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3 years ago

Which one of the following statements concerning the electric dipole moment is false?

Physics

1 answer:

baherus [9]3 years ago

6 0

Answer:

A.The dipole moment is a scalar quantity.

Explanation:

We know that

Dipole moment :It measure the polarity of chemical bond in a molecule .

The electric dipole moment is equal to product of any charge (positive or negative ) and the distance between the two charges.

Mathematical representation:

$\mu=q\times d$

Where $\mu$ =Dipole moment

q=Charge on atom or particle

d=Distance between two charged particles

It helps to find out the molecule is polar or non- polar.

When the dipole moment is zero then the molecule is non-polar.

Dipole moment is a vector quantity.

The direction of dipole moment from negative charge to positive.

When unit of charge is C and unit of distance is m.

Then, unit of dipole moment=C-m

Hence, option A is false.

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Consider the following equilibrium at 979 K for the dissociation of molecular iodine into atoms of iodine. I2(g) equilibrium rea

GenaCL600 [577]

Answer: $I_2$ = 0.0050 M

$I$ = 0.0155 M

Explanation:

Initial moles of $I_2$ = 0.072 mole

Volume of container = 3.9 L

Initial concentration of $I_2=\frac{moles}{volume}=\frac{0.072moles}{3.9L}=0.018M$

The given balanced equilibrium reaction is,

$I_2(g)\rightleftharpoons 2I(g)$

Initial conc. 0.018 M 0

At eqm. conc. (0.018-x) M (2x) M

The expression for equilibrium constant for this reaction will be,

$K_c=\frac{[I]^2}{[I_2]}$

$K_c=\frac{(2x)^2}{0.2-x}$

we are given : $K_c=1.60\times 10^{-3}$

Now put all the given values in this expression, we get :

$1.60\times 10^{-3}=\frac{(2x)^2}{(0.018-x)}$

$x=0.0025$

So, the concentrations for the components at equilibrium are:

$[I]=2\times x=2\times 0.0025=0.0050$

$[I_2]=0.018-x=0.018-0.0025=0.0155$

Hence, concentrations of $I_2$ and $I$ are 0.0050 M ad 0.0155 M respectively.

4 0

3 years ago

Find the acceleration of an object that has a mass of 6 kg, if it is acted upon by a net force of 42 N.

pychu [463]

Answer:

7 m/s²

Explanation:

The formula for force is:

$f= m*a$

We want to find acceleration, so we must rearrange the formula for $a$ . Divide both sides of the equation by $m$

$\frac{f}{m}=\frac{m*a}{m}$

$\frac{f}{m}=a$

Acceleration can be found by dividing the force by the mass.

The force is 42 newtons and the mass is 6 kilograms. A newton is equal to 1 kg * m/s², therefore the force is 42 kg* m/s².

$f= 42 kg*m/s^2\\m=6 kg$

Substitute the values into the formula.

$a=\frac{f}{m}$

$a=\frac{42 kg*m/s^2}{6kg}$

Divide. When we divide, the kg in the numerator and denominator will cancel each other out.

$a=\frac{42}{6}m/s^2$

$a= 7 m/s^2$

The acceleration of the object is 7 meters per square seconds.

7 0

3 years ago

State the ohm's law in words

Anton [14]

Explanation:

Ohm's law states that the voltage or potential difference between two points is directly proportional to the current or electricity passing through the resistance, and directly proportional to the resistance of the circuit. The formula for Ohm's law is V=IR.

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Wittaler [7]

C. written reports !

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A thermal hazard symbol means your should wear protective clothing so that you do not get burned. True False

Ivan

True. If something is thermal, that means that by getting to close to it, you could get burned.

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3 years ago