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4 years ago

NEED THIS NOW PLZZ!!!!

Chemistry

1 answer:

yuradex [85]4 years ago

6 0

Answer:

the box will move to the right

Explanation:

because the force is greater on the left

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A/1 * B/C = D

grigory [225]

Answer : 4.8 florins can you exchange for your 4 guilders.

Solution : Given,

The current exchange rate for every 2.4 florins is 2.0 guilders

As per question,

The exchange rate is 2.0 guilders for every 2.4 florins

The exchange rate is 1 guilders for every $\frac{2.4}{2.0}$ florins

The exchange rate is 4 guilders for every $\frac{2.4}{2.0}\times 4=4.8$ florins

Therefore, the 4.8 florins can you exchange for your 4 guilders.

3 0

3 years ago

What best explains the type of energy present in the wheels of a moving bus?

Nina [5.8K]

id say its C mechanical energy making the wheels turn.

4 0

4 years ago

Glucose is soluble in water. Why is cellulose, which is made up of glucose, insoluble in water?

lapo4ka [179]

.....................

3 0

3 years ago

The ΔH vap of a certain compound is 46.55 kJ⋅ mol−1 and its ΔS vap is 67.37 J⋅mol−1⋅K−1.

arsen [322]

690 Kelvin is the boiling point of this compound.

Explanation:

Enthalpy is the sum of internal energy and the product of pressure and volume that is how much energy is in the substance.

Entropy is the measurement of randomness and measure of thermal energy per unit of temperature.

ΔH vap of compound is 46.55 kJ⋅ mol− or J.MOL-1

ΔS vap is 67.37 J⋅mol−1⋅K−1.

The boiling point or temperature can be calculated by the formula:

T= $\frac{ΔH vap}{ΔS vap}$

T = $\frac{46550}{67.37}$

= 690 Kelvin

The boiling point is the temperature when atmospheric temperature gets equal to

4 0

3 years ago

Read 2 more answers

Calculate ΔS° for the reaction: 4Cr(s) + 3O2(g) → 2Cr2O3(s), Substance: Cr(s) O2(g) Cr2O3(s), S°(J/K⋅mol): 23.77 205.138 81.2

Mariana [72]

<u>Answer:</u> The value of $\Delta S^o$ for the reaction is 1051.93 J/K

<u>Explanation:</u>

Entropy change is defined as the difference in entropy of all the product and the reactants each multiplied with their respective number of moles.

The equation used to calculate entropy change is of a reaction is:

$\Delta S^o_{rxn}=\sum [n\times \Delta S^o_{(product)}]-\sum [n\times \Delta S^o_{(reactant)}]$

For the given chemical reaction:

$4Cr(s)+3O_2(g)\rightarrow 2Cr_2O_3(s)$

The equation for the entropy change of the above reaction is:

$\Delta S^o_{rxn}=[(2\times \Delta S^o_{(Cr_2O_3(s))})]-[(4\times \Delta S^o_{(Cr(s))})+(3\times \Delta S^o_{(O_2(g))})]$

We are given:

$\Delta S^o_{(Cr_2O_3(s))}=881.2J/K.mol\\\Delta S^o_{(O_2(g))}=205.13J/K.mol\\\Delta S^o_{(Cr(s))}=23.77J/K.mol$

Putting values in above equation, we get:

$\Delta S^o_{rxn}=[(2\times (881.2))]-[(4\times (23.77))+(3\times (205.13))]\\\\\Delta S^o_{rxn}=1051.93J/K$

Hence, the value of $\Delta S^o$ for the reaction is 1051.93 J/K

5 0

4 years ago