Related FAQs

• 200cm^3of hydrogen combines with 50cm^3 of oxygen to form water at 100°c (1) which has is in excess (2) by what amount (3) what's the volume of the product (4) what's the volume of the residual gases
• 25.0 cubic meter of sodium nitrate solution requires 45 cubic meter of 0.200 mol dm^-3 of potassium manganate solution for oxidation what is the concentration in gram dm^-3of sodium nitrate solution
• Write the expression for the equilibriumconstant Keq for the reaction below:rnrn1) N2(g) + 3h2(g) → 2nh3(g)rnrnusing the equilibrium constant expressions youdetermined in column 1, calculate the value of Keqwhen the following concentrations are present:[n*h_{3}] = 0.01m [n_{2}] = 0.02m [h2] =0.0200
• What volume of ethanoic acid (in cm3) is needed to prepare 200 cm3 of a buffer that has a ph of 4.75? (pka of ethanoic acid is 4.75). Assume that the solutions of acid and base have equal concentrations. rnrnreport your answer as a whole number in cm3 but do NOT include units.
• The exact volumes of 1 m NaOH solution required to neutralize 50 ml of 1 m H3PO3 solution and 100 ml of 2 m H3PO2 solution, respectively, are:rn(a)rn50 ml and 50 mlrn(c)rn100 ml and 200 mlrn[2 M]rn(B)rn100 ml and 50 mlrn(d)rn100 ml and 100 ml
• The exact volumes of 1 m NaOH solution required to neutralize 50 ml of 1 m H3PO3 solution and 100 ml of 2 m H3PO2 solution, respectively, are:rn(a)rn50 ml and 50 mlrn(c)rn100 ml and 200 mlrn[2 M]rn(B)rn100 ml and 50 mlrn(d)rn100 ml and 100 ml
• 20 ml of x m HCl neutralises completely 10 ml of 0.1 m NaHCO3 and a further 5 ml of 0.2 m Na2CO3 solution to methyl orange end point. The value of x is:rn[2 M]rn(A)rn0.167 Mrn(B)rn0.133 Mrn(C) 0.150 Mrn(D)rn0.200 m
• Best surfactants to emulsify polypropyleneglycol 2000 dioleate into water
• How many grams are there in 0.0200 mol of nicotine, a yellow liquid? [use formula mass: nicotine, 162.2 amu]rngroup of answer choicesrnrn1.23 × 10-4 grnrn0.308 grnrn3.24 grnrn32.4 grnrn8.11 × 103 g
• Which of the following has the largest density?rngroup of answer choicesrnrna 10-g object with a volume of 1 mlrnrna 1-g object with a volume of 10 mlrnrna 200-g object with a volume of 200 mlrnrna 10-g object with a volume of 10 ml