Cu+HNO3->Cu(NO3)2+NO+H2O
Cu+4HNO3->Cu3(2NO3)2+2H2O
When iron metal reacts with oxygen, the reaction can form Fe2O3. Write a balanced chemical equation for this reaction.
4Fe+302->2Fe2O3
The element ? is always present in a combustion reaction.
oxygen
Measuring how quickly a reaction disappears is one way to measure the ? of the reaction.
rate
Single-replacement reactions can take place with nonmetals. In the following equation, assume that A and C are nonmetals and B is a metal. Complete the following general equation for the replacement of a nonmetal in a compound by another nonmetal: A+BC->
C+BA
The statement that in chemical reactions, the total mass of the products is the law of ?
mass
In a double-replacment reaction, there are two reactions and ? products.
two
A ? is the number that appears before a formula in a chemical equation.
coefficients
In terms of energy, the general chemical equation AB+CB energy -> AD+CB represents a ? reaction.
endothermic
During a chemical reaction, energy is released during the ? of chemical bonds.
formation
For a certain chemical reaction, the reactants contain 390 kJ of chemical energy, and the products contain 362 kJ of chemical energy. In order for energy to be conserved, 28 kJ energy must be ?.
released
Write a chemical equation that accurately represents what happens when suffer and react to form sulfur trioxide.
2s+302+2SO3
For the chemical reaction C2H6+
...