Answer:
Initial temperature = T₁ = -96.65 °C
Explanation:
Given data:
Initial volume = 4.5 L
Final temperature = 80°C (80+273 = 353 K)
Final volume = 9.0 L
Initial temperature = ?
Solution:
According to Charles law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.
Mathematical expression:
V₁/T₁ = V₂/T₂
V₁ = Initial volume
T₁ = Initial temperature
V₂ = Final volume
T₂ = Final temperature
Now we will put the values in formula.
V₁/T₁ = V₂/T₂
T₁ = V₁ T₂/V₂
T₁ = 4.5 L × 353 K / 9.0 L
T₁ = 1588.5 L.K / 9.0 L
T₁ = 176.5 K
Kelvin to °C:
176.5 K - 273.15 = -96.65 °C
Answer:
Mixing chemicals can be dangerous because you are handling chemicals that are often hazardous.*
Always wear the correct personal protective clothing and equipment when mixing chemicals.
Follow these steps to mix chemicals safely:
Choose a suitable mixing area. The site should be away from plants, people, animals and waterways. It needs to have good lighting and must be well ventilated. There should be first aid equipment and materials to clean up any spills that may occur. Make sure you have lots of clean, fresh water available. The water that you are using in your mixture should be as clean as possible.
Check the product label for the chemical to find out how to mix a solution, including the proportions or volumes needed. If you are unsure, contact the manufacturer or retailer for instructions. I hope it helps. Be safe.
5.7744 g is the mass of the methane gas.
<h3>What are moles?</h3>
A mole is defined as 6.02214076 × of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.
Mass =5.7744 g
Learn more about moles here:
brainly.com/question/8455949
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The answer to your proposed question is Neutron. This is because the atomic mass unit of a neutron is 1 and so it would contribute to the overall mass of the atom.
I hope this answer helped you!