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givi [52]
2 years ago
7

When you transferred the hot metal from the boiling water and into the calorimeter (coffee cup), if the thermometer touched the

hot metal sample, how will this affect each of the following:
a) Change in temperature of the water.
b) Change in temperature of the metal sample.
c) Specific heat of the metal. Explain.
Chemistry
2 answers:
bogdanovich [222]2 years ago
8 0

When you transferred the hot metal from the boiling water and into the calorimeter,  The effect will be as follows:

The temperature of the water will increase.

The temperature of the metal will decrease.

No change occurs in the specific heat of metal.

<h3>What is the Specific heat?</h3>

The heat in calories is required to raise the temperature of one gram of a substance one degree Celsius.

a )Since the metal of the cup is hot and the water inside is cold, the water's temperature will rise as heat is transferred from the metal to the liquid. Hence, the temperature of the water will increase.

b) Due to (a), heat is lost from the food to the water in the cup, lowering the metal's temperature. Hence, the temperature of the water will decrease.

c) No change occurs in the specific heat of metal because of its constant property.

Learn more about the temperature here:

brainly.com/question/13439286

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sergey [27]2 years ago
7 0

When you transferred the hot metal from the boiling water and into the calorimeter,  The effect will be

  • Change in temp is positive
  • Temp of metal V, dT=-ve
  • No change occurs in the specific heat of metal

This is further explained below.

<h3>What is the Specific heat of the metal?</h3>

a )Since the metal of the cup is hot and the water inside is cold, the water's temperature will rise as heat is transferred from the metal to the liquid.

Change in temp is positive

b)

Due to (a), heat is lost from the food to the water in the cup, lowering the metal's temperature.

Temp of metal V, dT=-ve

c)

No change occurs in the specific heat of metal because of its constant property.

Read more about Temperature

brainly.com/question/13439286

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What is ionization energy?
oksian1 [2.3K]
A. The minimum amount of energy required to remove one electron from an atom.
6 0
3 years ago
How many grams of KBr are present in 250.0mL of a 1.20M solution
castortr0y [4]
Molar mass KBr = 119 g/mol

Volume in liters: 250.0mL / 1000 => 0.25 L

n = M x V

n = 1.20 x 0,25 => 0.3 moles of KBr

Therefore:

1 mole KBr ----------- 119 g
0.3 moles KBr -------- ??

0.3 x 119 / 1 => 35.7 g of KBr 
4 0
3 years ago
The pressure in a car tire is 178 kPa at 37°C. After a long drive, the pressure is 275 kPa. What is
dimaraw [331]

Answer:

T₂ = 478.93 K

Explanation:

Given that,

Initial pressure, P₁ = 178 kPa

Initial temperature, T₁ = 37°C = 310 K

Final pressure, P₂ = 275 kPa

We need to find the new temp of the air in the tire, assuming the volume is constant. We know that,

\dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}\\\\T_2=\dfrac{P_2T_1}{P_1}\\\\T_2=\dfrac{275\times 310}{178}\\\\T_2=478.93 K

So, the new temperature is equal to 478.93 K.

3 0
3 years ago
Why does Hg2+ have a negative standard entropy
lidiya [134]

Answer:

Hg∧2+ has a negative standard entropy because the ions are highly solvated in aqueous phase; smaller the ionic size, the more highly it is surrounded by solvated ions. Therefore it will be in highly ordered state hence the entropy decreases.

Hg2 ^2+ has a positive standard entropy because the ionic size of Hg^2+ is smaller than Hg2 ^2+, so therefore the Hg^2+ is highly solvated and that means that it is in highly ordered state.  Hg2 ^2+  is not highly solvated so it will have a positive entropy

Explanation:

The values of standard entropy of aqueous ions has a negative standard entropy because the ions are highly solvated in aqueous phase; smaller the ionic size, the more highly it is surrounded by solvated ions. Therefore it will be in highly ordered state hence the entropy decreases.

Hg2 ^2+ has a positive standard entropy because the ionic size of Hg^2+ is smaller than Hg2 ^2+, so therefore the Hg^2+ is highly solvated and that means that it is in highly ordered state.  Hg2 ^2+  is not highly solvated so it will have a positive entropy

4 0
3 years ago
a soft drink contains 47.0 carbohydrates per serving. calculate the number of nutritional calories (cal) per serving in this dri
Zolol [24]

A soft drink that contains 47 grams of carbohydrates per serving has a nutritional calories (cal) per serving of 188 calories.

Calories are a measurement of energy released from your body after digestion and absorption of food whereas carbohydrate is a carbon-based organic compound consisting of carbon, hydrogen, and oxygen atoms with a general chemical molecular formula of CH₂O.

In order to get the number of nutritional calories per serving from a soft drink that has 47 grams of carbohydrate, we will need to multiply the number of grams by 4 since there are about 4 calories for every gram of carbohydrate, and the calculation is as follows:

47×4=188

Hence, there are 188 calories in a soft drink that contains 47 grams of carbohydrates.

To learn more about calories visit: brainly.com/question/1061571

#SPJ4

8 0
1 year ago
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