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Wewaii [24]
3 years ago
14

The simplest formula is obtained by dividing the ______ of each element by the _______. 1. number of moles of each element; numb

er of moles of product 2. number of moles; smaller number of moles 3. number of moles; larger number of moles 4. grams of each element; total mass of the product
Chemistry
1 answer:
alexandr402 [8]3 years ago
7 0

Answer:

2. Number of moles ; smaller number of moles

Explanation:

The simplest formula also called the empirical formula is the ratio of moles to the number of smaller moles which is obtained by simply dividing the number moles with the number of smaller moles

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A sample of milk kept at 25 °C is found to sour 40 times as rapidly as when it is kept at 4 °C. Estimate the activation energy f
irga5000 [103]

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

K_2 = rate constant at 4^oC = k

Ea = activation energy for the reaction = ?

R = gas constant = 8.314 J/mole.K

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

T_2 = final temperature = 4^oC=273+4=277 K

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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3 years ago
3. What do we call atoms of the same elements with different mass numbers?
Talja [164]

Answer:

Isotopes

Explanation:

We call atoms of the same elements with different mass numbers isotopes.

7 0
3 years ago
Foods that are basic can be identified by what taste
xz_007 [3.2K]

Answer:

Foods that are basic can be identified by its bitter taste. Option C

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Reset the simulation again. Set the ruler at 50 and the left platform at 20. Don't add any molecules yet. Predict what will happ
zimovet [89]

Answer:

The conversion of substance A to substance B will happen extremely slowly because of the very high activation energy that each molecule must obtain to convert.

Explanation:

Plato answer

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How much energy is released if a sample loses 0.001 kg mass through radioactive decay?
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Explanation:

because the energy it can't be calculated

4 0
2 years ago
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