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2 Na(s) + 2 H2O(l) 2 NaOH(aq) + H2(g)
The hydrogen gas generated is collected over water at 25.0°C. The volume of the gas is 535 mL measured at 1.00 atm. Calculate the number of grams of sodium used in the reaction. (Vapor pressure of water at 25°C = 0.0313 atm.)
neon has a volume of 445 mL when it is at a pressure of 719 mmHg. What will be the volume when the pressure is increased to 1122 mmHg
What steps do you think need to be taken to prepare the blood sample so that it will be amenable to this type of analysis?
The rate constant increases by a factor of 2.00 when the temperature is increased from 80 C to 115 C. estimate the arrhenius activation energy.
An aqueous solution is 22.0% by mass silver nitrate, AgNO3, and has a density of 1.22 g/mL. What is the molarity of silver nitrate in the solution?
What volume of carbon dioxide measured at STP will be formed by the reaction of 1.43 mole of oxygen with 0.900 mole of ethyl alcohol?
A block of metal has a width of 3.2 cm, a length of 17.1 cm, and height of 3.5 cm. Its mass is 1.2 kg. Calculate the density of the metal.
For HCB, log Kow = 6.6. What would be the predicted concentration (ppm) of HCB due to bio-concentration in the fat of fish that swim in waters containing 0.000010 ppm of the chemical?
how much energy in kilojoules is required to change 47.6g of ice at 0 degrees C to liquid water at the same temperature? In kilocalories?
does it mean that the solution will shift towards the products because there is excess of reactants? what does it mean when the solution is orange (is it shifting towards products or reactant)?
In the electrolysis of aqueous NaCl, how many liters of Cl2(g) (at STP) are generated by a current of 7.50 A for a period of 100. min.
The specific heat capacity of silver is 0.24 J/°C · g. Calculate the energy required to raise the temperature of 120.0 g Ag from 273 K to 305 K
Assuming an ideal solution, what is the molecular mass of the compound?
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