The place in the back of your eye that receives images is called the .retina,iris,cornea,pupil

The air at the top of Mount Everest has pressures of 201.0 torr N2, 50.0 torr O2, 2.0 torr Ar, and 0.5 torr CO2. What is the tot

nordsb [41]

Answer:

The total air pressure at the top of the highest peak in the world is 253.5 torr

Explanation:

The partial pressures of the gases present at the top of Mount Everest are;

Nitrogen, N₂ = 201.0 torr

Oxygen, O₂ = 50.0 torr

Argon, Ar = 2.0 torr

Carbon dioxide, CO₂ = 0.5 torr

By Dalton's law of partial pressure, the total pressure that a mixture of gases exerts is equal to the sum of the partial pressures of the individual gases

Mathematically, the law can be expressed as follows;

Total pressure, P = ∑P $_i$ = P₁ + P₂ + · · ·

From which we have;

The total air pressure at the top of the highest peak in the world, Mount Everest, $P_{Total Mont Everest}$ = The sum of the partial pressures of N₂, O₂, Ar, and CO₂

$P_{Total Mont Everest}$ = 201.0 torr + 50.0 torr + 2.0 torr + 0.5 torr = 253.5 torr

$P_{Total Mont Everest}$ = 253.5 torr = 0.33355263 atmosphere

Therefore, the total air pressure at the top of the highest peak in the world, $P_{Total Mont Everest}$ = 253.5 torr

3 0

3 years ago

S + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2O

lina2011 [118]

Answer:

43.5 moles of HNO₃.

Explanation:

The balanced equation for the reaction is given below:

S + 6HNO₃ —> H₂SO₄ + 6NO₂ + 2H₂O

From the balanced equation above,

6 moles of HNO₃ reacted to produce 2 moles of H₂O.

Finally, we shall determine the number of mole of HNO₃ required to produce 14.5 moles of H₂O.

This can be obtained as illustrated below:

From the balanced equation above,

6 moles of HNO₃ reacted to produce 2 moles of H₂O.

Therefore, Xmol of HNO₃ will react to produce 14.5 moles of H₂O i.e

Xmol of HNO₃ = (6 × 14.5)/2

Xmol of HNO₃ = 43.5 moles

Therefore, 43.5 moles of HNO₃ is required to produce 14.5 moles of H₂O.

7 0

3 years ago

Please help.

ser-zykov [4K]

Answer:

1. a series of steps 2. experiment

Explanation:

6 0

3 years ago

Why do some atoms form positive ions and others form negative ions?

kenny6666 [7]

It depends on the location on the periodic table and if it is easier to loose are gain electrons to fill the valence electron shell.

The electron affinity of the neutral atom of the element can show indicate whether or not the element is going the make positive or negative ions. The higher the electron affinity is, the more the neutral atom wants to gain electrons. The electron affinity for alkali metals and alkaline earth metals are low due to the fact that they are located on the left of the periodic table and only needs to loose 1 or 2 electrons to have a completed valence shell. That means that they want to form cations (loose electrons). Halogens have a high electron affinity since they are located on the right of the periodic table and only have to gain 1 electron to get a completed valence electron configuration. That means that it forms anions.

I hope this helps. Let me know if anything is unclear.

5 0

4 years ago

Read 2 more answers

3

Licemer1 [7]

Energy cannot be created nor destroyed, but it changes from one form to another. Hence, option C is correct.

<h3>What is energy?</h3>

Energy is the ability to do work.

In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time.

This law means that energy can neither be created nor destroyed; rather, it can only be transformed or transferred from one form to another.

Hence, option C is correct.

Learn more about energy here:

brainly.com/question/1932868

#SPJ1

5 0

2 years ago