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Anuta_ua [19.1K]
3 years ago
13

What happens when air moves from an area of high pressure to an area of low pressure?

Chemistry
2 answers:
tino4ka555 [31]3 years ago
8 0

Answer: The answer is D. wind is created. :)

salantis [7]3 years ago
8 0

Answer:

D

Explanation:

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Calculate ΔH for the reaction: C(graphite) + 2H 2(g) + 1/2 O 2(g) => CH 3OH(l) Using the following information: C(graphite) +
Alika [10]

Answer:

\Delta H for the given reaction is -238.7 kJ

Explanation:

The given reaction can be written as summation of three elementary steps such as:

C(graphite)+O_{2}(g)\rightarrow CO_{2}(g) \Delta H_{1}= -393.5 kJ

2H_{2}(g)+O_{2}(g)\rightarrow 2H_{2}O(l) \Delta H_{2}= (2\times -285.8)kJ

CO_{2}(g)+2H_{2}O(l)\rightarrow CH_{3}OH(l)+\frac{3}{2}O_{2}(g)  \Delta H_{3}= 726.4 kJ

---------------------------------------------------------------------------------------------------

C(graphite)+2H_{2}(g)+\frac{1}{2}O_{2}(g)\rightarrow CH_{3}OH(l)

\Delta H=\Delta H_{1}+\Delta H_{2}+\Delta H_{3}=-238.7 kJ

4 0
3 years ago
Bomb calorimeters are often used to determine the amount of energy stored in foods. You can find the molar enthalpy of combustio
marta [7]
Butter is made of milk, which is made of several things. To do calculations with bomb calorimetry, we often need the number of moles of the substance that we’re using. Since we can’t just say “moles of milk”, it’s not on a table.
7 0
2 years ago
What are the advantages of having only one SI unit for pressure?
Vanyuwa [196]
<span>www.science.uwaterloo.ca/~cchieh/cact/c120/siunits.html</span>
8 0
2 years ago
Aniline, consists of carbon, hydrogen, and nitrogen. Combustion of this yields CO2, H20, and N2 as products. If the combustion o
ikadub [295]

The empirical formula : C. C₁₆H₁₅N₂

<h3>Further explanation</h3>

Given

12.5 g of aniline

7.1 grams of H2O

1.48 grams of N2

Required

The empirical formula

Solution

Reaction :

mass H in H₂O :

= 2.1/18 x 7.1 g

= 0.79

mass N = 1.48

mass C :

= 12.5 g-(mass H+mass N)

= 12.5 - (0.79+1.48)

= 10.23

Mol ratio C : H : N =

= 10.23/12 : 0.79/1 : 1.48/14

= 0.853 : 0.79 : 0.106

= 8 : 7.5 : 1

= 16 : 15 : 2

5 0
3 years ago
Is most of the bacteria on your body harmful?
TiliK225 [7]

Answer:

No it is not, most bacteria is very helpful, it helps the body function and fight off diseases when the body is sick. Sometimes the good bacteria can't fight off the bad bacteria and will cause you to have to buy antibiotics. The antibiotics give the body a huge advantage at fighting off the disease and the body goes back to normal.

7 0
3 years ago
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