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Lubov Fominskaja [6]

3 years ago

6

The energy needed to destabilize existing chemical bonds and start a chemical reaction is called ____.

1 answer:

postnew [5]3 years ago

3 0

<span>If all chemical reactions that release free energy tend to occur spontaneously,why haven't all such reactions already occurred? One reason is that most reactions require an input of energy to get started.Before it is possible to form new chemical bonds,even bonds that contain less energy,it is first necessary to break the existing bonds,and that takes energy.The extra energy required to destabilize existing chemical bonds and initiate a chemical reaction is called activation energy.</span>

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Write down moleculer formula:

Temka [501]

1. Ca(HCO3)2
2.Ca(HCOO)2
3. Ca(OH)2
4.NaOH
5.KCI
6.MgSO4
7.PbO
8.HCl
9.HNO3
10.H2SO4
11.NH3
12.(NH4)3PO4
13.NaOH
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5 0

3 years ago

Read 2 more answers

the standard change in Gibbs free energy is Δ????°′=7.53 kJ/molΔG°′=7.53 kJ/mol . Calculate Δ????ΔG for this reaction at 298 K29

Vera_Pavlovna [14]

Answer:

ΔG = 16.218 KJ/mol

Explanation:

dihydroxyacetone phosphate ↔ glyceraldehyde-3-phosphate

ΔG = ΔG° - RT Ln Q

∴ ΔG° = 7.53 KJ/mol * ( 1000 J / KJ ) = 7530 J/mol

∴ R = 8.314 J/K.mol

∴ T = 298 K

∴ Q = [glyceraldehyde-3-phosphate] / [dihydroxyacetone phosphate]

⇒ Q = 0.00300 / 0.100 = 0.03

⇒ ΔG = 7530J/mol - (( 8.314 J/K.mol) * ( 298 K ) * Ln ( 0.03 ))

⇒ ΔG = 16217.7496 J/mol ( 16.218 KJ/mol )

5 0

4 years ago

In the cases where no electric current flowed, do compounds form atoms, molecules or lattices in solution?

dsp73

Answer: 28

Explanation:a=d+a

8 0

2 years ago

Write a net ionic equation for the overall reaction that occurs when aqueous solutions of hydrosulfuric acid (H2S) and sodium hy

vovangra [49]

Answer: 2NH4Br(aq)+Pb(C2H302(aq)-------------------->

2NH4C2H3o2(aq) + PbBr2(s)

Explanation:

The net equation is :Pb2+ (aq)2Br (aq)---------------------->PbBr2(s)

the spectator ions NH4 +C2H3O2 are canceled

6 0

3 years ago

The unit conversion between rankine and kelvin is (linear, exponential, quadratic, none of the above)?

diamong [38]

Answer:

Unit conversion between Rankine and Kelvin is linear.

Unit conversion between degree Celsius and degree Fahrenheit is linear.

Explanation:

Relation between rankine and Kelvin is

$R\ =\ \dfrac{9}{5}\ K$

So, the plot between Rankine and Kelvin is a straight line with zero intercept and has a slope having value $\dfrac{9}{5}$ .

Relation between degrees Celsius and degrees Fahrenheit is given by

$^{\circ}C\ =\ \dfrac{5}{9}\ (^{\circ}F\ -\ 32)$

So, the plot between degrees Celsius and degrees Fahrenheit is a straight line with slope $\dfrac{5}{9}$ and negative intercept of $\dfrac{160}{9}$ .

4 0

4 years ago