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Describe solids, liquids, and gases in terms of how they fill a container, Use your descriptions to identify the physical state ( at room temperature) of the following: 1.helium in a toy balloon. 2. mercury in a thermometer. 3. soup in a bowl
How long would it take for 1.50mol of water at 100.0 degrees celsius to be converted completely into steam if heat were added at a constant rate of 16.0 J/s. The specific heat of liquid water is 4.18 J/(g*degrees celsius).
Describe the method for checking for completeness of precipitation. Briefly explain why precipitates are usually rinsed with distilled water before they are tested further.
in ploystyrene beaker , we mixed 30 mL of 0.1 M sodium acetate and 15 mL of 0.1 M hydrocloric acid. we measured the PH it was 4.86
a sample of fresh grapefruit juice was filtered and titrated with the above i2 solution. a 100 ml sample of the juice
a 20.0-milliliter sample of .200-molar k2co3 solution is added to 30.0 milliliters of .400-molar bano32 solution.
Calculate the composition and quantity of all phases for a 50 wt % Magnesium - Lead alloy at 435 deg Celsius. Sketch the resulting microstructure, assuming the material was equilibrium cooled from the liquid phase.
when 395.0 g of acetylene burns, how many kilojoules of heat are given off. (c) how many grams of co2 form? (d) how many liters of o2 at 298 k and 15.6 atm are consumed
2 g of a hydrocarbon fuel is burned in a colrimeter that contains 250 grams of water initially at 25 degrees celcius. After the combustion, the temperature is 26.55 degrees celcius.
Calculate the volume in mL of 1,00g of water at each temperature and then calculate the percentage increase in volume that occurs as water is heated from 4.0 degrees Celsius to 60.0 degrees Celsius.
show that cos(ix)= e^-x+e^x/2 and isin(ix)= e^-x-e^x/2 this is expressions are called the hyperbolic cosine and hyperbolic sine, respectively, hint start with e^-x=e^i(ix) and e^x=e^i(-ix) and apply euler's formula
how many moles of hydrogen gas (H2) can be liberated from 104 mol of magnesium hydride if the process operates on 77% efficency?
Write the reaction of the borohydride ion with water using curvy arrows to show electron movement to form one molecule of H2. Draw a complete line structure for the borhydride ion.
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