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An atom (or group of atoms) with an electrical charge is called a(n):
Which of the following correctly describes the oxidation state of the sulfur atom in sulfuric acid (H2SO4)?
Which of the states of matter have a definite volume?
What is the function of the coefficients in a chemical reaction?
What is the union of two amino acids using a peptide bond called?
An experiment is performed to measure the boiling point of water at sea level (actual boiling point is 100°C). The measured values are 104.6°C, 104.5°C, and 104.4°C. What term best describes this data?
What are dispersion forces (also called London dispersion forces or van der Waals forces)?
Lemon juice contains citric acid. Which of the following pH values would lemon juice most likely have?
What is the correct name for the chemical compound MgSO₄?
What are dipole-dipole forces?
A solution contains 120.9132 g of MgO dissolved in 3 L of solution. Given the atomic weights Mg = 24.305 g/mol and O = 15.9994 g/mol, how many moles of MgO are present?
Percent concentration of a solution is expressed as which of the following?
The reaction 2C2H6 + 7O2 → 4CO2 + 6H2O has a ratio of 2 parts ethane (C2H6) to 7 parts oxygen (O2). How many parts of ethane (C2H6) will be needed to react with 21 parts of oxygen?
How could water be made to boil at room temperature?
Nora makes soup by adding some spices to a pot of boiling water and stirring until the spices are completely dissolved. Next, she adds several chopped vegetables. In this mixture, what is the solute?
For a given mass of gas at constant temperature, an inverse relationship exists between the volume and pressure of the gas. This describes which law?
Which of the following represents the general form of a decomposition reaction?
In a redox reaction, the element that is oxidized _____ an electron, and the element that is reduced _____ an electron.
The reaction in which silver nitrate and potassium chloride yield silver chloride and potassium nitrate is an example of which type of chemical reaction?
Which of the following is NOT a product of photosynthesis?