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irga5000 [103]
2 years ago
14

How were noble gases discovered?

Chemistry
1 answer:
AURORKA [14]2 years ago
8 0

Answer:

Lord Rayleigh's observation that the density of nitrogen extracted from the air was always greater than nitrogen released from various chemical compounds.

Explanation:

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The organic compounds that are divided into two types, simple and complex, are called _____.
Sati [7]

The organic compounds that are divided into two types, simple and complex, are called carbohydrates.

Carbohydrates are diveded into twy types: simple and complex (starches, fiber, glycogen).

Simple carbohydrates are made of one (monosaccaharides) or two sugar units.

Complex carbohydrates are made up of many sugar units.

For example, glucose (C₆H₁₂O₆) is a simple carbohydrate.

Glucose is chemical compound composed of six carbon atoms, twelve hydrogen atoms and six oxygen atoms.

Starch is a polymeric carbohydrate consisting of a large number of glucose units bonded by glycosidic bond. Starch is a white, tasteless and odorless powder that is insoluble in cold water or alcohol.

More about carbohydrates: brainly.com/question/20290845

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6 0
2 years ago
Which statement supports one of Dalton's contributions to the atomic theory?
Mnenie [13.5K]
<span>C) The element nitrogen is made up of carbon and nitrogen</span>
6 0
3 years ago
Read 2 more answers
If one iron nail weighs 2.0 grams, what would be the mass of 6.022 x 10^23 nails?
Maru [420]

Answer:

1.2x10^{24}g

Explanation:

Hello!

In this case, it is possible to treat this problem by using a proportional factor which indicates one iron nail equals 2.0 grams:

\frac{2.00g}{1nail}

Now, for an amount of 6.022x10²³ nails, the corresponding mass will be:

6.022x10^{23}nail*\frac{2.00g}{1nail} \\\\1.2x10^{24}g

Best regards!

8 0
2 years ago
Assume that Na+ is being transported across a membrane via facilitated diffusion. Which of the following conditions would allow
lesya [120]

Answer:

<h2>4. Na+ diffusing toward the side of the membrane with Cl− and 50% less Na+.</h2>

Explanation:

Facilitated diffusion is a type of transport mechanism in which the special proteins are involved and play an important role in the transport of the atoms, ions or molecules. This mechanism is based on the electrochemical gradient differences. When this difference increase, then the transport of the sodium takes place because sodium ions are chemically attracted by chloride ions. In a facilitated diffusion process, no energy requirement takes place. This process occurs along the concentration gradient.

3 0
3 years ago
Someone plz hello me ASAP it would be appreciated on question 9 btw
aleksandrvk [35]

Answer:

its either A or C

Explanation:

i know B is not the answer

4 0
3 years ago
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