Physics, 29.08.2019 18:20 jacqueline398
Which of the following are physical rather than chemical properties of hydrogen gas (h2)? choose one or more:
a. liquefied h2 boils at a very low temperature (–253.7°c).
b. h2 gas does not conduct electricity.
c. at room temperature, its density is less than that of any other gas.
d. it reacts vigorously with oxygen (o2) to form water.
Answers: 3
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The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.
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Abus travels 280km south along a straight path with an average velocity of 88km/h to the south. the bus stops for 24 min, then it travels 210 km south with an average velocity of 75 km/h to the south. how long does the total trip last?
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Which of the following are physical rather than chemical properties of hydrogen gas (h2)? choose on...
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