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3 years ago

One can find the pH of a substance by using ___.

Chemistry

2 answers:

Scorpion4ik [409]3 years ago

5 0

D, litmus paper indicator

Arisa [49]3 years ago

5 0

Explanation:

C. Plain paper indicator.

Litmus paper indcator can only tell you if the solution is acidic/neutral/alkaline, but not to what extent.

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All scientists try to base their conclusions on _____.

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They try to base their conclusions off of data and measurements of which they should record from conducting experiments

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Part 1: Cats falling out of windows

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A cat that falls out of the window even if it seems to be doing well, must urgently go to a veterinary clinic in order to be placed under surveillance for at least 24 to 72 hours

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3 years ago

Structural formula for 4-nonene and fluorine gas

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I THINK it's 1,1-Difluorononane, or $C_9H_{18}F_2$ .

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PLS I NEED HELP give me examples of an atom

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Answer:

Neon (Ne)

Hydrogen (H)

Argon (Ar)

Iron (Fe)

Calcium (Ca)

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F-, a fluorine anion.

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3 years ago

At 1000 K, Kp=19.9 for the reaction Fe2O3(s)+3CO(g)<--->2Fe(s)+3CO2(g) What are the equilibrium partial pressures of CO an

SOVA2 [1]

Answer: The equilibrium concentration of CO is 0.243 atm

Explanation:

We are given:

Initial partial pressure of carbon dioxide = 0.902 atm

As, carbon dioxide is present initially. This means that the reaction is proceeding backwards.

For the given chemical equation:

$Fe_2O_3(s)+3CO(g)\rightleftharpoons 2Fe(s)+3CO_2(g)$

Initial: 0.902

At eqllm: 3x (0.902-3x)

The expression of $K_p$ for above equation follows:

$K_p=\frac{(p_{CO_2})^3}{(p_{CO})^3}$

We are given:

$K_p=19.9$

Putting values in above equation, we get:

$19.9=\frac{(0.902-3x)^3}{(3x)^3}\\\\x=0.0810$

So, equilibrium concentration of CO = 3x = (3 × 0.0810) = 0.243atm[/tex]

Hence, the equilibrium concentration of CO is 0.243 atm

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3 years ago

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