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Pentane is burnt with 96000 cm3 of oxygen gas at room temperature and pressure.


a) write the balance chemical equation for the reaction.


b) calculate the volume of carbon dioxide in cubic centimeters produce in the reaction at room temperature and pressure


c) calculate the mass of zinc needed to react with 50 cubic centimeters of 0.8 M of Hydrochloric acid

The stability of alkali salts depends on the ___________ of the salts


The sp3 hybrid orbitals has _______ shape?


Determine the number of moles of Pd in 4.80 x 1021 atoms of Pd.




nitric oxide?

What mass of CaH3N can be made when 21.6 g of CaH6 react with 21.6 g of


C5H12 (l) + 8O2 (g) → 5CO2 (g) + 6 H2O (g)


1. Given 4.3 x 1024 atoms of oxygen (O), how many moles of carbon dioxide (CO2) are present? Answer with 2 sig figs.



What is the pressure of 3.5 miles of gas at 1.1 kilo pascals and 420 Kel


If pressure is expressed in atmospheres and volume is expressed in liters, PΔV has units of L atm (liters × atmospheres). Remember that 1 atm = 101,325 Pa, and that 1 L = 1 dm3. Use this information to determine the number of joules corresponding to 2 L atm.


What is the solution of measuring 25ml of a0.2 hydrochloric acid into a conical flask and titrated with sodium hydroxide.It was found that 15ml of sodium hydroxide was needed to neutralize the acid.(a)Write a balanced chemical equation for the reaction.(b)calculate the concentration of the sodium hydroxide solution.(c).Calculate the ph of the acid is 1.4×10^-5M.

Calculate the rate at the instant when [A]=2×10-⁴, [B]= 3×10-⁴, and [C]=2×10-³