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calculate the concentration of nitrate ion in a solution of 0.10 m barium nitrate solution following the electroneutrality principle
calculate the concentration of nitrate ion in a solution of 0.10 m barium nitrate solution following the electroneutrality principle

Pure aluminum metal reacts with hydrochloric acid to produce aluminum chloride and hydrogen.

a. write the balanced chemichal equation for the reactio described above



Potassium has two naturally occurring isotopes: k-39 ( 93.12%; mass= 38.9637 amu), and k-41 ( 6.88%; 40.9618 amu). Calculate the atomic weight for potassium.
12.0 g of carbon atoms, each of mass 12.0 amu. How many atoms?
What is the mass in grams of 150 x 10^12 iron atoms, each having a mass of 56 amu?
What is the mass in atomic mass units of a nitrogen atom weighing 2.33 x 10^-23 g?

(5+x)g of Hydrogen, Ymol. Of Neon, Pmol. Of Argon and 20g of Helium were mixed together and the total pressure Exerted by the mixture was found to be 800mmHg. Given that the partial pressure of Hydogen, Helium, Argon and Ne are ZmmHg, 1000mmHg, QmmHg and 2400mmHg respectively, determine the value of Y, P, Z and Q


Calculate the mass (in grams) of 10 trillion silver atoms


What is the final temperature of 100g of ice at -15
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