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Sveta_85 [38]
3 years ago
13

A pesticide is used to kill crops in a field. A scientist wants to learn how the pesticide is affecting the plants and animals n

ear the field. Which procedure would be most useful? measuring the radioactivity of a sample of untreated pesticide introducing a radioactive tracer to common compounds in the soil subjecting the pesticide to neutron activation analysis introducing a radioactive tracer into a sample of pesticide
Chemistry
1 answer:
Nezavi [6.7K]3 years ago
8 0

Answer:

introducing a radioactive tracer into a sample of pesticide

Explanation:

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Which gas will effuse at the rate closest At a particular pressure and temperature, nitrogen gas effuses at the rate of 79mLs. U
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Answer : The rate of effusion of sulfur dioxide gas is 52 mL/s.

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According to the Graham's law, the rate of effusion of gas is inversely proportional to the square root of the molar mass of gas.

R\propto \sqrt{\frac{1}{M}}

or,

(\frac{R_1}{R_2})=\sqrt{\frac{M_2}{M_1}}       ..........(1)

where,

R_1 = rate of effusion of nitrogen gas = 79mL/s

R_2 = rate of effusion of sulfur dioxide gas = ?

M_1 = molar mass of nitrogen gas  = 28 g/mole

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Now put all the given values in the above formula 1, we get:

(\frac{79mL/s}{R_2})=\sqrt{\frac{64g/mole}{28g/mole}}

R_2=52mL/s

Therefore, the rate of effusion of sulfur dioxide gas is 52 mL/s.

4 0
3 years ago
Which of these items best describes the arrangement of electrons in an atom of sulfur? A. Eight electrons in its first energy le
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6 0
2 years ago
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6. A box measures 11.25 inches in length, 8.1 inches in width and 6.85 inches in height. What is the
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I'd say 624.2^3 inches.

Explanation:

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When water reaches the metastable state, the phase of water will be?​
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water, when the metastable state is reached, is cooled below the zero temperature. It freezes abruptly. this is called metastable. They are not at equilibrium per se; as at negative temperatures the only equilibrium state of water is ice.

Explanation:

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The melting point of aluminum is about 660 °C. How many degrees above the boiling point of water is this temperature?
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