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Calculate the theoretical yield of CaCO3 if 25 mL of a solution of 25% wt/v CaCl2 is reacted with an excess of 1 molar K2CO3.
CaCl + K2CO3 --> CaCo3 + KCl
If 4.10 g of CaCO are actually produced, determine the percentage error.
Molar Mass of Sulfur based on molality, What would the molar mass of sulfur be based on the following data and information?
The addition of H2 to C=C double bonds is an important reaction used in the presentation of margarine from vegetable oils. If 50.0ml of H2 and 50.0ml of ethylene (C2H4) are allowed to react at 1.5atm, the product ethane (C2H6) has a volume of 50.0..
The mass of the Earth's Moon is 7.35 x 10^22 kg. what is the mass expressed in megagrams , Mg?
an unknown gas sample was dissolved in water at 25degc producing a solution with a concentration of 4.7 x 10-4 m at 522
Give some examples of how a web browser can be configured to protect against some of the threats listed in this weeks chapters. Make sure your examples are clear and what can be changed in the browser.
Give the balanced equation for the reaction- exothermic formation of 1 mol of sodium chloride from its elements
Suppose a gaseous mixture of O2 and Kr has a density of 1.104 g/L at 335 torr and 400K. Define what is the mole percent O2 in the mixture
Write a balanced equation for the double-replacement precipitation reaction described, using the smallest possible integer coefficients. [silver nitrate and cobalt(II) iodide]
The atomic mass of element X is 29.42 amu. A 33.22 g sample of X combines with 92.10 g of another element, Y to form a compound XY, Calculate the atomic mass of Y.
Why does the same amount of liquid when left in a wider and flatter container evaporate quicker than when left in a narrower and deeper container?
What descriptive words would best portray the tone
The standard free energy (?G0') for the hydrolysis of ATP is -30 kJ/mol. The free energy for the hydrolysis of ATP in the cell (?G) is -50 kJ/mol. Which number is closest to the ratio of [ADP][Pi]/[ATP] found in the cell? R=8.314 J/mol*K T=310K An..
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