Study sets, textbooks, questions
Upgrade to remove ads
Terms in this set (58)
The balanced equation 2Cu(s) + O2(g) 2CuO(s) tells us that 2 mol of Cu
produces 2 mol of CuO
The balanced equation 2Cu(s) + O2(g) 2CuO(s) allows us to know that 1 mol of CuO(s) is produced from
2 mol of Cu
A. True or False - A mole ratio is used to convert the moles of a given starting substance to the moles of a desired substance
According to the law of conservation of mass, mass cannot be gained or destroyed in a chemical reaction. Why can't you simply add the masses of two reactants to determine the total mass of product? Choose the best answer.
One of the reactants could be present in excess and not all be used to make the product(s).
4NH3(g) + 7O2(g) 4NO2(g) + 6H2O(g)How many moles of ammonia will be required to produce 10.0 mol of water?
C6H14 + O2 CO2 + H2OWhen balanced in standard form (smallest whole numbers), the coefficient for CO2 is
C6H14 + O2 CO2 + H2OWhat mass of oxygen (O2) is required to react completely with 25.0 g of C6H14?
Consider the equation: 3A + B ® 2CThe molar mass of A is 40.0 g/mol. Which of the following statements is true when equal masses of A and B are reacted?
If the molar mass of B is less than the molar mass of A, then A must determine how much C is produced.
Consider the equation: 2A + B 5C. If 10.0 g of A reacts with 5.00 g of B, how is the limiting reactant determined? Choose the best answer.
The mass of each reactant must be converted to moles and then compared to the ratios in the balanced chemical equation. So in this case, the limiting reactant cannot be determined without the molar masses of A and B.
For the following reaction: 2H2 + O2 2H2O, which produces the least amount of product?
8 moles of H2 reacts with 2 moles of O2
This is the process of using balanced chemical equations to to determine the relative masss of reactants and products involved in a reaction.
This is the maximum amount of a given product that can be formed when the limiting reactant is completely consumed.
This is the actual yield of a product as a percentage of the theoretical yield.
Consider the reaction: 3NO2(g) + H2O(l) ® 2HNO3(aq) + NO(g)Suppose 2.75 moles of HNO3 were produced from 30.0 g of water and a certain amount of nitrogen dioxide. Which of the following statements is true? Choose the best answer.
Water is not the limiting reactant because more than 2.75 mol HNO3 could be produced from 30.0 g of water.
This refers to the ability to do work or produce heat.
The law of _____________ of mass states that energy can be converted from one form to another but cannot be created or destroyed.
What two factors does kinetic energy depend on?
mass and velocity
A type of energy that is defined due to its positioning or chemical composition is called
Which of the following terms is referred to as "a force acting over a distance." This force is also considered as a force that can make something else physically move.
The result of friction is
This is the flow of energy due to a temperature difference.
Endothermic or exothermic? A candle burns and light is produced.
Endothermic or exothermic? Water freezes to become ice.
Endothermic or exothermic? Water evaporates into steam.
Energy due to motion is called
According to the law of conservation of energy
the energy of the universe is constant
As a ball rolls down a hill, the potential energy _____ and the kinetic energy _____.
Kinetic energy depends on
mass and velocity
Which of the following is a measure of the random motions of the components of a substance?
How many of the following are endothermic processes?
I.activated cold packII.activated warm packIII.boiling water on a hot stoveIV.melting ice cube on a kitchen table
Liquid water turns to ice. Is this process endothermic or exothermic? Choose the best answer.
exothermic; The water released energy, slowing the water molecules down to form solid ice.
The first law of thermodynamics states that
the energy of the universe is constant
The sum of the kinetic and potential energies of all particles in the system is called the
Which of the following equations is correct?
E = q + w
When the system does work on the surroundings the sign of work is
The specific heat capacity of silver is 0.24 J/g °C. How many joules of energy are needed to warm 0.500 g of silver from 25.0°C to 27.5°C?
A gas absorbs 56 kJ of heat and does 31 kJ of work. Calculate E.
Heat is typically measured in
The quantity of heat required to change the temperature of 1 g of a substance by 1°C is defined as
specific heat capacity
Some theorize that heat death of the universe would be brought about because
eventually the entire universe will be the same temperature
Natural gas consists mostly of
Which of the following is a greenhouse gas?
water vapor, methane, carbon dioxide
The measure of disorder or randomness is termed
The distance between two successive peaks or troughs in a wave is called
The _____ indicates the number of waves that pass a given point per second.
The _____ indicates how fast a given peak of a wave moves through space.
A packet of energy of electromagnetic radiation is called
We usually use the term _____ for all forms of electromagnetic radiation.
The form of EMR that has more energy per photon than X-rays is
Which color of visible light has the least amount of energy per photon?
The lowest possible energy state of an atom is called its _____ state.
A given set of p orbitals consists of _____ orbital(s).
Which of the following is an incorrect designation for an atomic orbital?
Sodium has how many electrons in its outermost principal energy level?
The electron configuration for the oxygen atom is
What element has the electron configuration 1s22s22p63s23p6?
What is the energy produced from a sodium vapor lamp that emits photons with a wavelength of 5.89 x 10 m?
3.38 x 10
What is the frequency of microwave radiation that has a wavelength of .01 m?
3.0 x 10 1/s
Sets found in the same folder
Chemistry, The Molecular Nature of Matter and Chan…
Stoichiometry of Formulas and Equations
Three Major Classes of Chemical Reactions
Stoichiometry Unit Test 100%
Other sets by this creator
real chem final
Other Quizlet sets
facs one finals
Final Exam Review
PMP Knowledge Areas - Processes Overview
Form a hypothesis to explain why a sound wave travels faster in a solid than in a gas.
Explain the effect of each of the following stresses on the position of the following equilibrium: $$ 3 NO(g) ↔N2O(g) + NO2(g) $$ The reaction as written is exothermic. (a) N2O(g) is added to the equilibrium mixture without change of volume or temperature. (b) The volume of the equilibrium mixture is reduced at constant temperature. (c) The equilibrium mixture is cooled. (d) Gaseous argon (which does not react) is added to the equilibrium mixture while both the total gas pressure and the temperature are kept constant. (e) Gaseous argon is added to the equilibrium mixture without changing the volume.
A barometer having a cross-sectional area of 1.00 cm2 at sea level measures a pressure of 76.0 cm of mercury. The pressure exerted by this column of mercury is equal to the pressure exerted by all the air on 1 cm2 of Earth’s surface. Given that the density of mercury is 13.6 g/mL and the average radius of Earth is 6371 km, calculate the total mass of Earth’s atmosphere in kilograms.
Write a balanced equation for the reaction of each of the following compounds with water: $RbO_2(s)$