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3 years ago

5

Formule of the acido perbromico

1 answer:

CaHeK987 [17]3 years ago

4 0

The chemical formula for acido perbromico is HBrO4 or perbromic acid or bromate. It is an inorganic compound and an oxoacid of bromine. When an H+, the –ate ion is –ic acid: one less O is –ous acid, ttwo less is hypo- -ous acid and one more is per- -ic acid.

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A compound with the empirical formula ch2 has a molar mass of 98 g/mol what is the molecular formula for this compound ?

madam [21]

Approximate molecular masses:
Molecular mass of C = 12
Molecular mass of H = 1

Let n = moles required for CH₂.
Then
nCH₂ = 98
n(12 + 2*1) = 98
14n = 98
n = 7

Answer: The molecular formula is 7CH₂

7 0

3 years ago

The pre-exponential constant and activation energy for the diffusion of iron in cobalt are 1.7 x 10-5 m2/s and 273,300 J/mol, re

Kitty [74]

<u>Answer:</u> The temperature of the system will be 1622 K

<u>Explanation:</u>

The equation relating the pre-exponential factor and activation energy follows:

$\log D=\log D_o-\frac{E_a}{2.303RT}$

where,

D = diffusion coefficient = $2.7\times 10^{-14}m^2/s$

$D_o$ = pre-exponential constant = $1.7\times 10^{-5}m^2/s$

$E_a$ = activation energy of iron in cobalt = 273,300 J/mol

R = Gas constant = 8.314 J/mol.K

T = temperature = ?

Putting values in above equation, we get:

$\log (2.7\times 10^{-14})=\log (1.7\times 10^{-5})-\frac{273,300}{2.303\times 8.314\times T}\\\\T=1622K$

Hence, the temperature of the system will be 1622 K

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3 years ago

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Wewaii [24]

Explanation:

sulphur has a low melting point.

sulphur has a low boiling point thus it can be extracted by pumping hot water which turns it ito solution form

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2 years ago

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Anastaziya [24]

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Hence, a model that can adequately show something that happens very slowly is the model for the formation of mountains.

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4 years ago

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xxMikexx [17]

Answer:

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3 years ago

Read 2 more answers