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3 years ago

Consider the heating curve. In which region are most particles moving the fastest?

Chemistry

2 answers:

Nikitich [7]3 years ago

5 0

The particles are moving fastest in Region D) 5.

As temperature increases, so does the average kinetic energy (speed) of the molecules.

choli [55]3 years ago

3 0

Answer: The correct option is (D)

Explanation:

As the temperature increases the energy of the particles increases which results in increase of kinetic energy of the particles. With this increase in energy particles moves more rapidly.

So, the particles at higher temperature will be moving at faster speed in region 5.

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KMnO4 + KCI + H2SO4<br>MnSO4 + K2S04+ Cl₂ + H₂O

yKpoI14uk [10]

Answer:

Balancing the equation

2KMnO₂+10KCl+8H₂SO₄⇒2MnSO₄+6K₂SO₄+8H₂O+5Cl₂

7 0

3 years ago

An unknown piece of metal weighing 95.0 g is heated to 98.0°C. It is dropped into 250.0 g of water at 23.0°C. When equilibrium i

lutik1710 [3]

Answer:

$C_{metal}=126.6\frac{J}{g\°C}$

Explanation:

Hello!

In this case, when two substances at different temperature are put in contact and an equilibrium temperature is attained, we can evidence that the heat lost by the hot substance (metal) is gained by the cold substance (water) and we can write:

$Q_{metal}=-Q_{water}$

Which can be also written as:

$m_{metal}C_{metal}(T_{EQ}-T_{metal})=-m_{water}C_{water}(T_{EQ}-T_{water})$

Thus, since we need the specific heat of the metal, we solve for it as shown below:

$C_{metal}=\frac{m_{water}C_{water}(T_{EQ}-T_{water})}{-m_{metal}(T_{EQ}-T_{metal})} \\\\C_{metal}=\frac{250.0g*4.184\frac{J}{g\°C}(29.0\°C-98.0\°C)}{95.0g(29.0\°C-23.0\°C)} \\\\C_{metal}=126.6\frac{J}{g\°C}$

Best regards.

7 0

2 years ago

Why do oceanographers take measurements of the conductivity of the

bazaltina [42]

Answer:

B. Conductivity can be used to calculate the salinity of the water.

I am 100% sure this is the correct answer :)

8 0

2 years ago

You are cooking dinner using a metal pan. When you pick up the pan,the handle burns your hand. Which form of thermal energry tra

VLD [36.1K]

Answer:

Conduction

Explanation:

4 0

2 years ago

Read 2 more answers

Calculate the slope of each line using the points given. (25.6cm³ , 28.16g), (17.3cm³, 19.03g)

fiasKO [112]

Answer:

1.1

Explanation:

The slope of a line can be calculated using the values of the x and y corrdinates. The equation is given as;

M = ΔY / ΔX = Y2 - Y1 / X2 - X1

From the points;

(25.6cm³ , 28.16g) - (X1, Y1)

(17.3cm³, 19.03g) - (X2, Y2)

Inserting the values into the equation;

M = 19.03 - 28.16 / 17.3 - 25.6

M = -9.13 / -8.3 = 1.1

3 0

3 years ago