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문제 85c
If red spheres represent oxygen atoms, blue spheres represent nitrogen atoms, and all the molecules are gases,
c. indicate the type of reaction as combination, decomposition, single replacement, double replacement, or combustion.
문제 86a
If purple spheres represent iodine atoms, white spheres represent hydrogen atoms, and all the molecules are gases,
a. write the formula for each of the reactants and products.
문제 86b
If purple spheres represent iodine atoms, white spheres represent hydrogen atoms, and all the molecules are gases,
b. write a balanced equation for the reaction.
문제 86c
If purple spheres represent iodine atoms, white spheres represent hydrogen atoms, and all the molecules are gases,
c. indicate the type of reaction as combination, decomposition, single replacement, double replacement, or combustion.
문제 97d
Identify the type of reaction for each of the following as combination, decomposition, single replacement, double replacement, or combustion:
d. Zinc replaces copper in Cu(NO3)2.
문제 106a
Propane gas, C3H8, undergoes combustion with oxygen gas to produce carbon dioxide and water gases. Propane has a density of 2.02 g/L at room temperature.
a. Write the balanced chemical equation.
문제 107b
The equation for the formation of silicon tetrachloride from silicon and chlorine is
Si(s) + 2Cl2(g) → SiCl4(g) + 157 kcal
b. Is the energy of the product higher or lower than the energy of the reactants?
문제 111b
Consider the following unbalanced equation:
Al(s) + O2(g) → Al2O3(s)
b. Identify the type of reaction.
문제 114a
Ammonium sulfate, (NH4)2SO4, is used in fertilizers to provide nitrogen for the soil.
a. How many formula units are in 0.200 mole of ammonium sulfate?
문제 114b
Ammonium sulfate, (NH4)2SO4, is used in fertilizers to provide nitrogen for the soil.
b. How many H atoms are in 0.100 mole of ammonium sulfate?
문제 114c
Ammonium sulfate, (NH4)2SO4, is used in fertilizers to provide nitrogen for the soil.
c. How many moles of ammonium sulfate contain 7.4 × 1025 atoms of N?
