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Nesterboy [21]
3 years ago
12

A food web shows (2 points)

Chemistry
1 answer:
Oxana [17]3 years ago
7 0
4.) That species may have more than one source of food.
5.) Secondary consumers eat herbivores.
6.) A food chain shows how energy is transferred.
7.) A tapeworm is an example of parasitism.
8.) Commensalism is the relationship where one is happy and the other is not harmed nor benefited.
9.) Both contribute to each other so it's mutualism.
10.) The plants grow in trees and steal from them, this is parasitism.
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How many moles are 1.20 x 1025 formula units of calcium iodide?
madam [21]

Answer:

19.9 mol

Explanation:

Use <em>Avogadro’s number</em> to convert formula units of CaI₂ to moles of CaI₂.

1 mol CaI₂ ≡ 6.022 × 10²³ formula units CaI₂

Moles of CaI₂ = 1.20 × 10²⁵ × (1 /6.022 × 10²³)

Moles of CaI₂ = 19.9 mol

6 0
3 years ago
Logan is cooking, and he wants to increase the boiling point of the water. Which solute would not be a good choice as it would n
Mars2501 [29]
Sugar would not increase the boiling point of the water as much as the others.To show this, we recall the equation for boiling point elevation ∆t:  
     ∆t = i Kb m 

The difference in these four solutions will be in the product of the van't Hoff Factor i and molality m: i * m. 

If we assume that we have 0.1m of each solute, the products i*m for these solutions are:
     
     Solution                      Identity of particles                          i      i * m
        0.1 m NaCl                 Na+, Cl-                                         2     2 * 0.1 = 0.2
        0.1 m MgSO4             Mg^2+, SO4^2-                            2     2 * 0.1 = 0.2
        0.1 m K2SO4              two K+, SO4^2-                           3     3 * 0.1 = 0.3
        0.1 m C12H22O11      covalently bonded molecules     1     1 * 0.1 = 0.1

Therefore, having the lowest  i * m, sucrose will have the lowest boiling point elevation.
8 0
3 years ago
What distinguishes science from other disciplines that do not use scientific methods?
rewona [7]

Correct Answer: A. Science relies on observation, measurement, and experimentation.

4 0
3 years ago
Which of th following is an example of how scientist might use a model?
Gemiola [76]
C. marbles placed inside hollow sphere
8 0
3 years ago
To find the number of atoms look at the number known as the________. Please help.
Rufina [12.5K]

Answer:

molar mass or AMU

Explanation:

4 0
2 years ago
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