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A metal sample weighing 40.0 g and at a temperature of 99.1 C was placed in 38.6 g of water in a calorimeter at 25.0 C. The calorimeter reached a maximum temperature of 32.8 C.
a. How much heat flowed into the water?b. Calculate the specific heat capacity of the meal.c. What is the approximate molar mass of the metal?
If solar radiation is 1200 W/m^2, how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 nm for solar radiation.
Calculate the concentrations of each of the ions in 0.12 M (NH4)2HPO4. a) [NH4+], M b) [HPO42-], M
Using the information below, calculate the mass of benzene in each phase and find the total mass of benzene at the site.
what is the PKa for the acid HA if a solution of 0.65 m and 0.85 M NaA has a PH 4.75
determine the pressure in a 125-L tank containing 56.2 kg of oxygen gas at 21.0 oC
An aerosol can has a gas pressure of 144 kPa at 293 K. Calculate the pressure when the can is heated to 425 K.
The volume of a gas at 95.0 kPa is 300.0 mL. If the pressure is increased to 177 kPa, what will be the new volume?
a 130g piece of metal is heated to 286C and dropped into 87.0g of water at 26C, if the final temperature of the water is 58.3C.
Why is water a reactant in the fermentationof sucrose? Enter the solubility-product expression
Draw the molecule by placing atoms on the grid and connecting them with bonds. Include lone pairs of electrons and hydrogen atoms.
The value of Ka for monochloroacetic acid is 1.35 multiplied by 10-3. Calculate the pH of a 0.24 M solution of monochloroacetic acid.
what is the sum of ALL the coefficients in the equation?
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