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In the year 2012, an estimated amount of 31.6 billion metric tons (1 metric ton = 1000 kg) of carbon dioxide (CO2) was emitted worldwide due to fossil fuel combustion and cement production. Express this mass of CO2 in grams without exponential notation, using an appropriate metric prefix.
Express your answer to three significant figures and include the appropriate units.
Explain which element is the central atom, define how many bonds does the central atom form, is it polar or non-polar, explain what the direction of negativity is
The reaction of 2.5g of Al with 2.5g oxygen (actually) produces 3.5g of Al oxide. Calculate the % yield of aluminium oxide.
In 0.1592 M solution, a weak acid, HA, is 7.11% ionized. Calculate the ionization constant for the weak acid.
Explain how much 3M NaOH MW=40 can be made from 10.0ml of a 10M solution
What mass of NaOH could this buffer neutralize before the pH rises above 4?
Ammonia gas and hydrochloric acid vapor undergo a reaction to produce solid ammonium chloride. The reaction equation is given below together with relevant thermodynamic data at 298K
calculate the detection limit of this reaction for each halide, the value below which there will be no observed reaction.
What is the percent purity of NaHCO3 in your baking soda? (The formula weight of NaHCO3 is 84.007 g/mole).
calculate the molar mass of vitamin c where a solution contains 55.0 g of vitamin c dissolved 25.0 g of water. the
Ethanol is a common laboratory solvent and has a density of 0.789 g/mL
How many liters of gaseous hydrogen bromide at 97 degrees c and 0.953 atm will a chemist need if she wishes to prepare 3.50 L of 1.20 M hydrobromic acid
25.0mL of a 0.100M solution of NH3 is titrated with 0.150M HCl. After 10.0mL of the HCl has been added, the resultant solution is: a) basic and before the equivalence point
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