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blondinia [14]
2 years ago
15

Select the correct answer. One night, an ice storm strikes your town. When you go outside in the morning, your entire front walk

way is covered in a thick layer of ice. icy brick walkway in winter Your father asks you to walk to the corner store to buy a substance that you can add to the solid water to lower its freezing point and therefore melt it. When you get to the store, you read the labels on several containers holding substances that are soluble in water. For equal molar amounts, which substance will be the most effective? A. calcium chloride (CaCl2 → Ca2+ + 2Cl−) B. fructose (C6H12O6 → C6H12O6) C. potassium chloride (KCl → K+ + Cl−) D. sucrose (C12H22O11 → C12H22O11)
Chemistry
1 answer:
Sever21 [200]2 years ago
3 0

Sucrose will be the most effective. Hence, option D is correct.

<h3>What is sucrose?</h3>

Sucrose is simply the chemical name for sugar, the simple carbohydrate we know and love that is produced naturally in all plants, including fruits, vegetables and even nuts.

When salt or sugar (a solute) is combined with water or ice (a solvent) and is evenly distributed, the freezing point is lowered.

(C_{12}H_{22}O_{11} → C_{12}H_{22}O_{11})

Hence, sucrose will be the most effective.

Learn more about sucrose here:

brainly.com/question/24214907

#SPJ1

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A chemist is studying the properties of a gas under various conditions. He observes that when the gas is at room temperature and
larisa86 [58]

Answer:

Ideal gas explains the property of gas that has no inter-molecular attractions irrespective of temperature and pressure.

<u>Explanation:</u>

  • Ideal gases assumes that the gases would experience no inter-molecular attraction and collision with other gases.
  • These gases are perfectly exhibiting elastic collision in nature.
  • The particle of gases moves slowly at lower temperature and the gases would become close when they exhibit high pressure.
  • The "closeness of the gas-particle" and "low-speed characteristics" are the important observations noted.
  • The inter-molecular forces deviate the property of gases from ideal gas behavior.
3 0
3 years ago
Read 2 more answers
Roger has a car that accelerates at 5 m/s2. If the car has a mass 0f 1000 kg, how much force does the car produce?
jarptica [38.1K]

Answer:

<h2>The answer is 5000 N</h2>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 1000 × 5

We have the final answer as

<h3>5000 N</h3>

Hope this helps you

6 0
3 years ago
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Unit 6 Critical Thinking Questions! (HELP) - 30 POINTS
Gnoma [55]
Report this clown who put the first answer he’s trying to get your ip
7 0
3 years ago
If the pka of hcho2 is 3.74 and the ph of an hcho2/nacho2 solution is 3.89, it means that
Andrei [34K]

Hi, the question has some missing part. The complete question should be " If the pK_{a} of HCHO_{2} is 3.74 and the pH of an HCHO_{2}/NaCHO_{2} solution is 3.89, it means that -

(a) [HCHO_{2}]=[NaCHO_{2}]

(b) [HCHO_{2}]> [NaCHO_{2}]

(c) [HCHO_{2}]<  [NaCHO_{2}]

Which of the options are true?"

Answer: Option (c) is true.

Explanation:

HCHO_{2}/NaCHO_{2} is an weak acid-conjugate base buffer. Hence, in accordance with Henderson-Hasselbalch equation-

                  pH=pK_{a}(HCHO_{2})+log(\frac{[CHO_{2}^{-}]}{[HCHO_{2}]})

Here, pH = 3.89, pK_{a} of HCHO_{2} = 3.74

So, 3.89=3.74+log(\frac{[CHO_{2}^{-}]}{[HCHO_{2}]})

or, \frac{[CHO_{2}^{-}]}{[HCHO_{2}]} = 1.41 (>1)

So,  [CHO_{2}^{-}]> [HCHO_{2}]

or, [NaCHO_{2}]> [HCHO_{2}]

Hence, option (c) is correct.

6 0
4 years ago
2. Circle the letter of each sentence that is true about numbers expressed in
ivanzaharov [21]

Answer:

I think it is b) NOT SURE

Explanation:

5 0
4 years ago
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