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NISA [10]
3 years ago
13

Which substance can not be broken down by chemical means?

Chemistry
1 answer:
marissa [1.9K]3 years ago
8 0
The substance that can not be broken down by chemical means is antimony.
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What force holds together the ions in a salt?
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Arrange the following measurements, in seconds, from the greatest bias to the least bias. 6.63 ± 0.01 s, 6.6 ± 0.1 s, 6.52 ± 0.0
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I understand here "bias" to be the uncertainty of measurements. So the order will be the following:

6.4 ± 0.5 s
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(notice how the second number, the one behind the symbol ± gets smaller, as the bias gets smaller). 



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4 years ago
Help please I'll mark you as a brainliest promise.​
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5 0
3 years ago
At 25 °C, how many dissociated h ions are there in 341 ml of an aqueous solution whose ph is 11. 93?
leonid [27]

0.017×10^{23} dissociated H ions are there in 341 ml of an aqueous solution whose ph is 11. 93

If pH = 11.93

pOH = 14.00 - 11.93 = 2.07

[OH- ] = 10^{-2.07}

[OH-] = 0.00851138 M

In 1 L solution we have 0.00851138 M moles OH- ions

In 0.341 L we have,

0.00851138  * 0.341

=0.0029 moles OH- ions

1 mol OH- ions = 6.022*10²³ ions

0.0029 moles OH- ions = ( 0.0029)  * (6.022*10²³)

= 0.017×10^{23}

Therefore,   0.017×10^{23} dissociated H ions are there in 341 ml of an aqueous solution whose ph is 11. 93

Learn more about dissociated ions here;

brainly.com/question/23525445

#SPJ4

4 0
1 year ago
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