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lys-0071 [83]
3 years ago
13

Are protons and neutrons the same size? Explain.

Chemistry
1 answer:
Ivahew [28]3 years ago
4 0

no because they are two diffrent things

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Which type of basin forms at transform boundaries?<br><br> rift<br> wedge<br> arc<br> strike-slip
Blababa [14]

Answer:

Strike slip forms at transform boundaries

4 0
3 years ago
Read 2 more answers
The density of lead is 11.3 g/cm. What is the mass of a cube of lead with 10.0 cm on each edge? Show work please.​
tresset_1 [31]

Mass of the lead cube :

  • \boxed{ \boxed{11.3 \:  \: kg}}

4 0
3 years ago
In a unimolecular reaction with twice as much starting material as product at equilibrium, what is the value of Keq? Is ΔG o pos
lubasha [3.4K]

Answer : The value of K_{eq} is, 0.5 and \Delta G= positive.

Explanation :

The unimolecular reaction is:

A\rightarrow B

In unimolecular reaction, the starting material is 2 times to the product.

A=2B      .........(1)

As we know that:

K_{eq}=\frac{B}{A}     ...........(2)

Now substitute equation 1 in 2, we get:

K_{eq}=\frac{\frac{A}{2}}{A}

K_{eq}=0.5

Now we have to calculate the value of \Delta G^o at 298 K.

\Delta G^o=-RT\ln K_{eq}

where,

\Delta G^o = standard Gibbs free energy = ?

R = gas constant = 8.314 J/mol.K

T = temperature = 298 K

K_{eq} = equilibrium constant = 0.5

Now put all the given values on the above formula, we get:

\Delta G^o=-(8.314J/mol.K)\times (298K)\ln (0.5)

\Delta G^o=1717.32J/mol

Thus, the value of \Delta G^o at 298 K is, 1717.32 J/mol

As we know that:

\Delta G= +ve, reaction is non spontaneous

\Delta G= -ve, reaction is spontaneous

\Delta G= 0, reaction is in equilibrium

Thus, the \Delta G= +ve. So, the reaction is non spontaneous.

8 0
3 years ago
A rubber ball is held 4.0 m above a concave spherical mirror with a radius of curvature of 1.5 m. At time equals zero, the ball
exis [7]

The time elapsed when the ball placed above the concave mirror and the image formed would be at the same location is 0.55 s.

<h3>Image distance</h3>

The position of the image formed is determined using the followimg mirror formula;

\frac{1}{f} = \frac{1}{v} + \frac{1}{u}

where;

  • f is the focal length of the mirror
  • v is the image distance
  • u is the object distance

f = R/2

f = 1.5/2

f = 0.75 m

When the ball and its image is in the same position, u = v

The position of the ball is calculated as;

\frac{1}{f} = \frac{1}{u} + \frac{1}{u} \\\\\frac{1}{f} = \frac{2}{u} \\\\u = 2f\\\\u = 2(0.75)\\\\u = 1.5 \ m

<h3>Time of motion of the ball</h3>

The time taken for the ball to travel the caluclated distance is determined as;

h = ut + ¹/₂gt²

1.5 = 0  + ¹/₂(9.8)t²

1.5 = 4.9t²

t² = 1.5/4.9

t² = 0.306

t = 0.55 s

Thus, the time elapsed when the ball and its image are at the same location is 0.55 s.

Learn more about concave mirror here: brainly.com/question/7512320

8 0
2 years ago
How does the level of intermoleculars bonding between the particles in matter affect the state of matter the particles are takin
Lunna [17]

Explanation:

Intermolecular force s between particles in a matter holds particles of molecules together in substances.

  • The stronger the intermolecular forces the more solid a substance is.
  • The weakest intermolecular attraction are found in gases as they have negligible attractive forces in between their particles.
  • Solids are held together by very strong attractive forces.
  • Liquids have weak forces holding them in place and this allows for a little movement.
  • Gases are typically have very weak to negligible attractive forces.
3 0
3 years ago
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