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What is the rapid movement of excess charge known as

EastWind [94]

Answer:

The rapid movement of excess charge from one place to another is an electric discharge.

Explanation:

A material in which electrons CANNOT move easily from place to place is an insulator. A material in which electrons CAN move easily from place to place is a conductor.

3 0

3 years ago

The equilibrium constant, Kc, for the reaction N2O4(g)⇌2NO2(g) is 5.0×10−3. If the equilibrium mixture contains [NO2] = 0.050 M

Sergeu [11.5K]

Answer:

0.50 M is the molar concentration of $N_2O_4$ .

Explanation:

The equilibrium constant of the reaction = $K_c=5.0\times 10^{-3}$

$N_2O_4(g)\rightleftharpoons 2NO_2(g)$

Equilibrium concentration of $NO_2$ = 0.050 M

$[NO_2]=0.050 M$

Equilibrium concentration of $N_2O_4$ = ?

$[N_2O_4]= x$

The equilibrium constant of the reaction is given aSL:

$K_c=\frac{[NO_2]^2}{[N_2O_4]}$

$K_c=\frac{(0.050 M)^2}{x}=5.0\times 10^{-3}$

$x = 0.50 M$

0.50 M is the molar concentration of $N_2O_4$ .

4 0

4 years ago

Give an example of a polar molecular compound that dissolves in water

VLD [36.1K]

Try sugar. I hope this helps!!!!!

7 0

4 years ago

The ΔG° of the hydrolysis reaction of ATP is –7.3 kcal/mole, but in a cell the actual ΔG is much more negative. What is the reas

yanalaym [24]

Answer:

ΔG° is for ideal (fixed) or standard conditions which cannot be found at the cellular level while ΔG is dependent on the quantities of reactants and products present at a specific time

Explanation:

ΔG° is fixed value for a given reaction that indicates the direction in which the reaction will proceed in a chemical equation under ideal conditions and because conditions within a cell varies and are unlike standard conditions, ΔG° cannot predict the direction of a cellular reaction at any given time. To predict the direction of progression of a reaction within the cell, ΔG is used, which depends on the amounts of the reactants and products present at a particular time

3 0

3 years ago

The 1H-NMR of a compound with molecular formula C6H12O2 consists of four signals: 1.1 (triplet, integrating to 3 Hydrogens), 1.2

Tamiku [17]

Answer:

Isopropyl propionate

Explanation:

1. Information from formula

The formula is C₆H₁₂O₂. A six-carbon alkane would have the formula C₆H₁₄. The deficiency of two H atoms indicates the presence of either a ring or a double bond.

2. Information from the spectrum

(a) Triplet-quartet

A 3H triplet and a 2H quartet is the classic pattern for a CH₃CH₂- (ethyl) group

(b) Septet-doublet

A 1H septet and a 6H doublet is the classic pattern for a -CH(CH₃)₂ (isopropyl) group

(c) The rest of the molecule

The ethyl and isopropyl groups together add up to C₇H₁₂.

The rest of the molecule must have the formula CO₂ and one unit of unsaturation. That must be a C=O group.

The compound is either

CH₃CH₂-COO-CH(CH₃)₂ or (CH₃)₂CH-COO-CH₂CH₃.

(d) Well, which is it?

The O atom of the ester function should have the greatest effect on the H atom on the adjacent carbon atom.

The CH of an isopropyl is normally at 1.7. The adjacent O atom should pull it down perhaps 3.2 units to 4.9.

The CH₂ of an ethyl group is normally at 1.2. The adjacent O atom should pull it down to about 4.4.

We see a signal at 5.0 but none near 4.4. The compound is isopropyl propionate.

3. Summary

My peak assignments are shown in the diagram below.

4 0

4 years ago