Which of these substances is a compound? a. air b. salt water c. gasoline d. salt e. lemonade Which of the following is not a pure substance? \\ A. sparkling water B. gold metal C. oxygen gas D. water vapor E. dry ice
A major component of gasoline is octane C_8H_{18}. When octane is burned in air, it chemically reacts with oxygen gas O_2 to produce carbon dioxide CO_2 and water H_2O. What mass of carbon dioxide is produced by the reaction of 2.2 g of octane?Round yo...
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Which of the following is an example of a homogeneous mixture? a) sand mixed with oil b) gasoline mixed with water c) salt dissolved in water d) table sugar nails in a box Classify each of the following as a pure substance or a mixture. If it...
Which of the following is not a pure substance? \ A. sparkling water B. gold metal C. oxygen gas D. water vapor E. dry iceWhich of these substances is a compound? a. air b. salt water c. gasoline d. salt e. lemonadeWhich o...
A homogenous mixture is a mixture that is uniform in composition. On the other hand, a heterogeneous mixture is one that is not uniform in composition. Answer and Explanation: The correct choice is option e). A sheet of aluminum is a pure substance a...
Is copper a pure substance, a homogeneous mixture, or a heterogeneous mixture? Explain. Classify each of the following as a pure substance or a mixture. If it is a mixture, indicate whether it is homogeneous or heterogeneous. a. rice puddi...
gasoline Classify the following mixtures as homogeneous (H) or heterogeneous (HT): a. lemon juice (no pulp) b. tap water c. blood d. house paint Which one of these is a pure substance ___ ? a. Tea b. Sugar water c. A casserole d. Pomegranate juice ...
What would you do to cause this substance to change from liquid to the solid phase without changing the temperature? What does sublimation mean? Which of the following changes are chemical changes? a. Water is frozen. b. Water is boiled. c. Gasoline is burned...
A cube of ice, 28 cm on each side, is melted into a measuring cup. What is the volume of the liquid water? What volume of water has the same mass as 0.90 L of gasoline? (Express your answer to two significant figures and include the appropriate units.) ...