What is the charge for MnO4

How to calculate acceleration

AnnyKZ [126]

F=ma is the formula to calculate acceleration

8 0

3 years ago

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What is the density of a substance with a mass of 0.0450 and a volume of 26.4?

Tanya [424]

Answer:

$density \: = \frac{mass}{volume} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{0.0450}{26.4} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 0.0017 \\$

Explanation:

plz....

Mark it as a brilliant answer

7 0

4 years ago

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Polonium-208 undergoes alpha decay. In addition to the alpha

Yanka [14]

Answer:

C

Explanation:

C

7 0

3 years ago

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Two hydrogen atoms interact to form a hydrogen molecule. Classify the following statements that describe the stages of bond form

shtirl [24]

Answer:

Attractive force is predominant between the two atoms

The two hydrogen atoms approach each other to form a bond
The two hydrogen atoms start to combine to form a hydrogen molecule

Repulsive force is predominant between the two atoms

The potential energy of the system is positive
The internuclear distance between the two hydrogen atoms is less than the bond length

Attractive and repulsive forces balance each other

The two hydrogen atoms form a stable hydrogen molecule
The potential energy of the system is at minimum

There is no interaction between the two atoms

The hydrogen atoms are very far apart

Explanations:

<em>increase in potential energy causes repulsion</em> between the atoms, whereas<em> decrease in potential energy causes attraction</em> between the atoms
in order for the bonding to occur, the attractive forces must be greater than the repulsion forces.
The potential energy is positive when the repulsion forces is greater. This is because the distance between the two atoms is smaller than the bond length
The potential energy of the system is at its minimum because the attractive and repulsive forces balance out each other.

3 0

3 years ago

Two identical bottles at the same temperature contain the same gas. If bottle B has twice the volume and contains half the numbe

yuradex [85]

Answer:

The ratio of pressure in bottle B to that of bottle A is 1 : 4

Explanation:

We'll be by calculating the pressure in both bottles. This is illustrated below below:

For A:

Temperature (T) = T

Volume (V) = V

Number of mole (n) = n

Gas constant (R) = 0.0821 atm.L/Kmol

Pressure (P) =...?

PV = nRT

PV = n x 0.0821 x T

Divide both side by V

P = nT0.0821/V

Therefore, the pressure, in bottle A is

PA = nT0.0821/V

For B:

Temperature (T) = the same as that of A = T

Volume (V) = twice that of A = 2V

Number of mole (n) = half that of A = ½n

Gas constant (R) = 0.0821 atm.L/Kmol

Pressure (P) =...?

PV = nRT

P x 2V = ½n x 0.0821 x T

Divide both side by 2V

P = ½n x 0.0821 x T/2V

P = nT0.0821/4V

Therefore, the pressure in bottle B is:

PB = nT0.0821/4V

Now, we can obtain the ratio of pressure in bottle B to that of bottle A as follow:

Pressure in bottle A (PA) = nT0.0821/V

Pressure in bottle B (PB) = nT0.0821/4V

PB/PA = nT0.0821/4V ÷ nT0.0821/V

PB/PA = nT0.0821/4V x V/nT0.0821

PB/PA = 1/4

Therefore, the ratio of pressure in bottle B to that of bottle A is 1 : 4.

3 0

4 years ago