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nikitadnepr [17]
3 years ago
5

The idea that light can act as packets led to what new field of science?

Chemistry
2 answers:
statuscvo [17]3 years ago
7 0
The answer is A. Quantum Mechanics
ivolga24 [154]3 years ago
6 0
Quantum mechanics has to do with light and incredibly small particles.



Nuclear mechanics has to do with protons in atoms. Electrical mechanics has to do with electricity and magnetism. Physical mechanics has to do with motion
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What is the percent composition of each element within the compound​
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Answer:

The percentage composition of a given compound is defined as <u>the ratio of the amount of each element to the total amount of individual elements present in the compound multiplied by 100. </u>Here, the quantity is measured in terms of grams of the elements present.

please give me brainliest

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The period of of 440 Hz soundwave is how many seconds
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The period of any wave is one second. the measure of the wave, in this case 440 Hz, is how many wavelengths per second.
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Balance the Chemical Equations<br><br> MgF2 + Li2CO3---&gt; MgCO3 + LiF <br><br> Please Help
kirill115 [55]

Answer:

MgF2 + Li2CO3 ---> MgCO3 + 2LiF

Explanation:

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3 years ago
Lab: Calorimetry and Specific Heat
gayaneshka [121]

Answer:

Title for the lab--->Calorimetry and Specific Heat

Name:

Teacher:

Date:

Purpose: Explore how the specific heat of a substance can be determined using a “coffee cup” calorimeter.

Question: How can you determine the specific heat of a metal using a calorimeter?

Hypothesis: If a metal has a low specific heat, then the metal could make an excellent material for cookware because it takes less heat to raise the temperature of the metal to cook food.

MATERIALS:

- Two polystyrene coffee cups

- Lid for polystyrene cup

- Thermometer      

- 250 mL beaker        

- 400 mL beaker    

- Ring stand    

- Two buret clamps    

- Hot plate  

- Test-tube holder    

- 50 mL graduated cylinder  

- Water    

- aluminum, copper, iron, and lead powder    

- Analytical balance

PROCEDURE:

1) Set up a 600 mL beaker and add 400 mL of dis"lled water inside and place it on a hot plate un"l it boils. Also set up 2 dry Styrofoam cups with a lid aside and add 100.0 mL tap water (calorimeter water) inside.

2) In the boiling water, place the unknown metal sample inside for about 30 min. Before though, weigh it accurately and record the mass on your data sheet.

3) After 30 min, take the temperature of boiling water to the nearest 0.1 °C (Ini"al temp of metal), then take the metal out of the boiling water and replace it into Styrofoam cups filled with room temperature tap water. Ini"al temperature of water is the room temperature of the tap water.

4) Take every 15 seconds for about 2 minutes the temperature of water inside the calorimeter with a thermometer inserted through the hole in the lid. Gently swirl the cup to mix the contents and record the temperature. Use the highest temperature.

5) Calculate the specific heat of the metal sample.

then the table will be in the picture i posted on here  

next is your ---> Analysis /Conclusion

Analysis:

Analyzed from the data above, we know the temperature that is measured depends on the amount of mole in the solution. If the amount of mole in the solution is large, the temperature will be as well. After a few moments, the temperature rises and falls, and in some instances, it remains steady.

Conclusion:

In conclusion, I do believe my hypothesis was supported through my experiments. Through said experiments, I identified the unknown metal as we calculated the changes in the heat, and found that the metals that should be put to use are copper and iron metals. Copper and iron have a low specific heat, which makes these ideal metals when creating cookware. When a metal has low specific heat, it needs less energy to produce heat and it cools down with less energy as well. For these reasons, my hypothesis is supported.

Explanation:

hope this helps :)

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2 years ago
Many of the motions of tje solar system are regular and predictable, meaning they happen over and over in a pattern . Identify o
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The orbits of the plants are fixed around the sun by the suns gravitational pull
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