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lina2011 [118]
4 years ago
14

Imagine you pour some hot soup into a bowl. You place your hands on the outside of the bowl and feel that the bowl is very warm.

How did the heat get from the soup from the bowl through your hands?
Chemistry
1 answer:
cupoosta [38]4 years ago
5 0
The process of thermal conduction is what caused you to sense the heat.

Temperature is a measure of the rate of molecular oscillation, and adding energy to an atom will make it hotter. The high-energy soup will lose the extra energy to the bowl, resulting in the slowing of the soup molecules but the consequent increase in speed of the molecules of the bowl. This would continue until the rate of the bowl atoms is equal to those of the soup, or until the temperatures are equal.
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8 0
1 year ago
If you answer in 10 minutes you'll get 50 points
lisabon 2012 [21]

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5 0
4 years ago
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How many milliliters of a 0.285 M HCl solution are needed to neutralize 249 mL of a 0.0443 M Ba(OH)2 solution?
meriva

Answer:

\large \boxed{\text{77.4 mL}}

Explanation:

                Ba(OH)₂ + 2HCl ⟶ BaCl₂ + H₂O

    V/mL:     249

c/mol·L⁻¹:  0.0443     0.285

1. Calculate the moles of Ba(OH)₂

\text{Moles of Ba(OH)$_{2}$} = \text{0.249 L Ba(OH)}_{2} \times \dfrac{\text{0.0443 mol Ba(OH)}_{2}}{\text{1 L Ba(OH)$_{2}$}} = \text{0.011 03 mol Ba(OH)}_{2}

2. Calculate the moles of HCl

The molar ratio is 2 mol HCl:1 mol Ba(OH)₂

\text{Moles of HCl} = \text{0.011 03 mol Ba(OH)}_{2} \times \dfrac{\text{2 mol HCl}}{\text{1  mol Ba(OH)}_{2}} = \text{0.022 06 mol HCl}

3. Calculate the volume of HCl

V_{\text{HCl}} = \text{0.022 06 mol HCl} \times \dfrac{\text{1 L HCl}}{\text{0.285 mol HCl}} = \text{0.0774 L HCl} = \textbf{77.4 mL HCl}\\\\\text{You must add $\large \boxed{\textbf{77.4 mL}}$ of HCl.}

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Anaphase 1 is when centromeres divide
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