3 years ago

Which is the least likely result of selective breeding

Chemistry

1 answer:

MAXImum [283]3 years ago

6 0

Correct answer is C.
But this is a biology question.

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A. amplitude<br> B. frequency<br> C. pitch<br> D. speed

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What is the question!

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It takes 2,267 joules of heat to raise the temperature of a 44.5 gram sample of a metal from 33.9°C to 288.3°C. What is the heat

ehidna [41]

Answer:

$\boxed{\text{0.200 J$^{\circ}$C$^{-1}$g$^{-1}$}}}$

Explanation:

The formula for the amount heat q absorbed by a substance is

q = mcΔT

where

m = the mass of the substance

C = the specific heat capacity of the material

ΔT = the temperature change

Data:

q = 2267 J

m = 44.5 g

T₁ = 33.9 °C

T₂ = 288.3 °C

Calculations:

ΔT = (288.3 - 33.9) °C = 254.4 °C

$\begin{array}{rcl}2267 & = & 44.5 \times C \times 254.4\\2267 & = & 11 180C\\C& = & \dfrac{2267}{11180}\\\\& = & \textbf{0.200 J$^{\circ}$C$^{-1}$g$^{-1}$}\\\end{array}$

$\text{The specific heat capacity of the metal is \boxed{\textbf{0.200 J$^{\circ}$C$^{-1}$g$^{-1}$}}}$

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3 years ago

Mention one metal that doesn't burn or form oxide when heated in air

Kitty [74]

Answer:

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2 years ago

Which of the following is not an end product of fractional distillation? A. Crude petroleum B. Asphalt C. Heating oil D. Kerosen

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In the following choices, all of the above are an end product of fractional distillation except for one. The ones that are the end product of fractional distillation are, asphalt, heating oil and kerosene. Crude petroleum is not an end product of fractional distillation, so the correct answer is letter A.

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