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2 years ago

In which environment would primary succession take place? Select 2 options.

Chemistry

2 answers:

kotegsom [21]2 years ago

7 0

Answer:

a cooling lava flow

a deserted mine

Explanation:

kumpel [21]2 years ago

7 0

Answer:

an abandoned field, a cooling lava flow, a valley under a glacier, and an unused farm

Explanation:

Primary succession happens in a place where there is no soil cover or it is removed.

an abandoned field- Secondary; because there is cover of soil left, even if vegetation is removed.

a cooling lava flow- Primary; volcanic events lead to loss of soil layer, so this would lead to primary succession

a valley under a glacier- Primary; retreating glaciers are lead to primary succession

an unused farm-Secondary; the soil cover is still present

a burnt forest- Secondary; soil cover is still left for vegetation to start over again

a deserted mine- Primary; because there would be barren rocks left, so soil would be formed by pioneer species first.

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The standard cell potential (E°cell) for the reaction below is +0.63 V. The cell potential for this reaction is ________ V when

Natasha_Volkova [10]

Answer: 0.52V

Explanation:

Ecell = Ecell(standard) - [(0.0592 logQ)/n]

Q = product of the quotient

n = no of electrons transferred = 2

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3 years ago

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3 years ago

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2 years ago

The following animals is an endotherm? A. grasshopper B.horse C.lizard D.snake

adoni [48]

Answer:

snake

Explanation:

4 0

3 years ago

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

3 years ago