Chemistry, 23.04.2020 02:13 myiacoykendall
Which of the following best completes this example of heat transfer by convection? As a pot of water is heated over an open flame, heat is transferred from
a. The pot’s handle to your hand.
b. The flame to the bottom of the pot.
c. The bottom of the water to the top of the water.
d. The hot water to a metal spoon used for stirring
Answers: 1
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Label a-f based on the table using c for concentrated and d for dilute
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Chemistry, 22.06.2019 11:40
Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)
Answers: 1
Chemistry, 22.06.2019 15:00
Which are forms of frozen water? check all that apply. dew frost hail rain sleet
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Chemistry, 22.06.2019 21:30
Describe at least two advantages and two disadvantages of using hydropower as a source of energy.
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Which of the following best completes this example of heat transfer by convection? As a pot of water...
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