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miv72 [106K]
3 years ago
15

What is the difference between the small and large intestines?

Chemistry
1 answer:
nalin [4]3 years ago
3 0
Ggggggggggggggggggggggggggggggggggggggg
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80 liters of oxygen is collected over water at 50.0 degrees Celsius. The atmospheric pressure during the collection was 96.00 kp
vlabodo [156]

Answer:

The value of partial pressure of oxygen P_{O_{2} } = 83.66 K pa

Explanation:

Volume of oxygen = 80 liters

Temperature = 50°c

The total pressure = 96 K pa

The partial pressure of water at 50°c is calculated from the tables.

P_{H_{2}O } = 12.344 K pa

The total pressure is given by

P_{total} = P_{H_{2}O } + P_{O_{2} }

Put all the values in the above equation we get

96 = 12.344 + P_{O_{2} }

P_{O_{2} } = 96 - 12.344

P_{O_{2} } = 83.66 K pa

This is the value of partial pressure of oxygen.

3 0
4 years ago
What steps would you take in a lab to prepare 1000 mL of a 2 M NaCl solution
amm1812

Answer:

The answer to your question is below

Explanation:

Data

Volume = 1000 ml

Concentration = 2M

molecule = NaCl

Process

1.- Calculate the number of moles of NaCl

Molarity = moles/Volume

-Solve for volume

moles = Molarity x Volume (liters)

-Substitution

moles = 2 x 1

-Result

moles = 2

2.- Determine the molar mass of NaCl

NaCl = 23 + 35.5 = 58.5 g

3.- Calculate the mass of NaCl to prepare the solution

               58.5 g -----------------  1mol

                   x      -----------------  2 moles

                       x = (2 x 58.5) / 1

                       x = 117g

4.- Weight 117 g of NaCl, place them in a volumetric flask (1 l), and add enough water to prepare the solution.

7 0
4 years ago
CoSO₄ and Pb(NO₃)₂ are mixed in aqueous solution.
laila [671]

Answer:

See below.

Explanation:

<h3>CoSO4 + Pb(NO3) 2 = Co(NO3) 2 + PbSO4</h3>
3 0
3 years ago
What is the total number of atoms in a molecule of ch 3 oh?
algol13
Number of Atoms in Methanol are calculated as,

Write chemical formula of Methanol,

                                                      CH₃-OH

Find out Subscripts:
                                There is only one subscript (₃) written after Hydrogen, it means there are 3 Hydrogen atoms attached to Carbon atoms.

Add all atoms in molecule:
                                           Carbons  =   1
                                       Hydrogens  =   4
                                          Oxygens  =   1
                  Total Atoms                        ______
                          
                                                               6 Atoms
6 0
3 years ago
Read 2 more answers
If the density of nitrogen gas at a certain pressure and temperature is 1.20 g/L, how many moles of nitrogen gas are in 15.0 L.
Irina18 [472]
<h3>Answer:</h3>

0.643 moles

<h3>Explanation:</h3>

We are given;

Density of nitrogen gas as 1.20 g/L

Volume nitrogen as 15.0 L

We are required to calculate the number moles of nitrogen gas;

<h3>Step 1: Determine the mass of nitrogen gas</h3>

We know the density is given by dividing mass by volume.

  • Density = Mass ÷ volume

Therefore, to get the mass;

  • Mass = Density × volume
  • Mass = 1.20 g/L × 15.0 L

        = 18 g

<h3>Step 2: Determine the mass of nitrogen gas </h3>

We know that to get the number of moles, we divide mass by molar mass;

That is, moles = Mass ÷ Molar mass

But, molar mass of nitrogen gas is 28 g/mol

Therefore;

Moles of nitrogen gas = 18 g ÷ 28 g/mol

                                     = 0.643 moles

Therefore, the number of moles of nitrogen gas 0.643 moles

5 0
4 years ago
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