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1. A gas pressure od 5,0 atm is compressed at constant temperature from 10,0L to 2,0L. What is the pressure of the gas after it is compressed? 4,0π‘Žπ‘‘π‘š 1,0 Γ— 102π‘Žπ‘‘π‘š 1,0π‘Žπ‘‘π‘š 0,40π‘Žπ‘‘π‘š 25π‘Žπ‘‘π‘š 2. What mass of helium is contained in a 2,0L baloon at 30,0Β°C and 735mmHg? 26,5 0, 477𝑔 514𝑔 66,1𝑔 0,312𝑔 3. A gas occupies a volume od 500L when the pressure is 4,00atm and the temperature is 50,0 K. What will be the volume occupied by this sample when the pressure is increased to 8,00 atm and the temperature s increased to 200,0 K? 40,0L 25,6L 20,0L 10,0L 0,625L 4. Which is capable of forming intermolecular hydrogen bonds (H-bonds)? 𝐻2 𝐢𝐻3𝐢𝐻2𝑂𝐻 β„Žπ‘¦π‘‘π‘Ÿ0𝑔ⅇ𝑛 π‘π‘¦π‘Žπ‘›β…ˆπ‘‘β…‡ 𝐻𝐢𝑁 nitrogen trifluoride NF3 all of the above 5. Strontium reacts with fluorine gas to form an ionic compound. What is the reducing agent? π‘†π‘Ÿ π‘†π‘Ÿ 2+ 𝐹2 𝐹 βˆ’ π‘†π‘ŸπΉ2 6. What is the oxidation number of sulfur in magnesium sulfite, MgSO3? -1 -2 +2 +4 +6

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