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The mass of a glass beaker is known to be 25.1 g. Approximately 5 mLof water are added, and the mass of the beaker and water is measured on an analytical balance to be 30.625 g . How many significant figures are there in the mass of the water?
Calculate the solubility of silver chloride in 10.0 M ammonia given the following information:
From the composition of lignite coal, calculate the mass of sulfuric acid that could potentially form as acid rain from burning
If an unknown crystalline organic compound has a heat of melting that is 8.605 kJ/mole and a melting point of 250.6 C
When energy is supplied at the steady rate of 10.8 W to a heater at the center, a temperature difference of 50°C is set up between the spheres. Find the thermal conductivity of charcoal.
A mixture of gases containing 0.40 mol of SO2 and 0.20 mol of O2 in a 4.0L flask reacts to form SO3. If the temperature is 25oC, what is the pressure in the flask after the reaction is complete
Explain possible reason for discrepency between the actual pH of the buffer and the reported pKa of the weak acid. (My case: actual pH =9.23, reported pKa =9.25)
you found the amount of product (1.40 mol P2O5) formed from the given amount of oxygen and excess phosphorus. Now, determine how much P2O5 is produced from the given amounts of phosphorus and oxygen.
The wedge is connected to a pendulum and swings through an arc and hits the sample at the bottom of the arc. The sample breaks and the wedge continues its swing to a height of 0.5 m. The energy required to break the sample is closest to
An ideal gas is allowed to expand at constant temperature from a volume of 1.00 L to 5.00 L against a constant external pressure of 2.00 atm. What is the value of w, the work done on the gas
Water has seeped through the pore spaces in the glass cup. 4. The relative humidity of the air near the glass cup is approaching 0 percent. 5. The dew point temperature was not reached.
Problem- How many moles of H+ or OH- ions are there in 3 moles of H2SO4? In 0.2 mole of NaOH? In 1 mole of H3PO4 assume H3PO4 has 3 H+ ions per molecule
How many grams of Cuso4 are needed to prepare a .150 molal solution in 300 grams of water?
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