveolar-capillary membrane. Which effect is expected according to Fick’s law?

Which change would increase gas diffusion across the alveolar-capillary membrane according to Fick’s law?