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spayn [35]
3 years ago
8

What is the formula for calcium chloride

Physics
2 answers:
Naddik [55]3 years ago
6 0

The correct answer is - CaCl2

The calcium chloride is a salt, an inorganic compound. Its formula is CaCl2, with Ca being calcium, Cl being chloride, and the number 2 representing the number of chloride molecules.

The calcium chloride is a white colored crystalline solid when it is at room temperature, and it is highly soluble in water, acetone, and acetic acid. It has a molar mass of 110.98 g/mol, density of 2.15 g/cm³, and melting point at 772 °C.

Gnom [1K]3 years ago
4 0

the formula is CaC12

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Conversion fraction 1$=4q, how many are in 20$
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Answer:

\boxed{\sf 20 \$ = 80q}

Given:

1$ = 4q

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How many quarters are in 20$

Explanation:

To find out how many quarters are in 20$ we need to multiple 4 × 20.

\sf 1\$  = 4q

\sf  20\$  = 4 \times 20q

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adelina 88 [10]

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Using Rydberg's Equation:

\frac{1}{\lambda}=R_H\left(\frac{1}{n_i^2}-\frac{1}{n_f^2} \right )

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\lambda = Wavelength of radiation

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n_i= Lower energy level = 2

Putting the values, in above equation, we get:

\frac{1}{\lambda}=(10973731.6)\left(\frac{1}{2^2}-\frac{1}{3^2} \right )

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E=\frac{hc}{\lambda}

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h = Planck's constant = 6.626\times 10^{-34}Js

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Putting the values, in this formula, we get:

E=\frac{(6.626\times 10^{-34}Js)\times (3\times 10^8m/s)}{6.56\times 10^{-7}m}

E=3.03\times 10^{-19}J

Therefore, the energy of one photon of hydrogen atom is, 3.03\times 10^{-19}J

3 0
3 years ago
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