Using a Cricket as a Thermometer All chemical reactions, whether organic or inor

Question

Using a Cricket as a Thermometer All chemical reactions, whether organic or inorganic, proceed at a rate that depends on temperature-the higher the temperature, the higher the rate of reaction. This can be understood in terms of molecules moving with increased energy as the temperature is increased, and colliding with other molecules more frequently. In the case of organic reactions, the result is that metabolic processes speed up with increasing temperature. An increased or decreased metabolic rate can manifest itself in a number of ways. For example, a cricket trying to attract a mate chirps at a rate that depends on its overall rate of metabolism. As a result, the chirping rate of crickets depends directly on temperature. In fact, some people even use a pet cricket as a thermometer. The cricket that is most accurate as a thermometer is the snowy tree cricket (Oecanthus fultoni Walker). Its rate of chirping is described by the following formula: N = number of chirps per 13.0 seconds = T - 40.0 In this expression, T is the temperature in degrees Fahrenheit. Your per cricket chirps 117 times in one minute (60.0 s). What is the temperature in degrees Fahrenheit ? 42.0 47.3 65.4 82.9

Explanation / Answer

Number of chirps in 60 seconds = 117
Number of chirps in 1 second = 117/60 = 1.95
Number of chirps in 13 seconds, N = 1.95 x 13
= 25.35

Given that N = T - 40
T = N + 40
= 25.35 + 40
= 65.35
= 65.4 oF

Related Questions

Navigate

• Browse (All)
• Browse U
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.