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stich3 [128]
3 years ago
8

Matter is more likely to exist in the ________ state as the temperature is lowered.

Chemistry
1 answer:
katovenus [111]3 years ago
7 0
As the temperature is lowered matter is more likely to exist in the solid state
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At the end we stopped the distillation with some material left in the vial. Why is it considered unsafe to distill until dryness
kakasveta [241]

Answer:

See the answer below

Explanation:

Distillation is a process of separating the contents of a liquid mixture by making use of the difference in the boiling temperatures of the components of the mixture. As the boiling point of each component is reached, it evaporates off and the vapor is condensed and collected to give a pure product.

<em>It is never advisable to distillate to dryness because allowing the content of the distilling flask to dry up can cause heat to damage the flask or in some extreme cases, cause unintended chemical reactions that might alter the outcome of the experiment or cause laboratory accident.</em>

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3 years ago
Describe the nucleus of the atom. Include a description of its size relative to the rest of the atom.
faust18 [17]

Answer:

The nucleus is the most densely compacted part of the atom, it is in the center circled by the electron cloud or shells. It is filled with positively charged protons, and neutrons which have no charge. It is smaller than the electron cloud in size, but in quantity it has more subatomic particles since protons and electrons are equal and the nucleus has nuetrons

6 0
3 years ago
Almost all energy on Earth came from the blank
pishuonlain [190]

Answer:

sun

Explanation:

5 0
3 years ago
Read 2 more answers
You placed 43.1 g of an unknown metal at 100 °C into a coffee cup calorimeter that contained 50.0 g of water that was initially
nika2105 [10]

Answer :

(a) The heat released by the metal is -312.48 J

(b) The specific heat of the metal is 0.0944J/g^oC

Explanation :

<u>For part A :</u>

Heat released by the metal = Heat absorbed by the calorimeter + Heat absorbed by the water

q=[q_1+q_2]

q=[c_1\times \Delta T+m_2\times c_2\times \Delta T]

where,

q = heat released by the metal

q_1 = heat absorbed by the calorimeter

q_2 = heat absorbed by the water

c_1 = specific heat of calorimeter = 51.5J/^oC

c_2 = specific heat of water = 4.184J/g^oC

m_2 = mass of water = 50.0 g

\Delta T = change in temperature = (T_{final}-T_{initial})=23.2-22.0=1.2^oC

Now put all the given values in the above formula, we get:

q=[(51.5J/^oC\times 1.2^oC)+(50.0g\times 4.184J/g^oC\times 1.2^oC)]

q=312.48J

Thus, the heat released by the metal is -312.48 J

<u>For part B :</u>

q=m\times c\times \Delta T

q = heat released by the metal = -312.48 J

m = mass of metal = 43.1 g

c = specific heat of metal = ?

\Delta T = change in temperature = (T_{final}-T_{initial})=23.2-100=76.8^oC

Now put all the given values in the above formula, we get:

-312.48J=43.1g\times c\times 76.8^oC

c=0.0944J/g^oC

Thus, the specific heat of the metal is 0.0944J/g^oC

8 0
3 years ago
find the activity coefficient of h , in a solution containing 0.010 m hcl plus 0.040 kclo4. what is the ph of the solution?
Lisa [10]

The activity coefficient of h is 0.05

The ph of the solution is 2.08

To find the activity coefficient, apply the concept of ionic equilibrium

h( activity coefficient)= 1/2CZ²

C is the concentration of species

Z is the charge on individual species

<em>h= 1/2( 0.01 x1²+ 0.04x (-1)²+0.01 x1²+0.04x (-1)²)</em>

<em>h= 0.05 </em>

For the pH of the solution, apply the formula

<em>pH= -log( H⁺x0.83)</em>

<em>pH = - log(0.01x0.83)</em>

<em>= 2.08</em>

To learn more about the pH of the solution, visit brainly.com/question/26767292

#SPJ4

4 0
1 year ago
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