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loris [4]
3 years ago
15

An animal that backs on a warm rock during the morning hours but retreats to the shade of the rocks during the middle of the day

is mostly likely a (n)
A. ectotherm

B. endotherm

C. vertebrate

D. chordate
Chemistry
1 answer:
Nuetrik [128]3 years ago
7 0
It should be A since it needs external source of heat to thrive 

while endotherm can produce it's own preferable heat. 
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Which is composed of alkenes? welding torch fuel polystyrene cups propane gas degreaser containing hexane
Sindrei [870]

Answer:

welding torch fuel  

Explanation:

Alkenes are chemical compounds formed by a carbon atom and a hydrogen atom. They have an open chain with double bonds between two carbon acts. They are widely used in the composition of fuels, such as welding torch fuel and have as main characteristics the solubility in solvents, the insolubility in water, high melting and boiling point and the absence of colors.

4 0
3 years ago
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Rainforests are not generally considered a source of _______.
schepotkina [342]

Rainforests are not generally considered a source of none of the above choices. You can get food from Rainforests, and also spices and medicines. In fact, Rainforests have a variety of plants that have medicinal properties. When you know how to find the right plant in the rainforests, you can access almost everything.

<h2>Hence, your answer is D. None of the above</h2>

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Thanks!

Answered by: FieryAnswererGT

#learnwithbrainly

8 0
2 years ago
What are properties or characteristics shared by Metalloids and Nonmetals?
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Nonmetals have properties opposite those of the metals. The nonmetals are brittle, not malleable or ductile, poor conductors of both heat and electricity, and tend to gain electrons in chemical reactions. Some nonmetals are liquids. These elements are shown in the following figure.
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3 years ago
How does the smell of food being cooked spread so fast ???
sladkih [1.3K]

Answer:

When we cook food in the kitchen, that's the region of higher concentration of the smell. By diffusion, the smell spreads to the whole room and thereby whole house, so anyone standing at a distance, can smell it.

5 0
3 years ago
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a chemist dissolved an 11.9-g sample of koh in 100.0 grams of water in a coffee cup calorimeter. when she did so, the water temp
Snowcat [4.5K]

The heat of solution is -51.8 kJ/mol

<h3>What is the heat of solution?</h3>

We know that in a calorimeter, there is no loss or gain of energy. It is a good example of a closed system.

Number of moles of KOH =  11.9-g/56 g/mol = 0.21 moles

Temperature rise = 26.0 ∘c

Mass of the water = 100.0 grams

Heat capacity =  4.184 j/g⋅°c

Then;

ΔH = mcθ

ΔH = 100g * 4.184 j/g⋅°c * 26.0 ∘c = 10.88 kJ

Heat of solution = -(10.88 kJ/ 0.21 moles) = -51.8 kJ/mol

Learn more about heat of solution:brainly.com/question/24243878

#SPJ1

4 0
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