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3 years ago

9

Sugar dissolves in water explain heterogeneous and homogeneous

2 answers:

guapka [62]3 years ago

7 0

Explanation:

Sugar dissolves and is spread throughout the glass of water. ... The sugar-water is a homogenous mixture while the sand-water is a heterogeneous mixture. Both are mixtures, but only the sugar-water can also be called a solution.

Zepler [3.9K]3 years ago

3 0

Answer:

A homogeneous mixture is a solid, liquid or gaseous mixture that has the same proportions of its components throughout any given sample. Conversely, a heterogeneous mixture has components in which proportions vary throughout the sample.

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Select the correct structure that

lawyer [7]

Answer:

B

Explanation:

The naming of the compound is given by IUPAC
Numbering of the carbon atoms start from the double bond
The methyl groups lie at the 3rd position
Hence, its name will be :
<u>3,3 - dimethylcyclopentane</u>
<u>Option B shows the correct structure</u>

4 0

2 years ago

How do you build a machine dealing with nucleous

Liono4ka [1.6K]

You use a nucleus with inflection on the arm processor.

5 0

3 years ago

When 2.499 g of AX (s) dissolves in 135.3 g of water in a coffee-cup calorimeter the temperature rises from 23.6 °C to 35.2 °C.

Elena L [17]

Answer:

The enthalpy change for the solution process $\Delta H_{rxn}$ = - 158.34 kJ/mol

Explanation:

Given that:

The mass of salt AX = 2.499 g

The mass of water = 135.3 g

The mass of the solution = ( 2.499 + 135.3 ) g = 137.799 g

The specific heat of salt solution s is known to be = 4.18 J/g° C

The change in temperature i.e. ΔT = 35.2 °C - 23.6 °C = 11.6 °C

Thus, the amount of heat raised is equal to the heat absorbed by the calorimeter.

∴

$q_{reaction} = q_{solution}$

$q_{reaction} = -ms_{solution} \Delta T$

$q_{reaction} = -137.799 \ g \times 4.18 \dfrac{J}{g^0C}\times 11.6^0C$

$q_{reaction} = - 6682 \ J$

$q_{reaction} = - 6.682 \ kJ$

Recall that the mass of the salt = 2.499 g

The number of moles of the salt = $2.499 \ g \times \dfrac{1 \ mol \ of \ AX}{59.1097 \ g}$

= 0.0422 mol of AX

Finally the enthalpy change, $\Delta H_{rxn} = \dfrac{- 6.682 \ kJ}{ 0.0422 \ mol}$

= - 158.34 kJ/mol

The enthalpy change for the solution process $\Delta H_{rxn}$ = - 158.34 kJ/mol

3 0

3 years ago

For molecules with similar molecular weights, the dispersion forces become stronger as the molecules become more polarizable. fo

sweet [91]

True ncifjfjedkxkcnnfenskxkcjcndnenejskkxcfenen

8 0

3 years ago

What is the kinetic energy of a 25 kg object moving at a velocity of 2.5 m/s?

vovangra [49]

Answer:

<h2>78.13 J</h2>

Explanation:

The kinetic energy of an object can be found by using the formula

$k = \frac{1}{2} m {v}^{2} \\$

m is the mass

v is the velocity

From the question we have

$k = \frac{1}{2} \times 25 \times {2.5}^{2} \\ = 12.5 \times 6.25 \\ = 78.125 \: \: \: \: \: \: \: \:$

We have the final answer as

<h3>78.13 J</h3>

Hope this helps you

6 0

3 years ago