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olchik [2.2K]
3 years ago
6

What is being cycled??

Chemistry
1 answer:
swat323 years ago
6 0
Water is constantly being cycled between the atmosphere, the ocean and land. This cycling is a very important process that helps sustain life on Earth. As the water evaporates, vapors rise, and condense into clouds. The clouds move over land, and precipitation falls in the form of rain, ice, or snow.
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BRAINLIEST GIVE AWAY! Please give the correct answer I will reward you with Brainliest!
harkovskaia [24]
Molar mass is the mass of each element multiplied by subscript, then added together.

So, we’ll do

C = 12g x 12 = 144 g
H = 1g x 22 = 22 g
O = 16g x 11 = 176 g

The total of all of these is the molar mass: 342 g in a mol

The amount of mols of each element in each compound is likely equal to its subscripts.

C = 12 mols
H = 22 mols
O = 11 mols

For the atoms, you’ll multiply each one of the above by Avogadro’s number

Avogadro’s Number: 6.02 x 10^23 atoms/mol


7 0
3 years ago
Calculate ΔHrxnΔHrxn for the following reaction: 3C(s)+4H2(g)→C3H8(l)3C(s)+4H2(g)→C3H8(l) Use the following reactions and given
mihalych1998 [28]

<u>Answer:</u> The \Delta H^o_{rxn} for the reaction is -120.9 kJ.

<u>Explanation:</u>

Hess’s law of constant heat summation states that the amount of heat absorbed or evolved in a given chemical equation remains the same whether the process occurs in one step or several steps.

According to this law, the chemical equation is treated as ordinary algebraic expressions and can be added or subtracted to yield the required equation. This means that the enthalpy change of the overall reaction is equal to the sum of the enthalpy changes of the intermediate reactions.

The given chemical reaction follows:

3C(s)+4H_2(g)\rightarrow C_3H_8(l)      \Delta H^o_{rxn}=?

The intermediate balanced chemical reaction are:

(1) C_3H_8(l)+5O_2(g)\rightarrow 3CO_2(g)+4H_2O(g)    \Delta H_1=-2026.6kJ

(2) C(s)+O_2(g)\rightarrow CO_2(g)     \Delta H_2=-393.5kJ     ( × 3)

(3) 2H_2(g)+O_2(g)\rightarrow 2H_2O(g)     \Delta H_2=-483.5kJ     ( × 2)

The expression for enthalpy of the reaction follows:

\Delta H^o_{rxn}=[1\times (-\Delta H_1)]+[3\times \Delta H_2]+[2\times \Delta H_3]

Putting values in above equation, we get:

\Delta H^o_{rxn}=[(1\times -(-2026.6))+(3\times (-393.5))+(2\times (-483.5))]=-120.9kJ

Hence, the \Delta H^o_{rxn} for the reaction is -120.9 kJ.

8 0
3 years ago
If I use warm water on my plants then they will grow faster as hot water increases metabolism this is an example of
Scorpion4ik [409]

Answer:

The options are

A. a hypothesis

B. a theory

C. a research question

D. a scientific explanation

The answer is A. a hypothesis

Explanation:

A hypothesis is referred to as a brief explanation on the occurrence of an event.

In the example above using of warm water on plants was inferred to make it grow faster as hot water increases the metabolism.

3 0
3 years ago
Which information best supports the idea that the universe began with rapid expansion?
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Bbbbb x sidisjeiiwkwnsiwowownsxjid i’m so sorry but i need help in this one class i’m trying to get answers to hope you understand
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3 years ago
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All matter has thermal energy because atoms are constantly
ololo11 [35]
The atoms are constantly in motion
3 0
3 years ago
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