Not sure if this is what you’re asking, but:
The particles would get closer and closer together and move slower and slower. :)
Answer:
290.32 g
Explanation:
First we <u>calculate the volume</u> of the cube:
- Volume = (3.20 cm)³ = 32.768 cm³
Now we <u>convert cubic centimeters to mililiters</u>:
- 32.768 cm³ * 1 mL / 1 cm³ = 32.768 mL
Finally we <u>calculate the mass</u>, using the <em>equation for density</em>:
- mass = 8.86 g/mL * 32.768 mL = 290.32 g
Answer: The answer is C. A mercury thermometer is better to measure very small changes in temperature.
Explanation:
i took this quiz and this is the answer .
A) A mercury thermometer can measure the freezing point of a liquid that freezes at −80 °C.
B) An alcohol thermometer can measure the boiling point of a liquid that boils at 80 °C.
C) A mercury thermometer is better to measure very small changes in temperature.
D) An alcohol thermometer is better to measure the boiling points of colorless liquids.
Mass of Hydrogen gas produced : 3.202 g
<h3>Further explanation</h3>
A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.
Hydrogen gas can be obtained by reacting metals with acids
Reaction of Aluminium(Al) and Hydrochloric acid(HCl)
2Al + 6HCl → 2AlCl₃ + 3H₂
mass of Aluminium : 28.56 g, so mol Al :
![\tt \dfrac{28.56}{26.98}=1.059~moles](https://tex.z-dn.net/?f=%5Ctt%20%5Cdfrac%7B28.56%7D%7B26.98%7D%3D1.059~moles)
From equation, mol ratio of Al : H₂ = 2 : 3, so mol H₂ :
![\tt \dfrac{3}{2}\times 1.059=1.5885](https://tex.z-dn.net/?f=%5Ctt%20%5Cdfrac%7B3%7D%7B2%7D%5Ctimes%201.059%3D1.5885)
Mass of Hydrogen gas produced :
![\tt mass=mol\times MW\\\\mass=1.5885\times 2.016\\\\mass=3.202~g](https://tex.z-dn.net/?f=%5Ctt%20mass%3Dmol%5Ctimes%20MW%5C%5C%5C%5Cmass%3D1.5885%5Ctimes%202.016%5C%5C%5C%5Cmass%3D3.202~g)
The concentration of Hydrogen chloride in g per dm³ = 64 g/dm³
<h3>Further explanation</h3>
The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight / volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent
A solution of hydrochloric acid contains 3.2 g of hydrogen chloride in 50 cm³, so the concentration :
![\tt =\dfrac{3.2~g}{50~cm^3}=0.064~g/cm^3](https://tex.z-dn.net/?f=%5Ctt%20%3D%5Cdfrac%7B3.2~g%7D%7B50~cm%5E3%7D%3D0.064~g%2Fcm%5E3)
For the concentration of Hydrogen chloride in g per dm³ :
![\tt =0.064\dfrac{g}{cm^3}\times \dfrac{1000~cm^3}{dm^3}\\\\=64~g/dm^3](https://tex.z-dn.net/?f=%5Ctt%20%3D0.064%5Cdfrac%7Bg%7D%7Bcm%5E3%7D%5Ctimes%20%5Cdfrac%7B1000~cm%5E3%7D%7Bdm%5E3%7D%5C%5C%5C%5C%3D64~g%2Fdm%5E3)