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3 years ago

Which correctly lists three characteristics that are used to describe air?

2 answers:

8 0

Answer: density, Omass, radiation, pressure because Radiation pressure is the mechanical pressure exerted upon any surface . Small bodies are more affected than large ones because of their lower mass relative to their surface area formed by the radiation pressure of the young stars reduces the cluster mass enough to allow rapid dispersal.

Explanation: I Hope that helped!!!

vodomira [7]3 years ago

3 0

mass, pressure, density

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If the temperature is kept constant, what change in volume would cause the pressure of an enclosed gas to be reduced to one-th

joja [24]

Using the ideal gas equation pV = nRT, where R is the ideal gas constant, we can show that p=nRT/V. Since n, R and T are all constants, p2/p1 = V1/V2 where p1 and p2 are the start and final pressures respectively and V1 and V2 are the start and final volumes respectively. For if p1 = 3*p2, the pressure would have fallen to one third of its original value, and it follows that V2 = 3*V1. Therefore, for the pressure to fall to a third of its original value, the volume must increase by a factor of 3.

3 0

3 years ago

Write the step by step process of digestion in ruminants using 4 square method.

Vaselesa [24]

The digestion process in Ruminants begins by chewing and swallowing their food.

<h3>What are ruminants?</h3>

A ruminant is any herbivorous animal that has a stomach with four compartments, which are tasked with acquiring nutrients from plant-based food by fermenting it prior to digestion.

The digestion process in Ruminants begins by chewing and swallowing their food. Ruminants do not completely chew the food they eat, but just consume or gulp as much they can and then swallow the food. This is actually an adaptation by which these animals have evolved to spend as little time as possible feeding so that they are not hunted down by any predators while they are eating.

As mentioned earlier, the stomach of these Ruminants is divided into 4 chambers – rumen, reticulum, omasum, and the abomasum.

The process of digestion begins with the first two chambers of the stomach, the rumen and reticulum by softening the ingested matter. Later the microbes present in the rumen produces the cellulase enzymes required to digest the cellulose.

Once the plant fibres have been broken down to provide vitamins, proteins, and other organic acids, the nutrients are absorbed into the animal’s bloodstream.

Coarse plants are sent further into the next chamber for further digestion. Here is where the further bacterial action takes place and the food is formed into soft chunks called the cud.

This cud produced is regurgitated back into the animal’s mouth where it can be chewed again. The saliva of the cow greatly aids in digesting the cud.

After chewing, the food bypasses the two chambers of the stomach and directly enters the third chamber. The walls of the third chamber mash and compact the food molecules further, and then pass it to the fourth chamber – the abomasum.

The final digestion in the stomach is carried by the abomasum and then passed to the intestine.

Learn more about the ruminants here:

brainly.com/question/26752412

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3 0

2 years ago

How many molecules are there in 0.75 mol NH3

vitfil [10]

3 *0.75 = 2.25 mol that’s is ur answer for this question

4 0

3 years ago

Someone help me plz :))) brainliest

SOVA2 [1]

Answer:

Option 2

Explanation:

3 0

3 years ago

The active ingredient in aspirin is acetylsalicylic acid (MW = 180.2 g/mol). An aspirin tablet was dissolved in

Mashcka [7]

Answer:

1214 mg

Explanation:

Data given

Volume of NaOH solution (V) = 14.85 mL

Molarity of NaOH solution (M) = 0.100 M NaOH.

Amount of acetylsalicylic acid = ?

Molecular weight = 180.2 g/mol

Solution:

It is a acid base titration

As equal amount of NaOH will neutralize equal amount of acetylsalicylic acid.

First find the moles of NaOH

As we know

M = moles of solute / 1 L x volume of solution

Rearrange and modify the above equation

moles of NaOH = M of NaOH x 1 L / volume of NaOH solution

Put values in above equation

moles of NaOH = 0.100 M x 1 L / 14.85 mL

moles of NaOH = 0.0067 moles

Now find to find the weight of acetylsalicylic acid

equal amount of NaOH will neutralize equal amount of acetylsalicylic acid.

moles of acetylsalicylic acid = moles of NaOH.......... (1)

As we know

no. of moles = mass in g / molar mass

So,

The modified form of equation 1 will be

mass in g / molar mass (acetylsalicylic acid) = moles of NaOH

Put values in above equation

mass in g / 180.2 g/mol = 0.0067 moles

Rearrange the above equation

mass of acetylsalicylic acid = 0.0067 moles x 180.2 g/mol

mass of acetylsalicylic acid = 1.214 g

Convert the grams to milligrams

1 g = 1000 milligram

So,

1.214 g = 1214 mg

5 0

4 years ago