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max2010maxim [7]
3 years ago
10

Which of these substances is a mixture?

Chemistry
2 answers:
pickupchik [31]3 years ago
5 0
B. Lemonade, it's a mixture of sugar, lemon juice, and water
pishuonlain [190]3 years ago
4 0

Answer:

Lemonade

Explanation:

Its a mixture of stuff to make a sweat drink :D

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How many molecules are in 3 moles of NaCl?
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Answer:

Given : No. Of moles = 1.5

To calculate : no. Of molecules =N

We know that moles = N / 6.022 x 10²³

Therefore, 1.5 x 6.022 x 10²³ = N

Hence N = 9.0330x 10²³ molecules

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The diameters of the spheres are 72.5 meters square
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Read the description of how ancient metalworkers improved their iron. Then identify the solute and solvent by filling in the bla
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3 years ago
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A solution of 62.4 g of a covalent compound in enough water to make 1.000 L of solution has an osmotic pressure of 0.305 atm at
Alborosie

Answer:

4.99 × 10³ g/mol

Explanation:

Step 1: Given  and required data

  • Mass of the covalent compound (m): 62.4 g
  • Volume of the solution (V): 1.000 L
  • Osmotic pressure (π): 0.305 atm
  • Temperature (T): 25°C = 298 K

Step 2: Calculate the molarity (M) of the solution

The osmotic pressure is a colligative pressure. For a covalent compound, it can be calculated using the following expression.

π = M × R × T

M = π / R × T

M = 0.305 atm / (0.0821 atm.L/mol.K) × 298 K

M = 0.0125 M

Step 3: Calculate the moles of solute (n)

We will use the definition of molarity.

M = n / V

n = M × V

n = 0.0125 mol/L × 1.000 L = 0.0125 mol

Step 4: Calculate the molar mass of the compound

0.0125 moles of the compound weigh 62.4 g. The molar mass is:

62.4 g/0.0125 mol = 4.99 × 10³ g/mol

8 0
3 years ago
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