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3 years ago

If the attractive forces in a substance is much less than the

Chemistry

2 answers:

romanna [79]3 years ago

5 0

Answer:

If the attractive forces in a substance is much less than the

molecular motion, then the substance will be in a "Gaseous" state.

Explanation:

When decreasing the attractive forces in a substance and making it "much" less than the molecular motion in the substance, the substance should be in a gaseous state.

When the average kinetic energy of a substance or object is small enough that the attractive forces is stable enough to hold all of the particles close together, the molecules in liquids and solids do not move apart.

If the average kinetic energy of a substance or object is great enough (greater than the attractive forces) to overpower the attractive forces between them, the molecules are able to move apart. This would mean that the substance is in a gaseous state.

Overall, if the attractive forces are less than the molecular motion then the molecular motion will over power the attractive forces, breaking the molecules apart and letting them move freely as molecules in a gaseous substance would.

zimovet [89]3 years ago

4 0

Answer:

solid, liquid

Explanation:

If the average kinetic energy is greater than the attractive forces between the particles, a substance will not condense to form a liquid or a solid. If the kinetic energy is less than the attractive forces, a liquid or solid will form.

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The best reading for the volume of the gas in the syringe in the picture shown right is

spayn [35]

Answer:

48.5 mL , just did it on edge

6 0

3 years ago

Is a candle melting in the hot sun a chemical or a physical change?

alukav5142 [94]

Chemical, because it is breaking down the chemical and properties in the candle itself.

4 0

3 years ago

Empirical formula of a compound is CH3. If the molar mass of the

Nonamiya [84]

Answer:

Explanation:

HERE WE TAKE CH3,

C = 1 × 12 = 12g

CH3 =15 g ans

7 0

3 years ago

Calculate the kinetic energy of a 8.8 x 10^13 kg comet moving at a speed of 33.0 km/s. Round your answer to 2 significant digits

g100num [7]

Answer:

$KE=4.79\times 10^{22}\ J$

Explanation:

Given that

Mass ,m= 8.8 x 10¹³

Speed ,v= 33 km/s

We know that 1 km= 1000 m

v= 33 x 10³ m/s

As we know that kinetic energy given as

$KE=\dfrac{1}{2}mv^2$

Now by putting the values in the above equation

$KE=\dfrac{1}{2}\times 8.8\times 10^{13}\times 33000^2$

$KE=4.7916\times 10^{22}\ J$

Therefore we can say that the kinetic energy will be

$KE=4.79\times 10^{22}\ J$

6 0

3 years ago

Which one of the following will change the value of anequilibrium constant?

IRINA_888 [86]

Answer:

d. changing temperature

Explanation:

The thermodynamic equilibrium constant K is defined as a quantity characterizing the equilibrium of a chemical reaction. For a reaction where concentrations are in equilibrium:

aA + bB ⇄ cC + dD

The equilibrium constant is:

$k = \frac{[C]^c[D]^d}{[A]^a[B]^b}$

Thus, the equilibrium constant will change if:

a. Varying the initial concentration of reactants . FALSE. The k constant doesn't depend of initial concentrations but concentration in equilibrium does.

b. Adding other substances that do not react with any of thespecies involved in the equilibrium . FALSE. The equilibrium constant just depends of substances that are involved in the equilibrium

c. Varying the initial concentration of products . FALSE. Again, equilibrium constant doesn't depend of initial concentrations.

d. Changing temperature . <em>TRUE. </em>As a thermodynamic constant, k depends of temperature thus:

$K = e^(-dG/RT)$

e. Changing the volume of the reaction vessel. FALSE. The changing in the volume of the reaction vessel will change just the initial concentrations of the reactants.

I hope it helps!

6 0

3 years ago