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Question- What mass of Na2CO3 is required to produce 250.0 mL of a solution that is 500 ppm in Na+? Assume a solution density of 1.00 g/mL).
I need proficient help to solve the above problem
Calculate the dryness fraction of the steam between the separator and the throttle, and hence the dryness fraction of the steam being bled from the system.
An electron makes a transition from n = 8 to n = 3. What is the energy associated with this transition
A student attempted to identify an unknown compound by the method used in this experiment. she found that when she heated a sample weighing 0.4826 g, the mass barely changed, dropping to 0.4855 g.
Measurements of strontium in enamel from extracted wisdom teeth were done by atomic absorption spectroscopy. Solutions were prepared with a constant total volume
The rate constant for a certain reaction is k = 2.60×10-3 s-1 . If the initial reactant concentration was 0.200M , what will the concentration be after 14.0 minutes?
can someone write out and solve the Huckel MO approximation for the treatment of the pi electrons in ethane
a solution of ethanol c2h5oh in water is prepared by dissolving 77.0 ml of ethanol density 0.79 gcm3 in enough water
For the reaction shown, calculate how many grams of each product form when the following amounts of reactant completely react to form products. Assume that there is more than enough of the other reactant.
Write a balanced net ionic equation and describe one of the ways for which Cd2+ will interfere with the determination of copper.
could 131 g of xe gas in a vessel of 1.00 dm3 exert a pressure of 20.0 atm at 25 c if it behaved as a perfect gas? if
How much Cu will be deposited by the passage of 2.35A in a solution of 0.20 M CuSO4 for half an hour. Cu2+ +2e---------Cu(s)
Ruthenium red can be used as a tissue stain for microscopy. It contains 38.56% ruthenium by mass. If each molecule of ruthenium red contains 3 ruthenium atoms, what is the molar mass of ruthenium red
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