Convert each temperature. a. 212 °F to °C (temperature of boiling water at sea level) b. 22 °C to K (approximate room temperature) c. 0.00 K to °F (coldest temperature possible, also known as absolute zero) d. 2.735 K to °C (average temperature of the universe as measured from background black body radiation)
Ch.1 - Matter, Measurement & Problem Solving
Chapter 1, Problem 4
Complete the table. Substance pure or mixture type water pure compound coffee _______ _______ ice _______ _______ carbon _______ _______
Verified step by step guidance
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Identify the nature of each substance: Determine if each substance is a pure substance or a mixture.
Classify pure substances: Pure substances can be elements or compounds. Elements consist of only one type of atom, while compounds consist of two or more types of atoms chemically bonded together.
Classify mixtures: Mixtures can be homogeneous or heterogeneous. Homogeneous mixtures have a uniform composition throughout, while heterogeneous mixtures have a non-uniform composition.
Apply classification to each substance: For example, water is a pure compound because it consists of H2O molecules. Ice is also a pure compound because it is the solid form of water.
Determine the type for coffee and carbon: Coffee is a mixture, typically a homogeneous mixture, because it consists of various compounds dissolved in water. Carbon, in its pure form, is an element because it consists of only carbon atoms.
Related Practice
Textbook Question
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Textbook Question
Use the prefix multipliers to express each measurement without exponents. c. 1.5 * 109 g
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Textbook Question
Express the quantity 254,998 m in each unit. a. km b. Mm c. mm d. cm
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Open Question
Indicate the number of significant figures in each number. If the number is an exact number, indicate an unlimited number of significant figures. a. 318,857,056 (2014 U.S. population) b. 2.54 cm = 1 in. c. 11.4 g/cm³ (density of lead) d. 12 = 1 dozen.
Open Question
Calculate the density of a liquid in g/mL to the correct number of significant digits, if a flask containing 9.55 mL of the liquid weighs 157.2 g with the liquid and 148.4 g when empty.
Textbook Question
Classify each statement as an observation, a law, or a theory. a. All matter is made of tiny, indestructible particles called atoms. b. When iron rusts in a closed container, the mass of the container and its contents does not change. c. In chemical reactions, matter is neither created nor destroyed. d. When a match burns, heat is released
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