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calculate the mass of oxygen needed to react 10.0g of calcium to form calcium oxide
If we have captured 1 ton of CO2 from the air and now we have to verify that the captured gas is CO2 only, so which tools will be required to verify it is CO2??
'Rubisco enzyme is dependent on light and therefore absorbs CO2 during daytime, but at night when light is not available it releases the CO2. And therefore its said that trees release CO2 at night.'
Is the above sentence true??
How does a positron differ from an electron?
An antacid tablet containing 1.25 g NaHCO3 is dissolved in water and the total volume of solution is
500.0 mL. Calculate the molarity of this NaHCO3 solution.
500.0 mL. Calculate the molarity of this NaHCO3 solution.
Ethyl acetate (CH3CO2C2H5) is used to decaffeinate coffee beans and tea leaves. A solution is prepared by
reacting 10.00 mL of ethanol (C2H5OH) with 10.00 mL of acetic acid (CH3COOH). The densities of acetic
acid and ethanol are 1.0492 g/mL and 0.7893 g/mL, respectively. The equation for the reaction is shown
below:
C2H5OH(l) + CH3COOH(l) → CH3COOC2H5(l) + H2O(l)
(a) Determine the limiting and excess reactant.
(b) Determine the volume (in mL) of the excess reactant when the reaction ends.
reacting 10.00 mL of ethanol (C2H5OH) with 10.00 mL of acetic acid (CH3COOH). The densities of acetic
acid and ethanol are 1.0492 g/mL and 0.7893 g/mL, respectively. The equation for the reaction is shown
below:
C2H5OH(l) + CH3COOH(l) → CH3COOC2H5(l) + H2O(l)
(a) Determine the limiting and excess reactant.
(b) Determine the volume (in mL) of the excess reactant when the reaction ends.
Why is potassium combined with chloride for a potassium medication?
how much energy must be absorbed by 20.0g of water to increase tempature from 283.0
to 303.0
A hazardous-waste disposal site is believed to be leaking contaminants into the local groundwater.
A new visual indicator is needed for an acid–base titration.
