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Orlov [11]
4 years ago
8

The weather in Europe was unusually warm during the summer of 1995. The TV news reported temperatures as high as 45 degree centi

grate. What was the temperature on the Fahrenheit scale?
Chemistry
1 answer:
Tpy6a [65]4 years ago
5 0

Answer : The temperature on the Fahrenheit scale was, 113^oF

Explanation :

The conversion used for the temperature from degree centigrade to Fahrenheit is:

^oF=(^oC\times \frac{9}{5})+32

where,

^oF = temperature in Fahrenheit

^oC = temperature in centigrade

As we are given the temperature in degree centigrade is, 45

Now we have to determine the temperature in Fahrenheit.

^oF=(45^oC\times \frac{9}{5})+32

^oF=113

Therefore, the temperature on the Fahrenheit scale was, 113^oF

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At − 12.0 ∘ C , a common temperature for household freezers, what is the maximum mass of sorbitol (C6H14O6) you can add to 2.00
allochka39001 [22]

Answer:

2,347.8 grams

Explanation:

The freezing point depression Kf of water = 1.86° C / molal.

 

To still freeze at -12° C, then the molality of the solution 12/ 1.86 = 6.45 moles

 

The molecular weight of sorbitol (C6H14O6)is:

 

6 C = 6 ×12 = 72

14 H = 14 × 1 = 14

6 O = 6 × 16 = 96

...giving a total of 182

 So one mole of sorbitol has a mass of 182 grams.

 

Since there are 2 kg of water,  2 × 6.45 moles = 12.9 moles can be added to the water to get the 12° C freezing point depression. 

Therefore

grams = moles × molar mass

12.9 moles × 182 grams / mole = 2,347.8 grams of sorbitol can be added and still freeze

7 0
3 years ago
18. Which one of the following is generally NOT true about elements in the
Dennis_Churaev [7]

Answer:

Statement B "Elements at the right side of the period are smaller in size" is not true.

Explanation:

Going through the rows of the elements in the period the size of the elements get continuously bigger.

7 0
3 years ago
Read 2 more answers
Write the reaction for breaking all the bonds in c6h6(g).
Usimov [2.4K]
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3 0
3 years ago
What type of energy is caused by positive and negative charges in matter
levacccp [35]

Answer:

Static electricity is the result of an imbalance between negative and positive charges in an object. These charges can build up on the surface of an object until they find a way to be released or discharged.

Explanation:

7 0
3 years ago
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In a percentage composition investigation a compound was decomposed into its elements: 20.0 g of calcium, 6.0 g of carbon, and 2
inysia [295]

The percentage composition of this compound : 40%Ca, 12%C and 48%O

<h3>Further explanation</h3>

Given

20.0 g of calcium,

6.0 g of carbon,

and 24.0 g of oxygen.

Required

The percentage composition

Solution

Total mass of compound :

=mass calcium + mass carbon + mass oxygen

=20 g + 6 g + 24 g

=50 g

Percentage composition :

  • Ca-calcium

\tt \dfrac{20}{50}\times 100\%=40\%

  • C-carbon

\tt \dfrac{6}{50}\times 100\%=12\%

  • O-oxygen

\tt \dfrac{24}{50}\times 100\%=48\%

3 0
3 years ago
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