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Fynjy0 [20]
3 years ago
11

Which discovery is most directly related to careers in biology?

Chemistry
1 answer:
Nookie1986 [14]3 years ago
5 0
Molecular and Microbiology 
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How is the weathering of rocks by water different from the weathering of rocks by ice?
ehidna [41]

Answer:

The formation of ice can also break rocks. If water gets into a crack in a rock and then freezes, it expands and pushes the crack further apart. When the ice melts later, water can get further into the crack. When the water freezes, it expands and makes the crack even bigger.

Explanation:

6 0
3 years ago
If the rock is tossed in the ocean, will it’s mass change?
Y_Kistochka [10]

Answer:

no

Explanation:

if it hits the ocean it either floats or sinks depends what type of rock your tossing is it flat or is it not???

8 0
3 years ago
The diagram shows a food web,
Assoli18 [71]

Answer:

the fox population would increase

Explanation:

i think it would probably increase because there would be more food for the foxes to eat which would allow the foxes to grow in numbers

8 0
3 years ago
Which formation is a result of a hot spot?
polet [3.4K]
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4 0
3 years ago
Read 2 more answers
alculate the standard enthalpy of formation of ethanoic acid given that the standard enthalpy of combustion for carbon is –394 k
agasfer [191]

Answer:

The standard enthalpy of formation of ethanoic acid is -484 kJ/mol.

Explanation:

C(g)+O_2(g)\rightarrow CO_2(g),\Delta H_{1, comb}=-394 kJ/mol...[1]

H_2(g)+\frac{1}{2}O_2(g)\rightarrow H_2O(l),\Delta H_{2, comb}=-286 kJ/mol..[2]

CH_3COOH(l)+2O_2(g)\rightarrow 2CO_2(g)+2H_2O(l),\Delta H_{3, comb}=-876 kJ/mol..[3]

The standard enthalpy of formation of ethanoic acid :

2C(g)+2H_2(g)+O_2(g)\rightarrow CH_3COOH, \Delta H_{4}=?..[4]

Using Hess's law to calculate :

2 × [1] + 2 × [2] - [3] = [4]

\Delta H_4=2\times (-394 kJ/mol)+2\times (-286 kJ/mol) - (-876 kJ/mol)

=\Delta H_4=-484 kJ/mol

The standard enthalpy of formation of ethanoic acid is -484 kJ/mol.

5 0
3 years ago
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