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Elena L
9 days ago
8

If a reaction occurs, what will be the products of the unbalanced reaction below?Cu(s) + Ni(NO3)2(aq) 

Chemistry
1 answer:
Alekssandra [2.6K]9 days ago
3 0
Cu(NO3)2 --> MM187.5558 NiNO3 *COEF2* --> 120.6983
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The value of delta G at 141.0 degrees celsius for the formation of phosphorous trichloride from its constituent elements,
VMariaS [2631]
The appropriate answer is option E. Gibbs free energy can be expressed using the equation: ΔG = ΔH - TΔS, where ΔH denotes the change in enthalpy of the reaction, T is the reaction temperature, and ΔS signifies entropy change. For our calculations, we have ΔH = -720.5 kJ/mol which converts to -720500 J/mol (given that 1 kJ = 1000 J), ΔS = -263.7 J/K, and T = 141.0°C, which equals 414.15 K. Consequently, the Gibbs free energy for the specified reaction at 141.0°C is calculated as -611.3 kJ/mol.
6 0
10 days ago
Give an example of a rule of the natural world that a scientist can assume is always true.
Alekssandra [2616]
Laws of Nature should be differentiated from Scientific and Natural Laws. The Necessitarian Theory suggests that Laws of Nature are those principles which influence the natural phenomena in the universe, meaning the natural world adheres to them.
4 0
18 days ago
How many sulfur atoms are present in 25.6 g of Al2(S2O3)3
castortr0y [2628]

Given the mass of Al_{2}(S_{2}O_{3})_{3}=25.6 g

The molar mass of Al_{2}(S_{2}O_{3})_{3}=390.35g/mol

Conversion of mass of Al_{2}(S_{2}O_{3})_{3} to moles:

25.6 g Al_{2}(S_{2}O_{3})_{3}*\frac{1molAl_{2}(S_{2}O_{3}}{390.35 gAl_{2}(S_{2}O_{3}} =0.0656molAl_{2}(S_{2}O_{3}

Conversion of moles Al_{2}(S_{2}O_{3})_{3} to moles of sulfur:

0.0656mol Al_{2}(S_{2}O_{3})_{3}*\frac{6molS}{1mol Al_{2}(S_{2}O_{3})_{3}}=0.3936 molS

Conversion of moles of sulfur to individual sulfur atoms using Avogadro's number:

1 mol = 6.022*10^{23}atoms

0.3936mol S *\frac{6.022*10^{23}atoms S}{1 mol S}=2.37*10^{23} S atoms

5 0
28 days ago
An unknown liquid has a mass of 4.25 × 108 mg and a volume of 0.250 m3. what is the density of the liquid in units of g/ml?
VMariaS [2631]
Density is calculated as mass divided by volume.
  Step one:
Convert m³ to ml.
1 m³ = 1,000,000 ml
0.250 m³ x 1,000,000 = 250,000 ml
  Step two: Convert mg to g.
1 mg = 0.001 g, hence 4.25 x 10^8 mg equals 0.459 g.
Consequently, the density comes out to be 0.459 g/250,000 = 1.836 x 10^-6 g/ml.
8 0
1 month ago
Read 2 more answers
Given the following equation and heat of reaction: 2 moles of A combine with 2 moles of B to produce 6 moles of C and 26 kJ What
KiRa [2612]

Answer: The change in enthalpy will be -13.

Explanation:-

Endothermic reactions absorb heat, while exothermic reactions release heat. In the case of an endothermic reaction, the change in enthalpy is represented as positive, whereas for an exothermic reaction, it is negative.

\Delta H  \Delta H

2A+2B\rightarrow 6C+26kJWhen one mole of A combines with one mole of B to form three moles of C

2A+2B\rightarrow 6CSo the stoichiometric ratio being halved also results in the enthalpy for the reaction being halved.\DeltaH=-26kJ

Thus, for this reaction:

 

     

A+B\rightarrow 3C+\frac{26}{2}kJ

The resulting change in enthalpy is -13.

A+B\rightarrow 3C\DeltaH=-13kJ

8 0
7 days ago
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