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muminat
3 years ago
6

Find the no of moles of ca in 8g of ca​

Chemistry
1 answer:
Tom [10]3 years ago
4 0

Answer:

Thus,there are 0.2 mole in 8 g of calcium.

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QUICK 34PTS AND IF RIGHT YOU WILL GET BRAINLEST
bazaltina [42]

Answer:

1-b 2-a

Explanation:

3 0
3 years ago
Based on lewis structure analysis, what is the formal charge of the central atom in clf3
MArishka [77]
Formal Charge is calculated as, Lewis structure is attached below,

Formal Charge  =  [# of valence electrons] - [electrons in lone pairs + 1/2 the                                     number of bonding electrons]

# of valence electrons of Cl  = 7

electrons in lone pairs  =  4

number of bonding electrons  =  6

Formal Charge  =  [7] - [4 + 6/2]

Formal Charge  =  [7] - [4 + 3]

Formal Charge  =  [7] - [7]

Formal Charge  =  0

Result:
           Formal charge on Cl in ClF₃ is zero.

4 0
3 years ago
A photon of light has an energy of 1.83 x 10-18). What is the wavelength of this light? Does this light fall in the IR, visible,
Scrat [10]

Answer:

1.09 × 10⁻⁷ m

UV region

Explanation:

Step 1: Given and required data

Energy of the photon of light (E): 1.83 × 10⁻¹⁸ J

Planck's constant (h): 6.63 × 10⁻³⁴ J.s

Speed of light (c): 3.00 × 10⁸ m/s

Step 2: Calculate the wavelength (λ) of this photon of light

We will use the Planck-Einstein's relation.

E = h × c/λ

λ = h × c/E

λ = 6.63 × 10⁻³⁴ J.s × (3.00 × 10⁸ m/s)/1.83 × 10⁻¹⁸ J = 1.09 × 10⁻⁷ m

This wavelenght falls in the UV region of the electromagnetic spectrum.

4 0
3 years ago
If electrons were used in the two-slit experiment instead of light, what change would need to be made to the slit spacing in ord
Andrei [34K]
In order to conduct the two-slit experiment with a beam of electrons, the slit opening has to be smaller than the opening for the light waves. This is because the wavelength of the electron beam is lower, which means it will pass through the large slit without diffracting. Diffraction will occur if the spacing is reduced. The reason that electrons have a smaller wavelength is because they have a higher energy than light waves.
5 0
3 years ago
23994Pu + 10n → BCBa + 9138Sr + 3 10n
mihalych1998 [28]

Answer:

A

Explanation:

7 0
3 years ago
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