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bogdanovich [222]

3 years ago

13

Identify a process that is NOT reversible. A. melting of steel B. freezing water C. melting of ice D. frying an egg E. depositio

n of carbon dioxide (gas to solid)

1 answer:

vredina [299]3 years ago

8 0

I’m pretty sure it would be D. Frying an egg

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Answer ASAP Pls don't use links

lord [1]

Answer:

3 The Shank and the Threads

8 0

2 years ago

The value for Kw is 1.0 x 10-14 at 298K, but this value is temperature dependent. Given what you know about Kw and acid/base che

Papessa [141]

Answer:

The correct answer is option b.

Explanation:

$H_2O\rightleftharpoons H^++OH^-$

The ionic product of water : $K_w$

$K_w=[H^+][OH^-]$

A pure water has equal concentration of hydrogen ions and hydroxide ions, hence neutral.

$K_w=[H^+][H^+]=[H^+]^2$

The ionic product of water at 283 K = $K_w=0.29\times 10^{-14}$

$K_w=[H^+]^2$

$0.29\times 10^{-14}=[H^+]^2$

$[H^+]=5.385\times 10^{-8} M$

The pH of the water at 283 k;

$pH=-\log [H^+]$

$=-\log[5.385\times 10^{-8} M]=7.26$

A pure water has equal concentration of hydrogen ions and hydroxide ions,So water will e neutral at this temperature also.

The correct answer is option b.

4 0

2 years ago

Which of the following is a non polar molecule ?

lubasha [3.4K]

N2 is non polar because electronegative of both the atoms are same and N2 also have linear shape

3 0

2 years ago

H2o, ch4, secl2, chcl3 lowest boiling point

ICE Princess25 [194]

Ch4 is the lowest boiling point

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3 years ago

What is an atomic mass unti

Vlada [557]

Explanation:

a unit of mass used to express atomic and molecular weights, equal to one twelfth of the mass of an atom of carbon-12.

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2 years ago

Read 2 more answers