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3 years ago

What travels through a food chain or web.

2 answers:

7 0

A food chain contains a producer and 3 consumers. Primary Consumers (East producers) the arrows in a food chain show the flow of energy, from the sun or hydrothermal vent your a top predator.

enyata [817]3 years ago

5 0

Energy - a typical food web will start with an energy source (the sun), travel to plants and then along the food chain.

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((Please help asap! Giving brainliest))

astraxan [27]

i hope this helped!

7 0

4 years ago

Read 2 more answers

Calculate the theoretical density (in g/cm3) of copper (Cu), given that it has the FCC structure. The atomic weight of Cu is 63.

sasho [114]

Answer:

8.937g/cm³

Explanation:

To answer this question we need to know that, in 1 unit FCC cell you have:

Edge length = √8 * R

Volume = 8√8 * R³

And there are 4 atoms per unit cell

Mass of 4 atoms in g:

4 atom * (1mol / 6.022x10²³atom) * (63.55g / mol) = 4.221x10⁻²²g

Volume in cm³:

0.1278nm * (1x10⁻⁷cm / 1nm) = 1.278x10⁻⁸cm

Volume = 8√8 * (1.278x10⁻⁸cm)³

Volume = 4.723x10⁻²³cm³

And density is:

4.221x10⁻²²g / 4.723x10⁻²³cm³ =

6 0

4 years ago

The reactants of two chemical equations are listed.

Oksi-84 [34.3K]

Answer:

Equation 2, because K being more reactive, exchanges position with Pb in PbNO3.

Explanation:

3 0

3 years ago

What energy change occurs during condensation? Please answer, i’ll give you brainliest !

kupik [55]

Answer:

Please see Explanation and Attachment (Heating Curve for Water)

Explanation:

Energy change associated with phase change in substances is either endothermic (energy added to system) or exothermic (energy removed from system). Condensation is but one term in six (6) describing phase change occurring when energy change is involved. The following table, in general, summarizes the related effects of energy change as applied to phase change.

Process Phase Change Energy Change*

Condensation gas => liquid Exothermic

Evaporation liquid => gas Endothermic

Freezing liquid => solid Exothermic

Melting solid => liquid Endothermic

Sublimation solid => gas Endothermic

Deposition gas => solid Exothermic

_____________________

* Energy Change terms:

Endothermic => Addition of heat energy

Exothermic => Removal of heat energy

7 0

3 years ago

Which of the following equations represents a double-displacement reaction?

const2013 [10]

The answer is C. Zn(s) + H2SO4(aq) ZnSO4(aq) + H2(g)

4 0

3 years ago