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lyudmila [28]
3 years ago
15

Molecules that contain nothing but hydrogen and carbon are

Chemistry
1 answer:
romanna [79]3 years ago
4 0
Hydrocarbons. They usually burn. In fact, I can't think of one that does not.
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How many molecules are there in 8.00 grams of glucose, C6H12O6
beks73 [17]

Answer:

molecules C6H12O6 = 2.674 E22 molecules.

Explanation:

from periodic table:

⇒ molecular mass C6H12O6 = ((6)(12.011)) + ((12)(1.008)) + ((6)(15.999))

⇒ Mw C6H12O6 = 180.156 g/mol

⇒ mol C6H12O6 = (8.00 g)(mol/180.156 g) = 0.0444 mol C6H12O6

∴ mol ≡ 6.022 E23 molecules

⇒ molecules C6H12O6 = (0.0444 mol)(6.022 E23 molecules/mol)

⇒ molecules C6H12O6 = 2.674 E22 molecules

6 0
3 years ago
4. Given the chemical formulas of the following compounds, name each compound and state the rules you used to determine each nam
earnstyle [38]
I honestly dont even kno
3 0
3 years ago
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Compared to a 1.0-liter aqueous solution with a pH of 7.0, a 1.0-liter aqueous solution with a pH of 5.0 contains
grin007 [14]

Answer:

2. 100 times more hydroxide ions,

Explanation:

Acidity and alkalinity are measured with a logarithmic scale called pH. Each one-unit change in the pH scale corresponds to a ten-fold change in hydrogen ion concentration. Therefore, a 1.0 liter aqueous solution with a pH of 5.0 contains 100 times more hydronium ions than a 1.0 liter aqueous solution with a pH of 7.0

5 0
3 years ago
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Make a claim about why scientists might have two ways for thinking about Earth's layers. Summarize evidence to support the claim
amid [387]

Answer:

Direct evidence from rock samples and indirect evidence from seismic waves may account for why scientists have two ways of thinking about earth's layers

Explanation:

Scientists who study about the earth's structure and components called geologists have two main types of evidence to learn about Earth's interior namely

1. direct evidence from rock samples

2. indirect evidence from seismic waves

Direct evidence From Rock Samples

Scientists examine rocks from inside the Earth and these rocks give them clues about Earth’s structure. Some scientists have drilled holes as much as 12 kilometers into Earth and bring up samples of rock. From these samples, they can make inferences about conditions deep inside Earth, where these rocks formed. In addition, forces inside Earth sometimes blast rock to the surface from depths of more than 100 kilometers. These rocks from deep within the Earth provide more information about the interior.

Indirect evidence From Seismic Waves

Since scientist cannot look inside Earth, they have devised an indirect methods of observation by using seismic waves. When earthquakes occur, they produce seismic waves. Scientists record the seismic waves and study how they travel through Earth. The speed of seismic waves and the paths they take reveal the structure of the planet. Using data from seismic waves, scientists have learned that Earth’s interior is made up of several layers with each layer surrounding the layers beneath it.

6 0
3 years ago
The population size of panda
zhenek [66]

Answer:

it will decrease because there will not be food for all of them and there is very little space for them now so if there is more they will start to fight

Explanation:

there is very little habitat left for panda bears so if there population increases the food and space with be filed

7 0
3 years ago
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