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Marat540 [252]
3 years ago
5

Someone please help me with the second question ONLY

Chemistry
1 answer:
wlad13 [49]3 years ago
4 0

Answer:

no

Explanation:

this experiment could not be replicated, because there are no specific measurements. the details would not be the same because it does not include the type of paper used nor the diameter, width or length. A guess of the measurements would be the only way to replicate this experiment but other then that, no you cannot.

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What best describes the bonding in a water molecule
finlep [7]

Answer:

An oxygen atom shares a single electron with each H

Explanation:

H:O:H

Covalent bond, so

An oxygen atom shares a single electron with each H.

8 0
2 years ago
Assuming that the bath contains 250.0 g of water and that the calorimeter itself absorbs a negligible amount of heat, calculate
Anvisha [2.4K]

Answer:

-3272     kJ/mol

Explanation:

Given and known facts

Mass of Benzene = 0.187 grams

Mass of water = 250 grams

Standard heat capacity of water = 4.18 J/g∙°C

Change in temperature ΔT = 7.48°C

Heat

=250 * 4.18 * 7.48\\=7816.6 \\=7.82

Heat released by benzine is - 7.82 kJ

Now, we know that

0.187 grams of benzene release = -7.82  kJ heat

So, 1 g benzine releases

\frac{ -7.82 }{0.187}\\= -41.8

kJ/g

0.187 * \frac{1}{78.108}=0.00239 mol C6H6

Heat released

= \frac{-7.82}{ 0.00239}

=-3272     kJ/mol

4 0
2 years ago
Which of these observations would be classified as a physical property
g100num [7]
A lemon juice cleans a penny. I believe this to be the answer because the lemon cleans the penny but no molecules change
3 0
3 years ago
Read 2 more answers
If an acid has a ka=1.6x10^-10, what is the acidity of the solution?
LUCKY_DIMON [66]
The information given in the question is not enough to determine the acidity of the solution. This is because, acidity can only be found with the equation: pH = -log [H+].
 In order to determine the acidity of the solution, the half titration point value is needed, this will make it possible to determine the value of H30+.  If the half point titration value is known, then Ka will be equivalent to pH and the value will be evaluated using the equation: - log (1.6 * 10^-10).
5 0
2 years ago
How many molecules are there in 3 moles of aluminum chloride ?
Svetradugi [14.3K]

there are 4 atoms in aluminum chloride

6 0
2 years ago
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