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A 0.21L sample of hydrogen gas is collected over water. The reaction that allowed the gas to be liberated was between Mg ribbon and 3M HCl. If the starting conditions were at STP with 0.58g of Mg and 10 mL of the HCl: Identify the limiting and excess reactions and how many grams of the excess will be unused.
An industrial vat contains 2,500 liters of an acidic aqueous solution with a pH of 3.5. How many grams of NaOH need to be added to raise the pH to 4.3?
How many moles of MgCl2 are present in 50.0 mL of 0.800 M MgCl2 solution?
how many square meters of floor space are there in a room which has 225.0 square yard of floor space 1 m=39.37 in, 1 yard =36 in.
Calculate the energy (joules) required to achieve the transition from the ground state to the first excited state for this system.
Nitric acid is a strong acid, but nitrous acid is a weak acid. Why? A. there are more electronegative oxygen atoms bonded to the N atom
what is the fundamental mechanism by which enzymes enhance the rate of chemical reactions?
4 C3H5O9N3(l) → 12 CO2(g) + 6 N2(g) + O2(g) + 10 H2O(g) If a sample containing 2.01 mL of nitroglycerine (density = 1.592 g/mL) is detonated, how many total moles of gas are produced?
If the enthalpy change for the reaction is 20 kJ/mol and the entropy change is 50 J/mol/K, the conversion of reactants to products is spontaneous above 400 K.
considering the given chemical reaction as nh3g cl2g rarr nh2clg hclg compute the deltah for this reaction and
The specific heat of liquid bromine is 0.226J/g-K. How much heat (J) is required to raise the temperature of 10.0mL of brmine from 25.00D to 27.30C? The density of liquid bromine: 3.12g/mL
What mass of water, in grams, produces 729 J when cooled from 58.0 degrees Celsius to 28.0 degrees Celsius? The specific heat capacity of water is 4.184 J/g.°C.
a 0.17 mole sample of a gas is put into a balloon when the temperature is 26 degrees celsius and the pressure is 757
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