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natka813 [3]
3 years ago
12

What two bodies systems work together to deliver oxygen to cells

Chemistry
2 answers:
makvit [3.9K]3 years ago
8 0
Respiratory systems and circulatory systems work together to deliver oxygen to cells
lawyer [7]3 years ago
7 0
Circulatory and respiratory
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How many grams of Ca(OH)2 are needed to produce 500 mL of 2.99 M Ca(OH)2 solution? 1L=1000mL
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Answer:

74 g/mol

Explanation:

Using a periodic table, we can determine the molar mass by adding together 1 Ca, 2 O, and 2 H. This turns out to be approximately (40+32+2) = 74 g/mol

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Tom pushes on a 50-kilogram box with a force of 25 newtons. Assuming the surface on which the box moves is frictionless, at what
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Assuming the surface on which the box moves is frictionless, the rate at which the box accelerate is equal to 0.5 m/s^2.

<u>Given the following data:</u>

  • Mass of box = 50 kilogram
  • Force = 25 newtons.

To determine the rate at which the box accelerate, assuming the surface on which the box moves is frictionless:

Mathematically, Newton's Second Law of Motion is given by the formula;

Force = mass \times acceleration

Making acceleration the subject of formula, we have:

Acceleration =\frac{Force}{mass}

Substituting the given parameters into the formula, we have;

Acceleration = \frac{25}{50}

Acceleration = 0.5 m/s^2

Read more on Newton's Law of Motion here: brainly.com/question/1121817

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2 years ago
__________ solutions are very unstable.
Serhud [2]

Answer:

none of the above

Explanation:

because all of them are unstable

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How does reducing the temperature of chemical reaction affect the rate at which it occurs?
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When you lower the temperature, the molecules are slower and collide less. That temperature drop lowers the rate of the reaction. When you increase the pressure, the molecules have less space in which they can move. That greater density of molecules increases the number of collisions.

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