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4 years ago

A fast-moving wet slurry consisting of a mixture of water and volcaniclastic debris is termed a ________.

Chemistry

1 answer:

Soloha48 [4]4 years ago

6 0

Answer:

A fast-moving wet slurry consisting of a mixture of water and volcaniclastic debris is termed a lahar

Explanation:

A lahar is a debris flow or mud-flow that consists of a mixture of volcanic material, rock particles and water, flowing typically along a river valley down from a volcano

Lahars can be either from either pyroclastic flows or heavy rainfall after a volcanic eruption

Lahars are hazardous as they can result in destruction, severe damage destroying buildings and some times entire small towns are wiped out. This is more so as they move silently and very fast down to the valleys

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Here is a food chain in a meadow. Use this food chain to answer this question.

guajiro [1.7K]

D. Hawk

The highest trophic level in a food chain is often shown as literally being the highest in the diagram. Although this food chain is set up differently, you can still tell that the hawk is the highest trophic level because all the arrows point in its direction.

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4 years ago

Read 2 more answers

If 3.0 moles of hydrogen react, how many grams of nitrogen will be used? Round your answer to the nearest whole number. N2 + 3H2

Iteru [2.4K]

Answer:

28g

Explanation:

Given parameters:

Number of moles of hydrogen = 3moles

Unknown:

Mass of nitrogen used = ?

Solution:

To solve this problem, let us establish the balanced reaction equation first;

N₂ + 3H₂ → 2NH₃

From the balanced reaction equation;

3 mole of H₂ will combine with 1 mole of N₂

Now,

Mass of Nitrogen = number of moles x molar mass

Molar mass of N₂ = 2(14) = 28g/mol

Mass of Nitrogen = 1 mole x 28g/mole = 28g

8 0

3 years ago

A Question 2 (2 points) Retake question

Ksivusya [100]

Answer:

3.3765 Mol O2

Explanation:

There is no work for this problem

3 0

3 years ago

Is PCl3 ionic or covalent?

mote1985 [20]

Answer:

covalent

Explanation:

P and Cl are non-metals, so bonds between P and Cl are covalent.

8 0

4 years ago

Ethers are almost always used as solvents for Grignard reactions, all of the reasons why they work so well are not fully underst

vfiekz [6]

Answer:

Ether is used as a solvent because it is aprotic and can solvate the magnesium ion.

Explanation:

Solubility in Water

Because ethers are polar, they are more soluble in water than alkanes of a similar molecular weight. The slight solubility of ethers in water results from hydrogen bonds between the hydrogen atoms of water molecules and the lone pair electrons of the oxygen atom of ether molecules.

Ethers as Solvents

Ethers such as diethyl ether dissolve a wide range of polar and nonpolar organic compounds. Nonpolar compounds are generally more soluble in diethyl ether than alcohols because ethers do not have a hydrogen bonding network that must be broken up to dissolve the solute. Because diethyl ether has a moderate dipole moment, polar substances dissolve readily in it.

Ethers are aprotic. Thus, basic substances, such as Grignard reagents, can be prepared in diethyl ether or tetrahydrofuran. These ethers solvate the magnesium ion, which is coordinated to the lone pair electrons of diethyl ether or THF. Figure attached, shows the solvation of a Grignard reagent with dietheyl ether.

The lone pair electrons of an ether also stabilize electron deficient species such as BF3 and borane (BH3). For example, the borane-THF complex is used in the hydroboration of alkenes (Section 1

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4 years ago