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2 years ago

How does the appearance of the protist differ from that of the onion sample?

1 answer:

8 0

The appearance of the protist differ from that of the onion sample due to the presence of motile structures.

<h3>What is a Protist?</h3>

This is an eukaryote which could be unicellular or multicellular and examples include protozoa etc.

The major difference between a protist and onion sample is that protists have motile structures such as flagella, cilia etc while plant cells such as onions don't have.

Read more about Protist here brainly.com/question/2169979

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If the density of D-2 diesel fuel is 55.0 lb/ft3, what is the mass of fuel in kilograms when a tank with volume 19.7 is full?

DaniilM [7]

Answer:24.9

Explanation:

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3 years ago

What are the parts of the earths mantle? A) Inner core, asthensophere, lithosphere

In-s [12.5K]

Answer:

Explanation:

The mantle is composed of the mesosphere and the asthenosphere in the upper most part and in the crust is the lithosphere

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3 years ago

Define acid and base according to lewis theory, arrhenius theory and lawn theory

WITCHER [35]

Answer:

Three principal theories about acid-base are,

1. Arrhenius theory

2. Bronsted-Lowry theory

3. Lux-Flood definition

4. Lewis theory

5. Usanovich definition

1. According to the Arrhenius, acids give up hydrogen ion in aqueous medium and a base give up hydroxyl ion in its aqueous medium. Examples are aqueous solution of HCl, CH3COOH, PhCOOH, and H2SO4. These give up H+ in an aqueous medium. Aqueous solutions of NaOH, Ca (OH)2 are Arrhenius bases.

Arrhenius theory has some limitations. This theory cannot explain the acidic nature of BF3 or basic behavior of NH3. This theory fails to give any explanation about acidity and basicity which does not produce H+ and OH- in their aqueous solutions.

2. According to the Bronsted-Lowry, an acid releases proton and a base accepts proton. NH3 accepts proton and forms ammonium ion, so ammonia acts as a base.

But this theory also has limitations. According to this theory acidic behavior of BF3 still cannot be explained.

3. Lux-Flood describes the acid-base theories based on oxide ion transformation. It gives clear explanation for acid-bases theories of non-protonic system. According to them, a base will donate the oxygen atom and an acid will accept oxygen atom.

4. According to the Lewis theory, acids are those substances which accept electron pair and base are those substances which donates electron pairs. Lewis theory can explain the acidic nature of BF3. In BF3, B is two electrons short to fulfil its octet. So it can accept a pair of electrons from an electron donating substituent. So it is an electron pair acceptor compound and acts as an acid.

Substances which have π electrons can donate electron pair to an electron deficient substance and acts as a base. Ethylene and acetylene is Lewis bases. AlCl3, PCl3 are Lewis acids.

5. According Usanovich, an acid is some chemical species which would react with bases and yields cations or accepts anions or electrons. A base is some chemical species which would react with acids, yield anions or electrons or combine with cations.

Explanation:

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2 years ago

Read 2 more answers

A gas with a volume of 8 L at a temperature of 473K is switched to a new container with a temperature of 350K. If the pressure r

Digiron [165]

Answer:

The new volume is 5.92 L, which is approximately 6 L

Explanation:

As the gas temperature increases, the molecules move faster and take less time to reach the walls of the container. This means that the number of crashes per unit of time will be greater. That is, there will be an increase (for an instant) in the pressure inside the container and the volume will increase.

So Charles's Law is one of the gas laws that relates the volume and temperature of a certain amount of gas at constant pressure and says that:

If the temperature increases the volume increases

If the temperature decreases the volume decreases

Mathematically this is expressed by:

$\frac{V}{T}=k$

When you want to study two different states, an initial and a final one of a gas, this law is expressed by:

$\frac{V1}{T1} =\frac{V2}{T2}$

In this case:

V1: 8 L
T1: 473 K
V2: ?
T2: 350 K

Replacing:

$\frac{8 L}{473K} =\frac{V2}{350K}$

Solving:

$V2=350K*\frac{8L}{473K}$

V2=5.92 L

<u><em>The new volume is 5.92 L, which is approximately 6 L</em></u>

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3 years ago

Which of these is a harmful interaction

Naddika [18.5K]

Answer:The five major types of species interactions, summarized in Figure 10, are competition, predation, parasitism, mutualism, and commensalism.

Explanation:

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3 years ago