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Which of the subsequent pairs of ions is arranged so that the ions with the smaller charge density are listed first?1. K+ , Rb+2. Cl- , K+3. Cl- , Br-4. Ca2+ , Ba2+5. None of these pairs are arranged in this way.
The voltage across the leads of a glass pH-reference combination electrode immersed in a solution of pH 8.00 was 133 mV. Calculate the expected voltage if the pH of the solution is raised to 9.00
Which of the 5 most common active ingredients is the most effective by mass at neutralizing excess stomach acid
if 5.50 mol calcium carbide reacts with an excess water, how many moles of acetylene will be produced?
the fraction of the initial mass of gas remaining in the tank if carbon dioxide obeys the ideal gas and PR equations of state
Calculate the work (in kJ) when 3.00 moles of hydrogen gas are produced from the reaction of sodium in excess water at 298 K:
Consider the following reaction at constant P. Use the information here to determine the value of ?Ssurr at 355 K. Predict whether or not this reaction will be spontaneous at this temperature.
solution has an osmotic pressure of 3.80torr at 35?C. What is the molar mass of the protein?
dissolved in enough water to make 250.0 mL of solution. Write the hydrolyis reaction for the ion that controls the pH, and calculate the pH
A steel alloy to be used for a spring application must have a modulus of resilience of at least 2.07 MPa (300 psi). What must be its minimum yield strength. The modulus of elasticity is 207 GPa (30 × 106 psi)
what is the balanced equation of aluminum reacts with ammonium perchlorate to produce aluminumn oxide, aluminum chloride, nitrogen monoxide, and 110g of water.
How are gases affected under different atmospheric pressures? In what ways might this affect you if you are moving to a different elevation?
A 635 mL sample of unknown solution reacts completely with to form 19.1g CO2 . What was the concentration of the solution?
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