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emmasim [6.3K]
3 years ago
8

How did scientists discover that all living things are made of cells?

Biology
1 answer:
ElenaW [278]3 years ago
3 0

Answer:

These observations led two German scientists, named Theodor Schwann and Matthias Jakob Schleiden, to propose that cells are the basic building blocks of all living things. Around 1850, a German doctor named Rudolf Virchow was studying cells under a microscope when he happened to see them dividing and forming new cells

Explanation:

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Mendel used
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2 years ago
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1. What is a two-dimensional model of the earth's surface called?
sertanlavr [38]

Answer:

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Explanation:

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During respiration, members of the animal kingdom use ______ and then release ______ as a waste gas
raketka [301]

During respiration, members of the animal kingdom use oxygen and then release carbon dioxide as a waste gas.

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3 years ago
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List the quantum numbers associated with all of the 5d orbitals
Whitepunk [10]

Answer:

Here's what I get  

Explanation:

If the orbital is 5d, n = 5 and l=2.

mₗ = -l, -l + 1, -l + 2,  …., l

(mₛ is a quantum number for electrons)

Thus, we can have the following combinations.

\begin{array}{ccr}\mathbf{n} & \mathbf{l} & \mathbf{m_{l}}\\5 & 2 & -2\\5 & 2 & -1\\5 & 2 & 0\\5 & 2 & 1\\5 & 2 & 2\\\end{array}

That makes a total of five 5d orbitals.

The pictures below show what two of them look like.

6 0
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