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Consider a glass of 298 mL of water at 30°C. Calculate the mass of ice at -15°C that must be added to cool the water to 10°C after thermal equilibrium is achieved. To find the mass of water use the density of water = 1.0 g/mL.
If a sample containing 2.11 mL of nitroglycerine (density = 1.592 g/mL) is detonated, how many total moles of gas are produced?
What is the identity of the atom A When a solution containing .634 grams of ACl 3 was permitted to combine with an excess of aqueous silver nitrate AgNO 3
How much heat is required to warm 223 g of ice from -44.3°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C?
For the given reaction, 2 HCl (aq) + Ba(OH)2 (aq) BaCl2 (aq) + 2 H2O (l) 73.0 grams of HCl are allowed to react with 342 grams of BaCl2.
2NO2 + Cl2 = 2NOCl The inital pressure of NO2 was 1.577 atm and the inital pressure of Cl2 was 0.427 atm. At equilibrium, the partial pressure of NOCl is 0.624 atm. Calculate K.
How many moles of atoms are in each of the following? 4.1*10^24 Pb atoms ,2.15*10^22 He atoms
Calculate the pH of a solution formed by mixing 65 mL of 0.31 M NaHCO3 with 75 mL of 0.10 M Na2CO3.
Carbon-carbon single bonds in organic molecules have energies about 350 kj/mol. What is the corresponding wavelength.
Titrations: Finding Concentration, A 35.00 mL solution containing an unknown concentration of pyruvic acid required 25.13 mL of 0.2011 M NaOH to reach the end point.
A water pipe fills a container that measures 189 cm , 307 cm ,272 cm in 97 seconds, What is the rate of flow in the pipe in liters per minute.
A compound is constituted by mass of 22.6% phosphorus, the rest being chlorine. Given that a volume of 307 mL of the gas has a mass of 1.55 g at 25 °C and 90 kPa, find the molecular formula for this compound
Calculate the amount of heat liberated (in kJ) from 351 g of mercury when it cools from 88.0°C to 15.0°C.
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