CH 124 - 002 General Chemistry (Web-Enhanced) Spring 2025 L.Liban
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by emitting radiation.
Name the type of radiation.
The isotope 99m43Tc decays to 9943Tc by emitting radiation. Name the type of radiation.
How many moles of gas are there in a gas-filled balloon, which has a volume of 67.0 L at a pressure of 742 mmHg and a temperature of 25.0°C?
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A helium-filled weather balloon is launched from the ground where the pressure is 752 mmHg and the temperature is 21°C. Under these conditions its volume is 75.0 L. When it has climbed to an altitude where the pressure is 89 mmHg and the temperature is 0°C, what is its volume?
10.0 grams of octane are burned in a bomb calorimeter containing 2.00 × 102 g H2O. How much energy, in kilocalories, is released if the water temperature increases by from 25.0oC to 37.0oC? 1000 cal = 1 Kcal
A helium-filled weather balloon is launched from the ground where the pressure is 752mmHg and the temperature is 21°C. Under these conditions its volume is 75.0 L. When it has climbed to an altitude where the pressure is 89 mmHg and the temperature is 0°C, what is its volume?
by emitting radiation.
Name the type of radiation
How much heat is required to raise the temperature of a 6.21-g sample of iron (specific heat = 0.450 J/(g°C) from 25.0°C to 79.8°C?
] of a KOH solution
which has a pH = 10.00.
What is the molarity of a solution if 4.50 g NaF is dissolved in enough water to make 250.0 mL of solution? 1000ml =1L
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