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CaH2(s) + 2 H2O(l) -> Ca(OH)2(aq) + 2 H2
How many grams of CaH2 are needed to generate 53.5 L of H2 gas if the pressure of H2 is 1 atm at 194 C.
what is the molecular formula and empirical formula of NH2Cl, molar mass = 51.5 g/mol
in the reaction P4+5O2->2P2O5, how many moles of oxygen are consumed each time 0.500 mole of P2O5 is formed?
Which of the following molecules are polar? (There may be more than one; choose ALL the polar molecules for full credit)
Mg +2HCl-> MgCl2 + H2 what volume of Hydrogen at STP is produced from the reaction of 50.0g and the equivalent of 75 g of HCl? Also, How much of the excess reagent is left over?
The density of aluminum is 2.70 g/cm3 and the density of chromium is 7.19 g/cm'.If equal masses of aluminum and chromium are transferred to equal volumes of water in separate graduated cylinders.
I am trying to understand the effects of leachate from landfills and its effects on groundwater, and since I am in environmental health- its effects on the human health.
If the density of water is 1.00g/mL, what is the weight in pounds of gallon of water? you may assume that mass and weight are equivalent at the earth's surface.
Calculate the number of mmoles of primary standard grade Na2CO3. b. How many mmoles of HCl reacted with the Na2CO3? c. Calculate the molarity of the HCl solution.
Explain the hazards associated with 1.0 moles of Ch3COOH solution, 0.10 moles of BaCL2 sloution, and 0.10 moles Na2C2O4 solution?
Calculating concentration in equilibrium, At pH 6.00 and pE 2.60, what is the concentration of Fe2+ (mol/L) in equilibrium with Fe(OH)3?
Determine the boiling point of a solution of 72.4 g of glycerol dissolved in 122.5 g of water.
What mass of NaHCO3 must be added to 1.00 L of 0.10 M Na2CO3 to make a buffer solution whose pH=9.85? pKa2(H2CO3)=10.33
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