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2C2H6(g)+7 O2(g)= CO2(g) +H2O (l)
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a. HNO3 +NaOH= NaNO3+ H20; there are 0.90 mol HNO3, 0.85 mol NaOH
b. Ca(HCO3)2 +2 HCL = CaCl2+ 2CO2+ 2H2O; There are 2.5 mol HCl, 1 mol Ca(HCO3)2
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Write an equation that shows the formation of a cesium ion from a neutral cesium atom.
What is the pH of the solution that results from adding 42.8 mL of 0.150 M HCℓ to 23.9 mL of 0.650 M NH3?
A 42.2 mL sample of 0.120 M HCℓO4 is titrated with a 0.140 M KOH solution. What is the pH after the addition of 47.4 mL of KOH?
A 0.405 g sample of propanoic acid (CH3CH2COOH, Ka = 1.3. x 10-5) was dissolved to a final volume of 50.0 cm3. This solution underwent titration with 0.21 M NaOH. Calculate the pH of solution at the equivalence point.
a popular car has a gas tank that holds a maximum of 14.5 gallons of fuel. what is the size of the tank in liters?
Consider a buffer solution made up of H2PO4- and HPO42-. What mole ratio of HPO42- / H2PO4- will give a pH of 6.95? Ka = 6.3 x 10-8
Calculate the pH of a solution that is 0.253 M in nitrous acid (HNO2) and 1.687 M in potassium nitrite (KNO2). The Ka value of nitrous acid is 4.50 × 10-4.
#333702 on Dec 2022