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Which of the following would increase cortisol levels?

You have a sample of 1g of pure sodium (Na) and a sample of 1g of pure potassium (K). Which sample contains the LARGER number of atoms?

Which structure is known as the “pacemaker” of the heart?

Give the complete ionic equation for the reaction (if any) that occurs when aqueous solutions of MgSO3 and HI are mixed.

Ascorbic acid is Vitamin C, an essential dietary component since humans don’t make it themselves. Its pKa is 4.2. In human serum, that is buffered to pH 7.3, will vitamin C be primarily in the neutral form or the conjugate base anion ionized form?  

In neutral water at pH 7 the concentrations of H3O+ and -OH are identical, both are 10-7 M. If hydrochloric acid is added to neutral water such that the pH decreases to 3.0, what is the concentration of -OH after addition of the acid? pH = -log10 [H3O+] Kw  = 1 × 10-14

What is the recommended number of foot contacts for an athlete with intermediate experience in plyometrics? 

Which of the following substances can be metabolized anaerobically?

When aqueous solutions of AgNO3 and KI are mixed, silver iodide precipitates. The balanced net ionic equation is ________.

When the following equation is balanced, the coefficient of HCl is __________.