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2 years ago

If oxygen is removed from a sample of air as iron nusts, what happens to the partial pressure of oxygen in the air?

Chemistry

1 answer:

trasher [3.6K]2 years ago

3 0

Answer:

It increases because the less oxygen the more pressure there will be on that specific object

Explanation:

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What is the density of water if you have 50.0 grams of water and a volume of 50.0 millimeters

Gnom [1K]

Answer:

$\boxed {\tt 1.0 \ g/mL}$

Explanation:

Density can be found by dividing the mass by the volume.

$d=\frac{m}{v}$

The mass of the water is 50.0 grams.

The volume of the water is 50.0 milliliters.

$m= 50.0\ g \\v=50.0 \ mL$

Substitute the values into the formula.

$d=\frac{50.0 \ g}{50.0 \ mL}$

Divide.

$d= 1.0 \ g/mL$

The density of the water is 1.0 grams per milliliter. Also, remember that the density of pure water is always 1.0 g/mL or g/cm³

8 0

2 years ago

How are mass and volumes alike?

AlladinOne [14]

Kind of this is probably wrong Mass weight of solid, volume weight of liquid?

3 0

3 years ago

During resperation______.

Vikki [24]

D. oxygen is used to break down glucose into energy

Explanation:

During respiration, oxygen is used to break down glucose into energy:

C₆H₁₂O₆ + O₂ → CO₂ + H₂O + energy

In the process of respiration, oxygen gas combines with glucose to liberate energy.

Respiratory system in the body is responsible for the metabolic break down of food to provide energy for the working of the human body.
Chemical energy in glucose is broken down to produce other forms of energy most especially heat.
The by product is usually carbon dioxide and water vapor.

Learn more:

Respiration brainly.com/question/3447259

#learnwithBrainly

4 0

3 years ago

Which electron configuration of the 4f energy sublevel is most stable?

umka21 [38]

Answer: both options A and D

Explanation:

Half filled and completely filled orbitals are more stable than any other configuration since they are more symmetrical and energy exchange Occurs readily.

So 4f^7& 4f^14 are more stable

7 0

2 years ago

3) Calculate the percent by mass of 3.55 g NaCl dissolved in 88 g water.

kotykmax [81]

Answer:

The percent by mass of 3.55 g NaCl dissolved in 88 g water is 3.88%

Explanation:

When a solute dissolves in a solvent, the mass of the resulting solution is a sum of the mass of the solute and the solvent.

A percentage is a way of expressing a quantity as a fraction of 100. In this case, the percentage by mass of a solution is the number of grams of solute per 100 grams of solution and can be represented mathematically as:

$Percent by mass=\frac{mass of solute}{mass of solution} *100$

In this way it allows to precisely establish the concentration of solutions and express them in terms of percentages.

In this case:

mass of solute: 3.55 g
mass of solution: 3.55 g + 88 g= 91.55 g

Replacing:

$Percentbymass=\frac{3.55}{91.55}*100$

Percent by mass= 3.88%

<u><em>The percent by mass of 3.55 g NaCl dissolved in 88 g water is 3.88%</em></u>

5 0

3 years ago