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An airbag was determined to have a maximum volume of 4.5 liters. If the most effective inflation percentage was 95% of the maximum, how much of each reactant below is needed at STP (standard temperature and pressure)? Acetic acid: 0.250 molar.
NaHCO3(s) + CH3COOH(aq) à H2O (l) + CO2 (g) + CH3COONa (aq)
Calcium carbonate decomposes to form calcium oxide and carbon dioxide on strong heating. What is the volume of carbon dioxide released, measured at r.t.p, when 10.5 g of calcium oxide is formed?
when chemists are preparing dilute acid solutions in water they follow the proverb always add acid explain why this is
A plot of ln k vs. 1/T for the decomposition of dinitrogen pentoxide yielded a slope = -7.85 x 105 and a y-intercept = 35.2. whats its activation energy
What is the expected freezing point of a solution prepared by dissolving 4.25g of naphthalene (C10H8) in 26.4g of benzene (C6H6)? T-5.53C and K-5.12C
the heat of combustion of hexane is 995.0 kcalmol. how much energy is released during the complete combustion of 453
Explain what is meant by the term dynamic equilibrium - distinguish between heterogeneous and homogeneous equilibria.
Consider the subsequent reaction at equilibrium. Explain what effect will increasing the pressure of the reaction mixture have on the system. 2 H2S(g) + 3 O2(g) ? 2 H2O(g) + 2 SO2(g)
How many grams of sodium formate, NaCO2H are needed to prepare 100 ml of a formic acid, sodium formate buffer
If the pressure is increased to 120 bar, the melting temperature increases to 375.88 K. Calculate DeltaHo fusion and Delta So fusion for this substance
Given this data for oxygen (O2), sketch its phase diagram. Label: solid, liquid, gas, normal boiling point, normal melting point, triple point, and critical point.
A sample of hard water has 1.5g Ca+2 in every 500mL of water. Calculate the molality an ppm Ca+2 in this sample.
The acid-dissociation constants of phosphoric acid (H3PO4) are Ka1 = 7.5 × 10-3, Ka2 = 6.2 × 10-8, 25) and Ka3 = 4.2 × 10-13 at 25.0 °C.
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