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alekssr [168]
3 years ago
8

Provide two examples of a metal oxide and explain what they are used for

Chemistry
1 answer:
vekshin13 years ago
3 0

Magnesium Oxide - Used as an electrical insulator.

Calcium Oxide - Used for water purification.

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Explain the meaning of each term in the symbol aXz
Ede4ka [16]

AXz

Explanation:

It is a chemical notation of nuclide

Here X is the symbol of the element

A is the mass number of element

A=n+p(sum of protons and neutrons)

Z is the atomic number.

For example, 12C6

Hers X is C, symbol of carbon

12 is the mass number and 6 is the atomic number of the carbon.

8 0
3 years ago
Which of the following units is an SI base unit?
Kisachek [45]

Answer:

kg

Explanation:

kilogram√

m³×

cm×

l×

5 0
3 years ago
Which of the following is not true of Mendel's experiment?
Karolina [17]

I believe it is B. Green pods are recessive.

5 0
3 years ago
Electrochemistry - Equilibrium
Ipatiy [6.2K]

Answer:

Explanation:

The relation between equilibrium constant and Ecell is given below .

E⁰cell = (RT / nF ) lnK  , F is faraday constant T is 273 + 25 = 298 K

E⁰cell  =  1.46 - 1.21 = .25 V

n = 2

Putting the values

.25 = (8.314 x 298  lnK) / (2 x 96485 )

lnK = 19.47

K = 2.85 x 10⁸

2 )

Change in free energy Δ G

Δ G ⁰ = nE⁰ F

n = 4

E⁰ = .4 + .83 = 1.23 V

Δ G ⁰= 4 x 1.23 x 96485

= 474706 J / mol

3 )

E⁰cell = (RT / nF ) lnK

n = 2

1.78 = 8.314 x 298  lnK / 2 x 96485

lnK = 138.638

K = 1.62 x 10⁶⁰

8 0
3 years ago
What is the water vapor density maximum at 30 ᵒC? *
riadik2000 [5.3K]

2.3 mol/1000L

Explanation:

relative humidity (rh)is the ratio of the partial pressure of water at a given temprature

8 0
3 years ago
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