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3 years ago

12

Which statement best describes a battery?

2 answers:

blsea [12.9K]3 years ago

5 0

Answer:

The correct answer is option A.

Explanation:

Batteries are connected group of electrochemical cells that stores electrical charges and generate electric current due to conversion of chemical energy into electrical energy.

These electrochemical cells are arranged in a same orientation so as to keep the polarities of the cells in same direction which will provide ease in movement of electrical charges. Preferably these electrochemical cells are identical.

ladessa [460]3 years ago

3 0

Im not 100% but i think b

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Propane gas reacts with oxygen according to this balanced equation: C subscript 3 H subscript 8 space (g )space plus space 5 spa

Misha Larkins [42]

Explanation:

The balanced chemical equation of the reaction is:

$C_3H_8(g)+ 5O_2 (g)->3CO_2(g)+4H_2O(g)$

From the balanced chemical equation,

1 mole of propane forms ------ 3 mol. of $CO_2$ gas.

The molar mass of propane is 44.1 g/mol.

One mole of any gas at STP occupies --- 22.4 L.

Hence, 44 g of propane forms (3x22.4 L=) 67.2 L of CO2 gas at STP.

Answer:

Thus, 67.2 L of CO2 is formed at STP.

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Naya [18.7K]

Answer:

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timofeeve [1]

Answer:

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Explanation:

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3 years ago

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Free_Kalibri [48]

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3 years ago