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3 years ago

According to the kinetic-molecular theory, what happens to a liquid when it is transferred from one container to

Chemistry

2 answers:

GuDViN [60]3 years ago

7 0

Answer:

C) The volume stays the same, but the shape changes to fit the new container.

Explanation:

stira [4]3 years ago

4 0

The answer is A or D

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What does the symbol "kg" represent in the metric system?

agasfer [191]

$\huge\mathfrak\red {Answer:}$

It represents

<h2>A) 1,000 grams</h2>

(1 kilogram = 1000 grams)

$\mathfrak\purple {Hope\: this\: helps\: you...}$

3 0

3 years ago

Read 2 more answers

2.1 g of a hydrocarbon fuel is burned in a calorimeter that contains 280 grams of water initially at 25.00◦C. After the combusti

olga2289 [7]

Answer:

$\large \boxed{\text{933 J}}$

Explanation:

There are three heat transfers involved.

heat from combustion of propane + heat gained by water + heat gained by calorimeter = 0

q₁ + q₂ + q₃ = 0

m₁ΔH + m₂C₂ΔT + C_calΔT = 0

Data:

m₁ = 2.1 g

m₂ = 280 g

Ti = 25.00 °C

T_f = 26.55 °C

Ccal = 92.3 J·°C⁻¹

Calculations:

Let's calculate the heats separately.

1. q₁

q₁ = 2.1 g × ΔH = 2.1ΔH g

2. q₂

ΔT = T_f - Ti = 26.55 °C - 25.00 °C = 1.55 °C

q₂ = 280 g × 4.184 J·°C⁻¹ × 1.55 °C = 1816 J

3. q₃

q₃ = 92.3 J·°C⁻¹ × 1.55 °C = 143.1 J

4. ΔH

$\begin{array}{rcl}\text{2.1$\Delta$H g +1816 J +143.1 J} & = & 0\\\text{2.1$\Delta$H g +1959 J} & = & 0\\\text{2.1$\Delta$H g}& = & \text{-1959 J}\\\Delta H & = & \dfrac{\text{-1959 J}}{\text{2.1 g}}\\\\& = & \textbf{-933 J/g}\\\end{array}\\\text{The combustion releases $\large \boxed{\textbf{933 J}}$ per gram of fuel burned.}$

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3 years ago

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In a real system of levers, wheels, or pulleys, the AMA is less than the IMA because _____.

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the work input is depented on the work output

Explanation:

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Arrange the components of the electron transport chain in order from least electronegative to most electronegative thereby indic

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3 years ago