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riadik2000 [5.3K]
2 years ago
14

A student performs an acid-base titration experiment to determine the amount of ascorbic acid in different brands of juice. Whic

h solution should the student use as the base solution in this acid-base titration experiment?
A.) HCl
B.) NaOH
C.) LiBr
D.)CaCl2
Chemistry
1 answer:
Mice21 [21]2 years ago
8 0

Answer:

idn Mann nnnnnnnn . .....mmmmm mmmm aaaaaaa it's a

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A scientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘C. What is the molar mass of this gas?
Ivan

Answer:

The molar mass of the gas is 36.25 g/mol.

Explanation:

  • To solve this problem, we can use the mathematical relation:

ν = \sqrt{3RT/M}

Where, ν is the speed of light in a gas <em>(ν = 449 m/s)</em>,

R is the universal gas constant <em>(R = 8.314 J/mol.K)</em>,

T is the temperature of the gas in Kelvin <em>(T = 20 °C + 273 = 293 K)</em>,

M is the molar mass of the gas in <em>(Kg/mol)</em>.

ν = \sqrt{3RT/M}

(449 m/s) = √ (3(8.314 J/mol.K) (293 K) / M,

<em>by squaring the two sides:</em>

(449 m/s)² = (3 (8.314 J/mol.K) (293 K)) / M,

∴ M = (3 (8.314 J/mol.K) (293 K) / (449 m/s)² = 7308.006 / 201601 = 0.03625 Kg/mol.

<em>∴ The molar mass of the gas is 36.25 g/mol.</em>


7 0
3 years ago
Which structure does a plant cell have that an animal cell does not have?
satela [25.4K]

Answer:

cell wall

Explanation:

plants are the only cells that have cell walls. no other type of organism have a cell wall

6 0
3 years ago
Ana drives at a speed of 175m/s. she recorded a distance of 2km. Find the time.
pantera1 [17]

The time it took her to drive 2 km is 11.43 seconds, because sonverting kilometers to meters, it is 1000 meters to every kilometer, and she travels 2 kilometers, which is two-thousand meters. Then to find the time you need to divide the time by the speed, and with that you get 11.4285714286, or 11.43 seconds.

6 0
3 years ago
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A saturated solution can become supersaturated under which of the following conditions
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the answer is d. when more solute is added

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What is one advantage that proteins derived from beans have over proteins derived from red meats
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Answer: B. Proteins derived from beans have less saturated fat than proteins derived from red meats.

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