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frez [133]
3 years ago
8

A _ is a device that allows a car to use hydrogen gas to operate.

Chemistry
2 answers:
Tema [17]3 years ago
7 0

Answer:

B

Explanation:

i dont rlly know it just seems right yk

larisa [96]3 years ago
3 0

Answer:

the answer is b. fuel cell......

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2 years ago
Calculate the energy required to melt 21 g of ice at 0 oC.
vladimir1956 [14]

<u>We are given:</u>

Mass of ice = 21 grams

The ice is already at 0°c, the temperature at which it melts to form water

Molar heat of fusion of Ice = 6.02 kJ/mol

<u>Finding the energy required:</u>

<u>Number of moles of Ice: </u>

Molar mass of water = 18 g/mol

Number of moles = given mass/ molar mass

Number of moles = 21 / 18 = 7/6 moles

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3 years ago
Which of the following will produce a precipitate?
nekit [7.7K]

Reaction of option c produces precipitate.

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Potassium ion on reacting with sodium sulfide produces potassium sulfide which remain in solution  


8 0
3 years ago
The speed of Train A is 88 km/hr, and the speed of Train B is 96 km/hr. Based on this information, which of the following statem
denis-greek [22]

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Explanation:

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