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A gas mixture in a container has 0.176 mol H2  and 0.631 mol He. The total pressure in the container is 2.91 atm. What is the partial pressure of helium gas? 

Determine if the following interactions are hydrogen bonds?    1 is [1] 2 is [2] 3 is [3]  

What volume in milliliters of 0.0345 M calcium hydroxide (Ca(OH)2) is needed to neutralize 565 mL of 0.0670 M hydrochloric acid (HCl)?

Based on the following hypothetical Lewis structure given X has 6 valence electron and Z has 4 valence electrons, what is the formal charge of on Z?  

Compute the derivative of the function. y = x 3 x – 1 NOTE: USE THE EQUATION TOOL TO SUBMIT YOUR ANSWER.

Evaluate the integral. ∫ x 5 e – x 6 d x

Determine the correct symbol for the following elements: Gold is [1] Potassium is [2] Carbon is [3]

If 131 mg of tetraphosphorous decoxide reacts with 112 mg of water, how many grams of phosphoric acid can be produced? 

What is the name of S2O5?

Based on the successive ionization energies of an unknown element in the table provided, how many valence electrons does the element have?  Successive Ionization energies Number of Electrons Removed Ionization Energies (kJ/mol)  1 1000 2 2000 3 5000 4 7,500 5 21,000 6 23,000 7 25,000