Physics, 24.03.2021 06:50 BARRION1981
Which of these events indicate that a chemical reaction might have occurred? A. Silver jewelry becomes dark because of tarnish B. Water evaporates from salt water and leaves salt behind C. A liquid bubbles when heated D. A solid appears when two water-based solutions are added together.
Answers: 3
Physics, 22.06.2019 12:00, shrinu
Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter
Answers: 1
Physics, 23.06.2019 08:30, lalkjlkeu9709
Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer. the ice dissolves oxygen from the air, forming a denser crystalline matrix. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds.
Answers: 1
Physics, 23.06.2019 10:00, bernadetteindre6650
The current through a 10 ohm resistor is 1.2 amperes. what is the potential difference across the resistor?
Answers: 1
Which of these events indicate that a chemical reaction might have occurred? A. Silver jewelry becom...
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