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DedPeter [7]
3 years ago
10

Give the formula and name for the iconic compounds formed from the following pairs of elements:

Chemistry
1 answer:
Fudgin [204]3 years ago
4 0

(1) Give the formula and name for the iconic compounds formed from the following pairs of elements:

A. KCl potassium chloride

B. ZnO zinc oxide

(2) Give the formula for each of the following ionic compounds:

A. KClO₃ potassium chlorate

B. MgSO₄ magnesium sulfate

C. KNO₃ potassium nitrate

(3) Give the name of the following covalent compounds:

A. SO₂ sulfur dioxide

B. CCl₄ carbon tetrachloride

C. SiS₂ silicon disulfide

D. SCl₂ sulfur dichloride

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Answer:

c

Explanation:

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If the velocity of a wave is 12 m/s and its frequency is 600 hertz, what would be its wavelength?
Black_prince [1.1K]

Answer:

<em>»</em><em> </em><em>λ </em><em>=</em><em> </em><em>0</em><em>.</em><em>0</em><em>2</em><em>m</em>

Explanation:

Given :

Velocity of the wave {v}= 12 m/s

Frequency {f} = 600 Hz

Apply Wavelength formula :

• λ =  \frac{v}{f}

→ λ = \frac{12}{600}

→ λ = \frac{1}{50}

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Answer:

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Calculate the solubility of mn(oh)2 in grams per liter when buffered at ph=7.0. assume that buffer capacity is not exhausted
Vanyuwa [196]
When PH + POH = 14 
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when POH = -㏒[OH-]

          7    = -㏒ [OH-]
∴[OH-] = 10^-7

by using ICE table:

           Mn(OH)2(s) ⇄  Mn2+ (aq)  + 2OH-(aq)
initial                              0                     10^-7
change                           +X                      +2X
Equ                                 X                  (10^-7 + 2X)

when Ksp = [Mn2+][OH-]^2

when Ksp of Mn(OH)2 = 4.6 x 10^-14

by substitution:

4.6 x 10^-14 = X*(10^-7+2X)^2  by solving this equation for X

∴ X =2.3 x 10-5 M

∴ The solubility of Mn(OH)2 in grams per liter (when the molar mass of Mn(OH)2 = 88.953 g/mol
= 2.3 x10^-5 moles/L * 88.953 g/mol

= 0.002 g/ L
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