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2 years ago

Give two examples. How does predation affect an ecosystem?

Chemistry

2 answers:

Gnom [1K]2 years ago

8 0

Answer:

It affects the amount of a species that may be hunted by said predator, controlled you can say.

It can cause evolution in prey that causes them to not be caught, Darwins theory in a way.

Explanation:

nevsk [136]2 years ago

6 0

Explanation:

At the level of the community, predation reduces the number of individuals in the prey population. The best example of predation involve carnivorous interactions, in which one animal consumes another, Think of wolves hunting moose, owls hunting mice, or shrews hunting worms and insects.

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How many atoms are present in 179.0 g of iridium?

posledela

160 atoms are present

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3 years ago

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What relationship exists between the mass number of an element and the isotopes of that element?

labwork [276]

The mass number plays an important role for elements and their isotopes. Mass number comes from the addition of protons and neutrons (their weight). Isotopes are the elements, but with a different number of neutrons. So in turn, by subtracting the number of protons (atomic number) from the mass, you can find the number of neutrons.

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3 years ago

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What is the molarity of a solution composed of 5.85 g of potassium iodide, KI, dissolved

Troyanec [42]

Answer:

0.282 M

General Formulas and Concepts:

Chemistry - Solutions

Reading a Periodic Table
Using Dimensional Analysis
Molarity = moles of solute / liters of solution

Explanation:

Step 1: Define

5.85 g KI

0.125 L

Step 2: Identify Conversions

Molar Mass of K - 39.10 g/mol

Molar Mass of I - 126.90 g/mol

Molar Mass of KI - 39.10 + 126.90 = 166 g/mol

Step 3: Convert

$5.85 \ g \ KI(\frac{1 \ mol \ KI}{166 \ g \ KI} )$ = 0.035241 mol KI

Step 4: Find Molarity

M = 0.035241 mol KI / 0.125 L

M = 0.281928

Step 5: Check

We are given 3 sig figs. Follow sig fig rules and round.

0.281928 M ≈ 0.282 M

7 0

2 years ago

True or false, The ideal gas lead allows us to figure out a fourth variable about a gas when the other 3 are given

klemol [59]

Answer:

true

Explanation:

PV=nRT

The ideal gas law states that PV = NkT, where P is the absolute pressure of a gas, V is the volume it occupies, N is the number of atoms and molecules in the gas, and T is its absolute temperature. The constant R is called the Boltzmann constant

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2 years ago

A rapidly falling object at a high altitude has _____

alisha [4.7K]

A. high potential energy and zero kinetic energy.

7 0

3 years ago