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2 years ago

Which of these statements best explains why the soil around a volcanic region is fertile?

Chemistry

2 answers:

Troyanec [42]2 years ago

8 0

Answer: b. Volcanoes aid in the formation of new rocks, which help form new soils.

Explanation:

Volcanic eruption is a natural phenomena which involves the expulsion of hot magma and gases from the earth geosphere with drastic explosion due to generation of heat and pressure by the hot mantle. The hot magma get solidify on the surface of earth crust and becomes rocks. These rocks contains many inorganic minerals. If these rocks wither into soil can support the growth of plants because of the presence of the minerals.

Temka [501]2 years ago

4 0

Answer:

C. Particles released in the air by volcanoes fall to the ground and enrich the soil.

Explanation:

Got it right on the quiz

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What is the correct formula for Heptarsenic Tetrabromide

harina [27]

Hepta is seven and tetra is four, so option c is your answer

3 0

3 years ago

When a paper towel absorbs water, is it a physical or chemical change?

Nonamiya [84]

Answer:

It is a physical change.

Explanation:

6 0

2 years ago

12. What is the volume of 0.07 mol of neon gas at STP?

scoundrel [369]

<h3>Answer:</h3>

2 L Ne

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<u>Chemistry</u>

<u>Atomic Structure</u>

Using Dimensional Analysis
STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 K

<h3>Explanation:</h3>

<u>Step 1: Define</u>

0.07 mol Ne (g)

<u>Step 2: Identify Conversions</u>

STP - 22.4 L per mole

<u>Step 3: Convert</u>

Set up: $\displaystyle 0.07 \ mol \ Ne(\frac{22.4 \ L \ Ne}{1 \ mol \ Ne})$
Multiply: $\displaystyle 1.568 \ L \ Ne$

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 1 sig fig.</em>

1.568 L Ne ≈ 2 L Ne

7 0

2 years ago

3mL of cyclohexanol (density = 0.9624 g/mL, Molecular weight = 100.158 g/mol) reacts with excess sulfuric acid to produce cycloh

TiliK225 [7]

Answer:

$n_{C_6H_{10}}=0.03molC_6H_{10}$

Explanation:

Hello,

In this case the undergoing chemical reaction is shown on the attached picture whereas cyclohexanol is converted into cyclohexene and water by the dehydrating effect of the sulfuric acid. Thus, for the starting 3 mL of cyclohexanol, the following stoichiometric proportional factor is applied in order to find the theoretical yield of cyclohexene in moles:

$n_{C_6H_{10}}=3mLC_6H_{12}O*\frac{0.9624gC_6H_{12}O}{1mLC_6H_{12}O}*\frac{1molC_6H_{12}O}{100.158gC_6H_{12}O}*\frac{1molC_6H_{10}}{1molC_6H_{12}O} \\n_{C_6H_{10}}=0.03molC_6H_{10}$