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STatiana [176]
3 years ago
12

The first measurements of the sea depth was made in 1840 in the centra south of Atlantic, where a plummet was lowered 2425 fatho

ms. What is the depth in meters? Note 1 fathom=6ft, 1ft=12in, 1ft=2.54*10
Chemistry
1 answer:
larisa [96]3 years ago
4 0

Answer:

4435 m  

Explanation:

1. Number of feet

\text{No. of feet} = \text{2425 fathoms} \times \dfrac{\text{6 ft}}{\text{1 fathom}} = \text{14 550 ft}

2. Number of inches  

\text{No. of inches} = \text{14 550 ft} \times \dfrac{\text{12 in}}{\text{1 ft}} =\text{174 600 in}

3. No. of centimetres

\text{No. of centimetres} = \text{174 600 in} \times \dfrac{\text{1 cm}}{\text{2.54 in}} = \text{443 500 cm}

4. No. of metres

\text{No. of metres} = \text{443 500 cm} \times \dfrac{\text{1 m}}{\text{100 cm}} = \textbf{4435 m}

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Answer:

120.575 kJ is the activation energy for the souring process.

Explanation:

The formula for an activation energy is given as:

\log (\frac{K_2}{K_1})=\frac{Ea}{2.303\times R}[\frac{1}{T_1}-\frac{1}{T_2}]

where,

K_1 = rate constant at 25^oC = 40k

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T_1 = initial temperature = 25^oC=273+25=298 K

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Now put all the given values in this formula, we get:l

\log (\frac{k}{40k})=\frac{Ea}{2.303\times 8.314 J/mol K}[\frac{1}{298K}-\frac{1}{277 K}]

E_a=120,575.61J=120.575 kJ

120.575 kJ is the activation energy for the souring process.

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