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Feliz [49]
2 years ago
5

Where did coper find​

Chemistry
1 answer:
ladessa [460]2 years ago
6 0

Answer:

Copper is element number 29

4th row

11th column

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In the Energy and Specific Heat lab, what temperature should be recorded as the final temperature of the water when measuring th
Anon25 [30]

Answer:

B. The temperature of the water when the food sample has finished burning completely.

Explanation:

Heat or thermal energy is a form of energy that transfers from one object to another due to a temperature difference between the objects. The units for heat are joules or calories.

Calorimetry is the measurement of heat energy released or absorbed in a chemical  reaction. A calorimeter is used in calorimetry. The calorimeter operates on the Law of Conservation of Energy which states that energy is never created or destroyed but is transformed from one form to another or between objects.

In food calorimetry, the energy released when food is burned is measured by recording the rise in temperature of water in a calorimeter when a given mass of a food sample is burned completely.

Energy can be calculated using the formula: Q = mc ∆T

where Q = the energy in joules or calories, m = the mass in grams, c = specific heat and ∆T = the change in temperature (final temperature - initial temperature).

The temperature of the water when the food sample has finished burning completely is taken as the final temperature of the water. The sample is allowed to smolder for sometime before recording the final  water temperature. This is because the water temperature will continue to rise after the  flame has gone out.

6 0
3 years ago
Calculate freeze 62.9 g of iron at 1535oC<br> Hf (J/g)=257
Inessa [10]

Answer:

<u>-16200J</u>

Explanation:

(257J/g)(62.9g)

eliminate the variables

u get 16165.3

go to 3 significant digits

u get 16200

and since it is freezing we are taking out energy so it would be

-16200J

4 0
3 years ago
What is correct name of the compound whose formula is bf3?
ololo11 [35]
Boron trifluoride is the correct name for compound BF3
8 0
3 years ago
Which of the following is a reactant in aerobic respiration?
IrinaVladis [17]
The reactant in aerobic respiration is oxygen (answer C)
3 0
2 years ago
The study of organisms in relationship to their environment is .
laiz [17]

Answer:

Ecology.

Explanation:

Because you are epic.

4 0
3 years ago
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