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Balancing Chemical Equations

Q. Potassium forms an oxide containing 1 oxygen atom for every 2 atoms of potassium. What is the coefficient of oxygen in the balanced equation for the reaction of potassium with oxygen to form this oxygen? A. 4 B. 0 C. 3 D. 1 E. 2

Solved • Mar 3, 2020

Balancing Chemical Equations

Q. In the balanced equation for the reaction: XP4O6(s) + yH2O(l) → zH3PO3(aq) if x equals 2, the coefficient z equals: A. 2 B. 4 C. 6 D. 10 E. none of these

Solved • Mar 2, 2020

Balancing Chemical Equations

Q. Balance the following equation; C8H18(l) + O2(g) → H2O(g) + CO2(g)

Solved • Mar 2, 2020

Balancing Chemical Equations

Q. In balancing an equation, we change the _____ to make the number of atoms on each side of the equation balance. A. formulas of compounds in the reactants B. coefficients of compounds C. formulas of compounds in the products D. subscripts of compounds E. none of these

Solved • Mar 2, 2020

Balancing Chemical Equations

Q. When solid lead(II) sulfide reacts with oxygen gas, the products are solid lead(II) oxide and sulfur dioxide gas.

Solved • Feb 28, 2020

Balancing Chemical Equations

Q. The balanced chemical equation for the reaction between carbon dioxide and potassium hydroxide is: CO2(g) + 2KOH(aq) → K2CO3(aq) + H2O(l) We can interpret this to mean: 1 mole of carbon dioxide and ____ mole(s) of potassium hydroxide. React to produce: ____ moles(s) of potassium carbonate and ____ mole(s) of water

Solved • Feb 21, 2020

Balancing Chemical Equations

Q. When the following molecular equation is balanced using the smallest possible integer coefficients, the values of these coefficients are: __ bromine trifluoride (g) → __ bromine (g) + __fluorine (g)

Solved • Feb 21, 2020