1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
svet-max [94.6K]
3 years ago
13

Which choice best explains why a low-pressure system and a high-pressure system create different weather conditions?

Chemistry
1 answer:
RUDIKE [14]2 years ago
4 0

Answer:

D. In a low-pressure system, air sinks, creating fair weather. In a high-pressure system, air rises, creating storms.

Explanation:

Hope this helps :)

You might be interested in
Which substance is an example of a colloid?
Semmy [17]

Answer:

Milk would be the only colloid

The sand and water, tomato juice and sugar and water are all known as suspensions (It consists of large particles mixed or suspended in a solution)

Explanation:

8 0
3 years ago
Calculate the energy required to produce 6.0 moles of Cl2O7 using the following reaction 2 Cl2 + 7 O2 + 130kcal -> 2 Cl207
PilotLPTM [1.2K]

Answer:

455 Kcal

Explanation:

2Cl2(g) + 7O2(g) + 130kcal → 2Cl2O7(g)

Rearranging we get,

2Cl2(g) + 7O2(g)  → 2Cl2O7(g) Δ H = 130 kcal . mol⁻¹

So for per mol reaction will be as above.

In case of 7 mols of product, we need 7/2 mole ratio x 130 = 455 Kcal

5 0
2 years ago
Calculate the mass in grams of 1.72×10^24 molecules of formaldehyde. The chemical formula for formaldehyde is CH2O.
pishuonlain [190]

Answer: m= 85.8 g CH2O

Explanation: First step is convert the molecules of CH2O to moles using the Avogadro's Number.

1.72x10²⁴ molecules CH2O x 1 mole CH2O / 6.022x10²³ molecules CH2O

= 2.86 moles CH2O

Next is convert the moles of CH2O to mass using the molar mass of CH2O

2.86 moles CH2O x 30 g CH2O / 1 mole CH2O

= 85.8 g CH2O

5 0
3 years ago
Select the correct answer.
Artist 52 [7]
I think c cause if he is in a relationship that’s abusive he needs to speak up before it goes way worst.
3 0
3 years ago
The Doppler. Effect indicates that the universe is expanding because
GalinKa [24]

Answer : The correct answer is option C.

Explanation:

Astronomers have observed that light from the distant object in the universe is shifted towards the frequency of red color which indicates that those object are receding or moving away from the planet earth.This phenomena was termed as Red shift .Same thing goes for galaxies which are very far away from the planet earth.

Where as if galaxies were moving towards the the planet earth their light would have shifted toward the frequency of blue color termed as blue shift.

Hence, the correct answer is option C.

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which is FALSE regarding how elements with the same number of valence electrons will be similar?
    8·1 answer
  • a r. tank contains H. initially at 100 kn/m2 and 20°C. 1 1/2 kg of H added so that t2 and p of the tank is 30°C and 250 kpa, Det
    13·1 answer
  • What does the sign + mean in a chemical equation?
    5·2 answers
  • A sodium atom that has a mass number of 24
    6·1 answer
  • How would lava that comes out of a Strato volcano be described most accurately
    10·2 answers
  • In this lab experiment, you will react copper(II) chloride and aluminum. You will look for clues as to which substance was in ex
    8·2 answers
  • How much total energy must be absorbed by a 150 g sample of ice at 0.0°C that it melts
    6·1 answer
  • Which organ system coordinates the action of the body
    14·1 answer
  • Which of these objectives do you feel like you've accomplished so far?
    10·1 answer
  • I need to right a journal entry for school but i don't know what to put Write a journal entry from the perspective of a particle
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!