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NikAS [45]
3 years ago
12

Number the events from earliest (1) to most recent (6) to outline the development of the cell theory. Anton van Leeuwenhoek obse

rved small organisms he called “animalcules.” Robert Hooke was the first to use the word “cell.” Matthias Schleiden theorized that plants are made of cells. Theodor Schwann theorized that animals are made of cells. Hans and Zacharias Janssen created the first microscope. Rudolf Virchow theorized that cells come from other pre-existing cels
Chemistry
2 answers:
Ne4ueva [31]3 years ago
4 0
I agree with the answer she provided
adelina 88 [10]3 years ago
3 0

1.Hans and Zacharias Janssen created the first microscope.

2.Robert Hooke was the first to use the word “cell.”

3.Anton van Leeuwenhoek observed small organisms he called “animalcules.”

4.Matthias Schleiden theorized that plants are made of cells.

5.Theodor Schwann theorized that animals are made of cells.

6.Rudolf Virchow theorized that cells come from other pre-existing cells.

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Helppp ASAP Don’t GUESSSSS
Sever21 [200]

I'm gonna go ahead and guess, and say its B.

8 0
3 years ago
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1.00 L of a gas at STP is compressed to 473mL. What is the new pressure of gas?
Ratling [72]

Hello!

1.00 L of a gas at STP is compressed to 473 mL. What is the new pressure of gas?

  • <u><em>We have the following data:</em></u>

Vo (initial volume) = 1.00 L  

V (final volume) = 473 mL → 0.473 L  

Po (initial pressure) = 1 atm (pressure exerted by the atmosphere - in STP)  

P (final pressure) = ? (in atm)

  • <u><em>We have an isothermal transformation, that is, its temperature remains constant, if the volume of the gas in the container decreases, so its pressure increases. Applying the data to the equation Boyle-Mariotte, we have:</em></u>

P_0*V_0 = P*V

1*1 = P*0.473

1 = 0.473\:P

0.473\:P = 1

P = \dfrac{1}{0.473}

\boxed{\boxed{P \approx 2.11\:atm}}\:\:\:\:\:\:\bf\green{\checkmark}

<u><em>Answer:  </em></u>

<u><em>The new pressure of the gas is 2.11 atm  </em></u>

___________________________________

\bf\blue{I\:Hope\:this\:helps,\:greetings ...\:Dexteright02!}\:\:\ddot{\smile}

3 0
3 years ago
Which polymer structure should be used if a strong and heat - resistant adhesive is required?
alexira [117]

Cross-linked polymers are strong and heat - resistant hence they can be used for this purpose.

A polymer is obtained by the combination of small molecules called monomers. A polymer consists of a regular repeating unit of small molecules called monomers.

A cross-linked polymer is a polymer in which covalent bonds are used to join polymer chains together. Cross-linked polymers are strong and heat - resistant hence they can be used for this purpose.

Learn more: brainly.com/question/17638582

3 0
3 years ago
A mixture consists of 28% oxygen, 14% hydrogen, and 58% nitrogen by volume. A sample of this mixture has a pressure of 4.0 atm i
stepladder [879]

Answer:

C) 1.3 mol

Explanation:

Using gas law we can find the initial moles of the sample of the mixture, as follows:

PV = nRT

PV / RT = n

<em>Where P is pressure: 4.0atm</em>

<em>V is volume: 9.6L</em>

<em>R is gas constant: 0.082atmL/molK</em>

<em>T is absolute temperature: 300K</em>

<em>And n are moles of the gas</em>

<em />

PV / RT = n

4.0atm*9.6L / 0.082atmL/molK300K = n

n = 1.56moles of the mixture of the gas are present into the 9.6L container

Now, 14% of this gas is hydrogen that was removed of the system, that is:

1.56mol*14% = 0.22 moles of hydrogen are removed.

Thus, moles of gas that remains in the container are:

1.56mol - 0.22mol = 1.34mol.

Right answer is:

<h3>C) 1.3 mol</h3>

6 0
3 years ago
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As a cooking method, braising is valued for its A. ability to retain flavor. B. quickness and convenience. C. simplicity and ver
LiRa [457]

Answer:

i belevie its A

Explanation:

took the test

7 0
3 years ago
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