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2 years ago

How are breathing and cellular respiration related? (15 points if answered)

2 answers:

7 0

Cellular respiration is not the same thing as breathing, but they are closely related. When you breathe in, you take in the When you breathe in, you take in the oxygen your cells need for cellular respiration. When you breathe out, you get rid of the carbon dioxide that your cells produce during cellular respiration

(hope this helps ^^)

never [62]2 years ago

4 0

Answer:

When you breathe in, you take in the oxygen your cells need for cellular respiration. When you breathe out, you get rid of the carbon dioxide that your cells produce during cellular respiration.

Explanation:

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A chemist dilutes 185 of the 3.0 M solution with water until a new volume of 750 is obtained. Calculate the new concentration

svlad2 [7]

Answer:

0.74M

Explanation:

Step 1 :

Data obtained from the question.

Initial concentration (C1) = 3M

Initial volume (V2) = 185mL

Final volume (V2) = 750mL

Final concentration (C2) =..?

Step 2:

Determination of the new concentration of the solution.

The new concentration of the solution can be obtained by using the dilution formula as shown below:

C1V1 = C2V2

3 x 185 = C2 x 750

Divide both side by 750

C2 = 3 x 185 / 750

C2 = 0.74M

Therefore, the new concentration of the solution is 0.74M

7 0

3 years ago

Which is the correct formula for phosphorus pentachloride? PCl4 because a subscript of 4 indicates four Cl atoms PCl5 because a

Arlecino [84]

Answer: The correct formula for phosphorous pentachloride is $PCl_5$ because a subscript 5 indicates five chlorine (Cl) atoms.

Explanation: For the given molecule, phosphorous pentachloride, there are 2 atoms present which are phosphorous and chlorine atoms.

Number of phosphorous atoms = 1

Number of chlorine atoms = 5

So, the correct formula for phosphorous pentachloride will be $PCl_5$ because the subscript 5 represents the 5 chlorine atoms.

7 0

3 years ago

Read 2 more answers

How many electrons are transferred between the cation and anion to form the ionic bond in one formula unit of each compound? (1

kodGreya [7K]

The number of transferred electrons to form the ionic bond in one formula unit of each compound is as below

NaCl = 1 electron

CaS = 2 electrons

BaO= 2 electrons

KBr=1 electrons

LIF = 1 electron

explanation

ionic bond is formed between a metal and a nonmetal . This bond is formed when electron are transferred between cation and anion. To know how many electrons transferred you look the oxidation state of the metal.

for example

in NaCl only one electrons is transferred since Na is in oxidation state of +1. Na donate the one electron to Cl to form an ionic bond. Ba is in oxidation state of 2+ and hence it donate the two electrons to O to form ionic bond.

4 0

3 years ago

What is the best reason for the difference in properties of LiCL and C6H14O

statuscvo [17]

The substances have different atomic masses, one is organic and one is inorganic, and Cl and Oxygen belong to different groups. There are more differences but these are the most basic ones.

7 0

3 years ago

A brick has a mass of and the Earth has a mass of . Use this information to answer the questions below. Be sure your answers hav

weeeeeb [17]

The given question is incomplete. The complete question is:

A brick has a mass of 4.0 kg and the earth has a mass of $6.0\times 10^{27}g$ Use this information to answer the questions below. Be sure your answers have the correct number of significant digits. What is the mass of 1 mole of bricks? Round your answer to 2 significant digits. How many moles of bricks have a mass equal to the mass of the Earth? Round your answer to 2 significant digits.

Answer: The mass of 1 mole of bricks is $2.4\times 10^{27}g$

2.5 moles of bricks have a mass equal to the mass of the Earth

Explanation:

According to avogadro's law, 1 mole of every substance weighs equal to its molecular mass and contains avogadro's number $6.023\times 10^{23}$ of particles.

Mass of 1 brick = 4.0 kg = 4000 g (1kg=1000g)

Thus mass of 1 mole of brick or $6.023\times 10^{23}$ bricks will be = $\frac{4000g}{1}\times 6.023\times 10^{23}=2.4\times 10^{27}g$

The mass of 1 mole of bricks is $2.4\times 10^{27}g$

Now $2.4\times 10^{27}g$ will correspond to = 1 mole of bricks

$6.0\times 10^{27}g$ will correspond to = $\frac{1}{2.4\times 10^{27}}\times 6.0\times 10^{27}=2.5moles$

2.5 moles of bricks have a mass equal to the mass of the Earth

5 0

2 years ago