General Chemistry Answers

Use the half-reaction method to balance the following equation and then identify the oxidizing and reducing agents:

Fe(OH)_{2 (s)} + Pb(OH)₃ ^-_(aq)    →  Fe(OH)_{3 (s)} + Pb_(s) [basic]

The equilibrium constant kp for the oxidation of sulfur dioxide into sulfur trioxide is 5.6x10^4 at 350 celsius. if the equilibrium partial pressures of SO2 and SO3 are 0.64 atm and 0.58 atm, respectively,, what is the partial pressure of O2 in the system?

How many moles of helium would give a pressure of 900 mm Hg in 25.0 L vessel at

500C?

acetylene is formed by the reaction of water with calcium carbide according to the following eqation CaC2 +2H2O->Ca(OH)2 +C2H2 .how many grams of CaC2 would be needed to produce 10 L (measured at STP) acetylene .

An elevated level of sodium ions in the blood would be 0.155 mol L^-1 and would be cause for concern. The average adult female has a total blood volume of 4.70 L. Calculate the total mass of sodium ions present when this concentration is found, assuming a blood volume of 4.70 L. 

Determine the pH

pH of each of the following solutions.

Part A

4.0×10⁻² M

M HI

Complete the balanced molecular chemical equation for the reaction below. If no reaction occurs, write NR after the reaction arrow.

An ingestion tablet contains a mass of 0.30 g of magnesium hydroxide [Mg(OH)2] as its only basic ingredient. The balanced chemical equation between magnesium and hydrochloric acid (HCl(aq)), the acid produced in the stomach is as follows:

          Mg(OH)2(aq) + 2HCl(aq) ⟶ MgCl2(aq) + 2H2O(l)

(i) Calculate the volume of 1.00 M HCl neutralised by two of these ingestion tablets?

(ii) What mass of the salt is formed in this neutralisation reaction?

(iii) How many magnesium ions are present in this amount of a salt?

an electron (m_e = 9.10939 × 10^–28 g) moving at 4.20 × 10⁶ m/s in an electron microscope

Why is the V soln .1?, Isn't that just the solvent?