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kiruha [24]
3 years ago
11

Magnesium metal burns in air with an intense bright light according to the equation

Chemistry
1 answer:
lubasha [3.4K]3 years ago
5 0

The heat produced by 4.5 moles of magnesium when burnt is 2700 kJ.

A thermochemical reaction is a reaction in which the amount of heat lost or gained is included in the reaction equation. The thermochemical reaction equation for the combustion of magnesium is shown as follows;

2 Mg(s) + O2(g) → 2 MgO(s) + 1200 kJ

From the reaction equation;

2 moles of magnesium produced 1200 kJ of heat

4.5 moles of magnesium will produce 4.5 moles × 1200 kJ/2 moles

= 2700 kJ

Learn more: brainly.com/question/14281129

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Answer:

The desirable characteristic of Barium suspension are:

<u>Thick layering</u>

<u></u>

Explanation:

First know the meaning of  the terms :

1. Rapid flow

2. Thick layering

3. Good mucosal adhesion\

1. Rapid flow : The lower the viscosity of the solution , more is its flow in the solution. For example : Honey has more viscosity so it flows slowly . On the other hand water flow faster.

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3. Mucosal Adhesion : It is the adhesion(attraction) between two materials ,one of which is mucous.It is attractive force between the drug and the mucus inside the body.

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<em>It is not a Good mucosal adhesion material because of low solubility in water and lipid .</em>

<em>Only those solution are good in adhesion which have higher solubility in water.</em>

It is widely used as the contrast media for the examination of gastrointestinal because of its <u>Thick Layering Property. It has the consistency of thick glass . At room temperature it is called "warm thick milk"</u>

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3 years ago
Sea level changes occur at a rate of 10 m per 1,000 years. Regional erosion occurs at a rate of 2 m per 1,000 years. Uplift occu
PtichkaEL [24]
<h3>Answer:</h3>

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<h3>Explanation:</h3>

To determine the process which is the fastest we need to determine the rate at which each occurs in meters per year.

Rate of sea level changes is 10 m per 1,000 years

Therefore, the rate of sea level change = 10 m ÷ 1000 years

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Therefore, Rate in meters per seconds = 2 m ÷ 1,000 years

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Thus, rate in meters per seconds = 0.1 m ÷ 1,000 years

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4 0
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