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notsponge [240]
3 years ago
9

1. Know what elements make up water and in what proportions

Chemistry
1 answer:
larisa86 [58]3 years ago
8 0
1) hydrogen and oxygen make up water, you need 2hydrogens to every oxygen hence H2O.

2) water is polar because the oxygen atom is much more electronegative than the hydrogens pulling the bonded e closer. hence has polar bonds and is an asymmetrical shape so don't cancel each other out and is an over all polar molecule.


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Answer:

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Explanation:

Resistance of each resistor is 100 ohms. When resistors are connected in parallel, the equivalent resistance is lowest. For parallel combination, the equivalent resistance is given by :

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Here, all resistors are 100 ohms. So,

\dfrac{1}{R}=\dfrac{1}{100}+\dfrac{1}{100}+\dfrac{1}{100}+\dfrac{1}{100}\\\\R=25\ \Omega

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