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bonufazy [111]
3 years ago
13

One liter of air contains about 0.21 L of oxygen. When filled, the human lungs hold about 6.0 L of air. How much oxygen is in th

e lungs when they are filled with air? (Round off to the nearest hundredths place.)
Chemistry
1 answer:
Pie3 years ago
3 0
Simple 6L of air times the .21L of O2 = 1.26

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Ionic bonds form as a result of the electrostatic attraction between
Andrews [41]

Answer:

Ions

Explanation:

Ionic bonds are formed when an element loses electrons (usually a metal), and other elements gain these electrons(usually a nonmetal or the hydrogen). When the element loses electrons, it becomes a cation, an ion with a positive charge; and when the element gains electrons it becomes an anion, an ion with a negative charge.

The charge in the ions produces an electrostatic attraction between them, and that attraction is the force that gets them together in a bond.

8 0
3 years ago
In the density of a liquid activity, the graph had an intercept. If you were to make a similar graph using metal blocks, would t
Alex17521 [72]

Answer:

NO

Explanation:

<u>It would be difficult to plot a line of best fit on the scattered graph of the activities of metal blocks as the activities would almost be the same horizontally on the graph</u> and an attempt to draw/determine an intercept will be almost impossible.  The line of best fit is usually drawn to determine the relatedness/correlation of the variables.

Drawing intercept for the activities of the liquid is easier because a line of best fit can be easily placed between the clustered liquid activities on the scattered plot.

8 0
4 years ago
A bell hanging at the top of a tower has 8,550 j of energy. If it has a mass of 20 kg find the height of the Bell
kogti [31]

43.62m

Explanation:

Given parameters:

Energy = 8550J

Mass of bell = 20kg

Unknown:

Height of the bell = ?

Solution:

As this state, the bell possesses potential energy. Potential energy is the energy at rest in a body. It is due to the position of the body.

  Potential energy = m g h

m is the mass of the body

g is the acceleration due to gravity of the body

h is the height of the body

The unknown is h and we should solve for it.

  g = 9.8m/s²

     Input the variables;

        8550 = 20  x  9.8 x h

     h = 43.62m

learn more:

Potential energy brainly.com/question/10770261

#learnwithBrainly

3 0
3 years ago
Which particles can be stopped by human skin? ) alpha and beta particles only alpha particles alpha and gamma particles beta and
Helga [31]
Alpha and Beta particles can be stopped by our skin. Gamma particles cannot be stopped by our skin.
7 0
3 years ago
Read 2 more answers
Water molecules are polar, with the Select one:
shusha [124]

Answer:

b. oxygen side being slightly negative and the hydrogen side being slightly positive.

Explanation:

The water molecule is a polar molecule, that is to say that its distribution of electronic density is different throughout the molecule.

In this way, in the water molecule there is a negative partial charge towards the oxygen atom and a positive partial charge towards the hydrogen atom.

This polar characteristic of the water molecule allows ions and other molecules to exhibit water solubility and is widely used in chemical reactions.

3 0
3 years ago
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