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20 solutions

Balancing Chemical Equations

Q. A 0.744 g sample of a mixture containing BaCl2.2H20 (MM=244) and KCl is heated up to 150 Celsius to obtain a constant mass of 0.708g. What is the mass of KCl present in the mixture? 1.)0.500g 2).0.425g 3.)0.300g 4.)0.250g 5.)0.150g Give the answer with each and every step and theory parts.

Solved • Aug 17, 2019

Balancing Chemical Equations

Q. Solid silicon dioxide with hydrofluoric acid to yield gaseous silicon tetrafluoride and liquid water in balance molecular equation

Solved • Aug 12, 2019

Balancing Chemical Equations

Q. Aluminum reacts with hydrobromic acid to produce aluminum bromide and hydrogen gas. The reaction may be represented by the following unbalanced chemical equation: 2 Al(s) + 6 HBr(aq) -> 2 AlBr3(aq) + x H2(g). What minimum value of the coefficient x would balance the equation?

Solved • Jul 11, 2019

Balancing Chemical Equations

Q. When aqueous solution of aluminum nitrate (Al(NO3)3) and potassium phosphate (K3PO4) are mixed, the products are solid aluminum phosphate and aqueous potassium nitrate. Write the balanced chemical equation for this reaction. (Include sates-of-matter under the given conditions in your answer. Use the lowest possible whole number coefficients.)

Solved • Jul 12, 2019

Balancing Chemical Equations

Q. How many molecules of heptane, C7H16, are represented by the balanced chemical equation shown below? C7H16 + 11O2 -> 7 CO2 + 8 H2O The number of molecules of heptane, C7H16, represented is ___

Solved • Jul 12, 2019

Balancing Chemical Equations

Q. (a) When lithium hydrogen carbonate, LiHCO3(s), decomposes upon heating, lithium carbonate, Li2CO3(s), is formed along with two other gaseous products. Write a balanced equation showing this decomposition reaction. (Include states-of-matter under the given conditions in your answer.) (b) When zinc(II) nitrate, Zn(NO3)2(s), decomposes, it forms zinc(II) oxide, ZnO(s), along with nitrogen dioxide, NO2, and oxygen, O2, gases. Write a balanced equation showing this decomposition reaction. (Include states-of-matter under the given conditions in your answer.)

Solved • Jul 12, 2019

Balancing Chemical Equations

Q. (a) Specify the product a combination reaction between magnesium metal, Mg(s), and gaseous chlorine, Cl2(g). (Omit states-of-matter form your answer.) Write a balanced equation for this reaction. (Include states-of-matter under the given conditions in your answer.) (b) When nitrogen, N2(g), combines with potassium metal, K(s), potassium nitride, K3N(s), is formed. Write a balanced chemical equation for this reaction. (Include states-of-matter under the given conditions in your answer.)

Solved • Jul 11, 2019