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Covers the nature and composition of matter, solutions, chemical reactions, equilibria, thermodynamics, and electrochemistry with engineering applications.
Copper, Cu, has two stable isotopes, 63Cu with atomic mass of 62.9 amu and 65Cu with atomic mass of 64.93 amu. The average atomic mass of Cu is 63.54. What are the percent abundances of the two isotopes?
One mole of N2 contains 2*6.022 x 1023 molecules.
In reference to item 13, suppose synthesis of Al2O3 is done in the lab using 20.50 g of Al and excess of O2. Upon purification, 30.33 grams of Al2O3 is produced. What is the percent yield of Al2O3?
Elements are arranged in the periodic table in order of increasing atomic number.
Dalton's law of partial pressure states that constant temperature and volume, the total pressure of a gas is ____________ proportional to the number of moles of gas present.
Using the periodic table, which element is in Group 2A period 5?
Which gas law states that at at constant temperature and pressure, volume of gas is directly proportional to the number of moles of gas present.
The number of electrons and protons are equal in number.
What is the name of the compound that has 2 sulfur and 10 fluorine?
How many significant figures are in 0.000187?
The difference between the mass number and the atomic number equals the number of ________________ in an atom.
Which of the following increases as work increases?
AB4+2C2->AC2+2B2C. If 100 grams of AB4 reacts with excess of C2, it will produce 100 grams of AC2.
Suppose 20.50 g of Al reacts with excess O2, how many grams of Al2O3 is produced? (Molar Mass of Al2O3 is 101.96 g/mol)
The -ium ending on the name of hydronium indicates that it is a cation from metal atoms.
How many significant figures are in 4.0300 x 103 g?
Compute the area given the following measurements: 3.7552 cm and 1.7 cm. Express the answer in significant figures.
What is defined as the amount of heat needed to raise the temperature of 1gram of the substance by 1K or 1C?
Pressure is defined as the effect of a force applied to a surface and can be measured by means of a barometer or manometer.
If 2 moles of AB4were made to react with 2 moles of C2, 1 moles of AC2 will be produced.
How many grams of Carbon are in 600 grams of Resveratrol?
In a balanced chemical equation, the number of atoms of an element on the left side is always equal to the number of atoms on the right side.
One mole of Phosphorus, with atomic mass of 30.97 amu, has greater number of atoms than one mole of Boron, with atomic mass of 10.81 amu.
Which ion is not correctly named?
How many significant figures are in 0.0054
What is defined as the described as the sum of the internal energy and product of pressure and volume in a system?
As the mass or speed increases, kinetic energy decreases.
Kinetic energy is expressed as:
Ideal Gas Law is expressed as PV=nRT.
Which of the following is the correct formula of sulfurous acid?
Which of the following statement is not correct?
Which gas law states that at a constant temperature, the volume of a fixed amount of gas is inversely proportional to its pressure?
What is the mass percent of Hydrogen, H, in resveratrol?
______________ are elements located in rows, while ________ are elements located in columns
___________________ is a combination of Boyle's, Charle's and Avogadro's laws.
What is the name of the compound that has 2 nitrogen and 4 oxygen?
Which of the following statement is true regarding Ideal Gas Law?
Which of the following statement is not true according to Dalton's atomic theory ?
Which of the following statement is true regarding Gas Laws?
A percent yield of 100% is impossible to attain in the laboratory.
Gases take up volume and shape of its container, are considered the least compressible state of matter and have the lowest density compared to solids and liquids.
The internal energy of a system increases when heat is applied of work is done into it.
Higher temperature in gas means higher ____________.
How many significant figures are in 0.00002?
Which of the following statement is true regarding matter?
Suppose synthesis of Al2O3 is done in the lab using 20.50 g of Al and excess of O2. Upon purification, 35.48 grams of Al2O3 is produced. What is the percent yield of Al2O3?
Which of the following statement is not true regarding kinetic molecular theory?
Iron, Fe, has an atomic mass of 55.85 amu therefore, the molar mass of Fe is 55.85 g/mol.
Dalton's law of partial pressure states that constant _____________ and volume, the total pressure of a gas is directly proportional to the number of moles of gas present.
Which of the following statement is true regarding balancing chemical equations?
How many moles of Al is needed to produce 4 moles of Al2O3
Accuracy is a measure of how closely individual measurements are to the actual or true value, while precision refers as to how closely individual measurements are to one another.
Charle's Law states that at a constant pressure, the volume of a fixed amount of gas is inversely proportional to its absolute temperature
The empirical formula of an unknown compound was determined to be CH2O. A separate analysis to determine the molar mass was done. Results show that the molar mass is 360.36 g/mol. What is the molecular formula of the unknown compound?
Atomic number plus the number of neutrons is referred to as:
Aluminum oxide, Al2O3, is synthesized by the reaction of aluminum, Al, and oxygen gas, O2. Which of the following equations correctly represent the reaction?
How many atoms of oxygen are in 1 mole of Resveratrol?
Molar heat capacity is the amount of heat needed to raise the temperature of 1 mole of a substance by 1K or one degree celsius.
Elements can be decomposed into smaller substances.
As long as we use stoichiometric amounts of reactants in a reaction carried out in the laboratory, we are guaranteed to get the theoretical yield of the reaction.
Convert 35.6 degrees Celsius to Fahrenheit
Partial pressure is defined as the amount of pressure exerted by each component gas in a mixture, which is independent of the pressure exerted by the other gases.
What is the mass number of an atom that has 2 protons, 2 electrons and 4 neutrons?
Which of the following is true regarding specific heat?
How many significant figures are in 5.070 x 103 g?
Given the percent composition by mass of all the elements in an unknown compound, we can always determine its molecular formula.
Positive ΔH means that heat is lost from the system into its surroundings, while negative enthalpy ΔH means that heat is absorbed by the system from its surroundings
Which of the following statement is true regarding atoms?
Which gas law states that at constant pressure, the volume of a fixed amount of gas is directly proportional to its absolute temperature?
Which of the following statement is correct?
Resveratrol, C14H12O3 is a compound usually found in grapes and some berries. The molar mass of this compound is 228.26 g/mol. How many moles of resveratrol are in 600 grams of sample?
The percent composition by mass of ferrous sulfide, FeS, is 50% Fe and 50% S.
Using the periodic table, which element is in Group 4A period 6?
Which of the following can increase the pressure of a gas?
Which of the following statement is true regarding the periodic table?
What is an example of endothermic process?
According to the kinetic molecular theory, average kinetic energy of gas molecules is proportional to absolute temperature. At any given temperature, gas molecules have exactly similar average kinetic energy.
What is the mass number of an atom that has 5 protons, 5 electrons and 6 neutrons?
Which of the following statement is true regarding Dalton's atomic theory?
Compute the area given the following measurements: 2.0546 cm and 4.3 cm. Express the answer in significant figures.
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