What mass of limestone must have dissolved
what mass of limestone must have dissolved if 3.05x10^10 kg of calcium hydrogen carbonate was produced?
CaCO3(S)+H2CO3(aq)-> Ca(HCO3)2(aq)
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Two immiscible fluids are in contact. Fluid I is denser and is also well mixed. The concentration of species a is cao everywhere within this fluid and the temperature in fluid I is held constant at To.
The heat of fusion of ice (the heat associated with ice melting) is 6.0kJ/mol . Find the temepature of the coffer after the ice melts.
Given a tree T of nodes such that each node contains a number. A set of nodes S is an independent set of T iff no node of S is a parent of another node in S.
What is the volume of the gas in milliliters when the pressure and temperature of the gas sample are changed to 0.950 atm and 70 degrees C?
In what ways were the projectâ??s planning and scope management appropriate? When did the planners begin taking unknowing or unnecessary risk?
A toothpaste contains 0.24 by mass sodium fluoride used to prevent dental caries and 0.30 by mass triclosan. How many moles of are in the tube of toothpaste?
A hollow rectangular masonry pier 600mm*900mm and 150mm thick transmits a vertical load of 500kn in a vertical plane bisecting the 900mm side and at an eccentricity of 100mm from the geometrical axes of the section.
The electron in a hydrogen atom is excited and makes a transition from n=2 to n=7. Calculate the energy of the photon absorbed in joules. Calculate the wavelength of the photon in meters.
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