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The density of an unknown substance was determined by adding a weighed piece to a graduated cylinder containing 37.3 mL of water. After the substance was submerged the water level was measured at 46.2 mL. The substance weighed 100.0 g. What was its density?
How many moles of H+ ions are present in 1.9 L of 0.48 M hydrobromic acid.
Write a complete ionic equation and if there is a phase change you need to then write a net ionic equation and list the spectator ions sodium nitrate plus strontium chlorate equals sodium chlorate plus strontium nitrate
Considering the reaction: SO2Cl2(g) --> SO2(g) +Cl2(g) Kp=2.91 and temp = 298k. the partial pressure of SO2 is 137 torr and the partial pressure of Cl2 IS 285 torr. What is partial pressure of SO2Cl2?
Iron (III) oxide may be reduced to pure iron either with carbon monoxide or with coke (pure carbon). Suppose that 150kg of ferric oxide are available
N2+O2->2NO At 2000 degress C, Kc for the reaction is 4.1*10^-4 and delta H= 180.6Kj. What is the value of Kc at 65 degrees C
What is the molecular formula?
Is the solubility of a cation predictable from the position of its element in the Periodic Table? Is precipitate color predictable from the position of the cations element in the Periodic Table?
At what temperature will air (MW=29) have the same density as helium at 300 K, both gases at the same pressure.
If 25.00 mL of 0.687 M Fe(NO3)2 are added to a flask containing 0.289 g of aluminum metal, what compounds will be present in the flask once the reaction is complete? (Ignore water, etc.)
What would you expect the measured decay rate to be 4.00 hours later? The half-life of Ru-97 is 2.79 days.
If 2.61 g of methane gas (CH4) is introduced into an evacuated 1.67 L container at 15°C, what is the pressure in the container?
When 10.0 mL of 0.10 M NaCl is added to the beaker containing the AgNO3, the new cell voltage is 0.051 V. Calculate the experimental value of Ksp for AgCl.
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