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The calorimeter contains 1.00 kg of water (heat capacity of H2O = 4.184 J/g C) and the heat capacity of the empty calorimeter is 0.10 kJ/ C. How much heat is released per gram of oil shale when it i
Pure ethanol has a density of 0.78945 g/cm ³ at 20.0 °C and 0.80625 g/cm³ at 0.0° C. What will be the difference in mass that a 500.0mL flask will hold at 0.0°C from that at 20
A 2.00 liter aluminum cylinder at 5°C is filled to the brim with gasoline at the same temperature. If the aluminum and gasoline are warmed to 60.0°C, how much gasoline spills out? [Hint: Be
You need 100.00 mL of H2O and 5.00 mL of liquid plant food to make a solution for your plants. The density of liquid plant food is 1.21 g/cm3 and 1 cm3 = 1 mL. How much of the liquid plant food would
A concave shaving mirror has a radius of curvature of 24.0 cm. It is positioned so that the (upright) image of a man's face is 2.50 times the size of the face. How far is the mirror from the face?
A 23.43 g sample of a substance is initially at 24.2 °C. After absorbing 2167 J of heat, the temperature of the substance is 122.0 °C. What is the specific heat (c) of the substance?
If the pressure increases to 800. torr, how many moles of gas were added to the container? Assume a constant-volume container.
Calculate the amount of heat must be added to accomplish this change, the final temperature of steam, the work does against its surroundings, and the internal energy and enthalpy changes of the stea
Consider the reaction CaCO3(s) = CaO(s) + CO2(g) , at equilibrium at a certain temperature. What species will be present after equilibrium is re-established?
An 11.0 m, 280 N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.60, and the ladder makes a 50.0° angle with the ground. How
If the methane contained in 2.00 L of a saturated solution at 25 C was extracted and placed under STP conditions, what volume would methane occupy?
A 3.6 kg bucket of water is raised from a well by a rope. If the upward acceleration of the bucket is 3.8 m/s2, find the force exerted by the rope on the bucket of water.
The half-life of tritium (31H) is 12.3 years. what mass of the nuclide will remain after 24.6 years? What mass of the nuclide will remain after 98.4 years?
how many grams of aluminum hydroxide are obtained from 18.2g of aluminum sulfide?Aluminum sulfide reacts with water to form aluminum hydroxide and hydrogen sulfide.
A 2.3 kg ball strikes a wall with a velocity of 8.3 m/s to the left. The ball bounces off with a velocity of 7.1 m/s to the right. If the ball is in contact with the wall for 0.23 s, what is the co
Describe the relationship between wind and waves. Describe the parts of a wave and the characteristic water motion involved in wave movement. How do the erosive power of waves and wave characterist
Calculate the minimum quantity of 20°C water needed to dissolve all the KCl from the sample. How much KClO3 will be left after this treatment?
How far from the point of firing does the other fragment strike if the terrain is level?
A cube of ice is taken from the freezer at -9.2 and placed in a 109 aluminum calorimeter filled with 320 of water at room temperature of 20.0 . The final situation is observed to be all water at 15
Although newly minted pennies look as though they are composed of copper, they actually contain 2.7% copper with zinc being the rest of the metal. If the densities of copper and zinc are respectivel
Calculate the freezing point of a solution that contains 68.4 g of sucrose (table sugar) in 300. g of water. One mole of sucrose is 342 g. Kf for H2O = 1.86 oC/m.
The rocket attains its launch speed in a negligibly short period of time, after which its engines shut down and the rocket coasts. By how much does the rocket clear the top of the wall?
Four 6.5 kg spheres are located at the corners of a square of side 0.80 m. Calculate the magnitude and direction of the total gravitational force exerted on one sphere by the other three.
A 65 gram sample of copper was heated to 128.5 degrees Celsius then placed into 150 gram of water at 19.8 degrees Celsius. Calculate the final temperature of the mixture and the heat transferred fr
The ball remains in contact with the kicker's foot for 0.050 s, during which time it experiences an acceleration of 390 m/s2. The ball is launched at an angle of 54° above the ground. Determine