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What is the pressure of 2.0 moles of a gas at a volume of 5.0 liters and a temperature of 400 K? (Use R = 0.0821 L·atm·K⁻¹·mol⁻¹)

What is the electron configuration of Sodium (Na)?

How many protons are in a sodium ion (Na⁺)?

A compound is found to contain 40.00% carbon, 6.67% hydrogen, and 53.33% oxygen by mass. The molar mass of the compound is 120.10 g/mol. What is the molecular formula?

If a gas effuses at a rate of 9.00 mL/s while nitrogen (N₂) effuses at a rate of 6.00 mL/s at 298 K, what is the molar mass of the gas? (Molar mass of N₂ = 28 g/mol)

What is the empirical formula of benzene (C₆H₆)?

What is the molar mass of sodium chromate (Na₂CrO₄)?

What is the ground state electron configuration of Chlorine (Cl)?

What is the role of gap junctions in cardiac muscle cells?

What structure anchors the atrioventricular valves to the heart muscle?