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Oduvanchick [21]
3 years ago
10

The specific heat of water is 4.186 J/g°C. A sample of 40. g H subscript 2 O is at an initial temperature of 91.0 °C. If the sam

ple of water released a total of 1,300 joules, what is the approximate final temperature of the water?
a. 74 °C

b. 87 °C

c. 81 °C

d. 83 °C
Chemistry
1 answer:
kati45 [8]3 years ago
7 0
The is 83 degrees outside
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All elements have a AHf, of ___
stellarik [79]

All elements have a AHf, of <u>0</u>

kJ/mole at standard temperature and pressure.

<h3>What is an element?</h3>

An element can be defined as a substance which cannot be split into two or more simpler forms by an ordinary chemical process

Below are the list of the first twenty elements:

  • Hydrogen
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So therefore, all elements have a AHf, of <u>0</u>

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2 years ago
Why is the C-14/C-12 ratio used to date once-living organisms?
ki77a [65]
Because C-12 is fixed value of any organisms but the value of C-14 is constantly decreasing by time thats why every organism have their specific ratio of C14/C12
8 0
4 years ago
Which of the following statements is NOT true about practice?
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Where is the following statements??
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3 years ago
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Be able to describe the relationship between Freedom of Movement and phase change.
lisabon 2012 [21]

Ion knoe Wdym by “be able to describ’ so ima put it in my own words idr lol:)

if you talm bout some kentic energy or sum ok but other Dan dat ion knoe tbh

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7 0
3 years ago
choose any bases that will selectively deprotonate the above acid, that is, any bases that will favor the formation of products.
Zanzabum

In order to deprotonate an acid, we must remove protons in order to achieve a more stable conjugate base. For this example, we can use the relationship between carboxylic acid and hydroxide.

Deprotonation is the removal of a proton from a specific type of acid in reaction to its coming into contact with a strong base. The compound formed from this reaction is known as the conjugate base of that acid. The opposite process is also possible and is when a proton is added to a special kind of base. This is a process referred to as protonation, which forms the conjugate acid of that base.

For the example we have chosen to give, the conjugate base is the carboxylate salt. This would be the compound formed by the deprotonated carboxylic acid. The base in question was strong enough to deprotonate the acid due to the greater stability offered as a conjugated base.

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8 0
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