9. A container holds 50.0 ml of nitrogen at 25 C and a pressureo volume if the t
ID: 588713 • Letter: 9
Question
9. A container holds 50.0 ml of nitrogen at 25 C and a pressureo volume if the temperature increases by 35 C? 10. A sample of oxygen the temperature drops to 0.00° C? toccupies a volume of 160 dm2 at 91 c. what will be volume of orygen when rogen has an initial temperature of 50 ° C. when the temperature is lowered to C, the volume of hydrogen becomes 212 cm2. What was the initial volume of the hydrogen 11. A sample of hyd in dm3 ? ml of 1.6 M NaOH at 25.15 C is added to 25 ml of 1.79 M HCI at 26.34 C in a plastic foam cup calorimeter, what will be solution temperature be immediately after the neutralization reaction has occurred? 12. The heat of neutralization of HCI ) by NaOH is -55.9 kJ/mol with each mol H2O produced. If 50 13. What is energy in joules for an atom that releases a photon with a wavelength of 320 nm?Explanation / Answer
9)
we have:
V1 = 50 mL
T1 = 25 oC
= (25.0+273) K
= 298 K
T2 = 25 + 35
= 60 oC
= (60+273) K
= 333 K
we have below equation to be used:
V1/T1 = V2/T2
50.0 mL / 298.0 K = V2 / 333.0 K
V2 = 56 mL
Answer: 56 mL
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