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3 years ago

State why argon is used in the light bulb. Explain your answer in terms of the electronic structure of an argon atom.

1 answer:

5 0

Hi I need Help with this :
A swimming pool has an inlet pipe that can fill the empty pool in 12 hours with the drain is closed and the inlet pipe is closed the drain can empty the full pool in 20 hours. When the pool is empty how long will it take the inlet pipe to fill the pool drain if it is left open ?

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Convert the temperature of dry ice, –77 ∞C, into degrees Fahrenheit and kelvin.

Viktor [21]

Explanation:

In order to convert temperature from degree Celsius to kelvin then we need to add 273 into the given temperature.

Therefore, converting $-77^{o}C$ into kelvin as follows.

Temperature in Kelvin = $-77^{o}C + 273$

= 196 K

Now, convert temperature from degree Celsius to degree Fahrenheit as follows.

Temperature in degree Fahrenheit = $(-77^{o}C \times \frac{9}{5}) + 32$

= $\frac{-693}{5} + 32$

= $106.6 ^{o}$ Fahrenheit

Thus, we can conclude that $-77^{0}C$ equals 196 K and $106.6 ^{o}$ Fahrenheit.

3 0

4 years ago

How do I calculate the pOH of a Solution at 25℃ with a [OH-1] = 6.5 x 10-9 M and state whether the Solution is Acidic, Basic, or

morpeh [17]

Answer:

pOH = 8.19

Acidic solution (pH < 7.0)

Explanation:

The pOH of the solution is defined as:

pOH = - log [OH⁻]

Since we have [OH⁻] = 6.5 x 10⁻⁹ M, we calculate the pOH as follows:

pOH = - log (6.5 x 10⁻⁹) = 8.19

To know if the solution is acidic, neutral or basic, we have to calculate the pH from the value of pOH:

pH + pOH = 14

⇒ pH = 14 - pOH = 14 - 8.19 = 5.81

The solution is acidic because pH < 7.0.

6 0

3 years ago

Use the collision theory to discuss how temp., concentration and surface area affect the rate of a chemical reaction?

pogonyaev

The collision theory explains how chemical reactions are made and different reactions have different reaction rates

Hope it helps.

4 0

3 years ago

Chemicals A and B react according to the equation A + B → C. How will the concentrations of each component of the reaction chang

Sever21 [200]

Over time, as the reaction approaches dynamic equilibrium, the concentrations of A and B will decrease and the concentration of C will increase. This is because chemical reactions tend to shift towards the side of the product(s).

Hope this helps!

6 0

4 years ago

Read 2 more answers

If the symbol X represents a central atom, Y represents outer atoms, and Z represents lone pairs on the central atom, the struct

Nadya [2.5K]

<span>XY4Z2-->Square planar (Electron domain geometry: Octahedral) sp3d2
XY4Z-->Seesaw (Electron domain geometry: Trigonal bipyramidal) sp3d
XY5Z-->Square pyramidal (Electron domain geometry: Octahedral) sp3d2
XY2Z3-->Linear (Electron domain geometry: Trigonal bipyramidal) sp3d
XY2Z-->Bent (Electron domain geometry: Trigonal planar) sp2
XY3Z-->Trigonal pyramidal (Electron domain geometry: Tetrahedral) sp3
XY2Z2-->Linear (Electron domain geometry: Tetrahedral) sp3
XY3Z2-->T shaped (Electron domain geometry: Trigonal bipryamidal) sp3d
XY2-->Linear (Electron domain geometry: Linear) sp
XY3 Trigonal planar (Electron geometry: Trigonal planar) sp2
XY4-->Tetrahedral (Electron domain geometry: tetrahedral) sp3
XY5-->Trigonal bipyramidal (Electron domain geometry: Trigonal bipyramidal) sp3d
XY6-->Octahedral (Electron domain geometry: Octahedral) sp3d2</span>

7 0

4 years ago

Read 2 more answers