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Life on Earth is based on carbon, likely because each carbon atom can form bonds with up to four other atoms simultaneously. This quality makes carbon well-suited to form the long chains of molecules that serve as the basis for life as we know it, such as proteins and DNA.
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Answer:
I, II
Explanation:
The circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.
Answer:
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The three ways thermal energy is transferred are;
1) Conduction
2) Convection
3) Radiation
Explanation:
1) The conduction of the heat from the open flame to the marshmallow is through the direct contact of the flame with the marshmallow, such that the flame the region of the combustion reaction, that produces light and heat touches the marshmallow
2) The convection process is the transfer of heat from the rising heated combustion products, as well as the heated air that rises from the flame
3) The radiation heat transfer is the transfer of the heat from the fire to the marshmallows directly by the heat the moves in the form of electromagnetic waves at temperatures above 1000 K, without the need for a medium, such that the marshmallow can be heated by the heat coming from side of the flame.
Volume (in mL) is 1.61 ml would you need to dilute 35.0 mL of a 1.30 M solution of KBr to make a 0.0600 M solution of KBr
Dilute is to make a liquid weaker by mixing in something else
The volume or concentration of the concentrated or dilute solution can be determined by using the equation:
M₁ V₁ = M₂ V₂
Here given data is
M₁ = 1.30 M
M₂ = 0.0600 M
V₂ = 35.0 mL
V₁ =?
Then substitute this value
M₁ V₁ = M₂ V₂
1.30 M×V₁ = 0.0600 M×35.0 mL
V₁ = 1.61 ml
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