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Likurg_2 [28]
3 years ago
10

30. Cohesion, surface tension, and adhesion are the properties of water molecules that ________. A) increase when temperature in

creases B) increase when pH increases C) are a result of hydrogen bonding D) are a result of polar covalent bonding
Chemistry
1 answer:
RoseWind [281]3 years ago
5 0

Answer:

C) are a result of hydrogen bonding

Explanation:

Cohesion, surface tension, and adhesion are the properties of water molecules that <u>are a result of hydrogen bonding.</u>

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The element carbon continuously Cycles through an ecosystem. A simplified carbon cycle showing Step I, where organic molecules (
nikitadnepr [17]

Answer:

See the answer below

Explanation:

Organic molecules in the form of carbohydrates are created during photosynthesis or chemosynthesis and these processes cause carbon to be removed from the atmosphere or other environment into the biosphere - the living organisms of the ecosystem.

During photosynthesis, atmospheric carbon dioxide is fixed as carbohydrates into green plants in a two-stage process that requires sunlight energy and water. The entire process can be summarized as an equation below:

6CO_2 + 6H_2O + sunlight --> C_6H_1_2O_6 + 6O_2

Instead of using water as a reactant, chemosynthetic organisms make use of high energy chemicals such as hydrogen sulfide to fix carbon dioxide in order to generate carbohydrates.

CO_2 + 4H_2S + O_2 -> CH_20 + 4S + 3H_2O

Both processes ensure that carbon dioxide moves from the environment into living organisms.

8 0
3 years ago
A sample of propane (C3H8) has a mass of 0. 47 g. The sample is burned in a bomb calorimeter that has a mass of 1. 350 kg and a
Nady [450]

The amount of heat released by the sample has been 22.54 kJ. Thus, option C is correct.

The specific heat has been defined as the amount of heat required to raise the temperature of 1 gram of substance by 1 degree Celsius.

The specific heat has been expressed as:

q=mc\Delta T

<h3 /><h3>Computation for the heat absorbed</h3>

The iron and calorimeter are in side the closed system. Thus, the energy released by the sample, has been equivalent to the energy absorbed by the calorimeter.

q_{released}=q_{absorbed}\\&#10;q_{released}=m_{calorimeter}\;c_{calorimeter}\;\Delta T

The given mass of calorimeter has been, m_{calorimeter}=1350\;\rm g

The specific heat of the calorimeter has been, c_{calorimeter}=5.82\;\rm J/g^\circ C

The change in temperature of the calorimeter has been, \Delta T=2.87^\circ \rm C

Substituting the values for heat released:

q_{released}= 1350\;\text g\;\times\;5.82\;\text J/\text g^\circ \text C\;\times\;2.87^\circ \text C\\&#10;q_{released}=22,549.5\;\text J\\&#10;q_{released}}=22.54\;\rm kJ

The amount of heat released by the sample has been 22.54 kJ. Thus, option C is correct.

Learn more about specific heat, here:

brainly.com/question/2094845

6 0
3 years ago
Sound waves are mechanical waves in which the particles in the medium vibrate in a direction parallel to the direction of energy
Marat540 [252]
Longitudinal wave is the another name.
3 0
4 years ago
explain why it is a common laboratory procedure to heat analytical reagents and store them in a dessicated atmosphere (a sealed
Readme [11.4K]

Explanation:

Most reagent forms are going to absorb water from the air; they're called "hygroscopic".  Water presence can have a drastic impact on the experiment being performed  For fact, it increases the reagent's molecular weight, meaning that anything involving a very specific molarity (the amount of molecules in the final solution) will not function properly.

Heating will help to eliminate water, although some chemicals don't react well to heat, so it shouldn't be used for all.  A dessicated environment is simply a means to  "dry."  That allows the reagent with little water in the air to attach with.

6 0
3 years ago
¿En qué ecosistema de Puerto Rico abunda más el pez Mero?
Sphinxa [80]

Answer:

Mostly abundant Coral reef ecosystem

Explanation:

We know that,

There are 7 ecosystem in puerto rico but the grouper fisher such as nassau grouper is one of them that present in coral reef ecosystem.

Nassau grouper fish is one of the grouper fish that present in puerto rico island. It is now announced as danger in the US, and as risk by the International Union for Conservation of Nature.

Hence, Coral reef ecosystem is the most abundant in Puerto Rico

3 0
4 years ago
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