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3 years ago

Which statement is true for two pieces of iron at the same temperature?

Chemistry

2 answers:

babymother [125]3 years ago

6 0

Answer:

A. The average kinetic energy of their particles is the same.

Explanation:

The temperature of an object is proportional to the average kinetic energy of its particles, following the relationship:

E_k = \frac{3}{2}kTEk=23kT

where

E_kEk is the average kinetic energy of the particles

k is the Boltzmann constant

T is the absolute temperature

From this relationship, therefore, we see that the average kinetic energy of the particles in a substance depends only on its temperature: therefore, since the two pieces of iron have same temperature, they also have same average kinetic energy.

sammy [17]3 years ago

5 0

Answer:

Explanation:

took the quiz

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The specific heat of water is 4.184 J/ g°C, the specific heat of wood is 1.760 J/g°C, and the specific heat of coal is 1.26 J/g°

Tomtit [17]

Answer:

D. Water

Explanation:

Specific heat is defined as the amount of heat you need to add to a substance per unit of mass to increase its temperature in 1°C.

That means if you have the same mass of substances, the one with the higherst specific heat is the one that requires the most amount of heat to increase its temperature by one degree Celsius.

As you can see, water is the material with the highest specific heat doing the material that requires the most heat.

Right answer:

<h3>D. Water </h3>

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3 years ago

True or False? When temperature rises, the number of people who go to the beach increases. Temperature is the independent variab

Rufina [12.5K]

Answer: True

Explanation: Hope this help

4 0

4 years ago

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A car traveling at 30 m/s comes to a stop in 5 seconds. What is the acceleration of this car?

aliina [53]

Answer:

6m/s brainliest?

Explanation:

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3 years ago

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If the percent yield for the following reaction is 75.0%, and 25.0 g of NO₂ are consumed in the reaction, how many grams of nitr

victus00 [196]

Answer:

17.1195 grams of nitric acid are produced.

Explanation:

$3NO_2+H_2O\rightarrow 2HNO_3+NO$

Moles of nitrogen dioxide :

$\frac{25.0 g}{56 g/mol}=0.5434 mol$

According to reaction 3 moles of nitrogen dioxides gives 2 moles of nitric acid.

Then 0.5434 moles of nitrogen dioxides will give:

$\frac{2}{3}\times 0.5434 mol=0.3623 mol$ of nitric acid.

Mass of 0.3623 moles of nitric acid :

$0.3623 mol\times 63 g/mol=22.8260 g$

Theoretical yield = 22.8260 g

Experimental yield = ?

$\%Yield=\frac{\text{Experimental yield}}{\text{theoretical yield}}\times 100$

$75\%=\frac{\text{Experimental yield}}{22.8260 g}$

Experimental yield of nitric acid = 17.1195 g

7 0

4 years ago

What is the empirical formula of a substance that contains 12.0 g of c, 2.00 g of h, and 5.33 g of o?

QveST [7]

Empirical formula is the simplest ratio of whole numbers of components making up a compound.
empirical formula can be calculated as follows
C H O
mass 12.0 g 2.00 g 5.33 g
number of moles
12.0 g / 12 g/mol 2.00 g / 1 g/mol 5.33 g / 16 g/mol
= 1.00 mol = 2.00 mol = 0.333 mol
divide by the least number of moles
1.00 / 0.333 2.00 / 0.333 0.333/ 0.333
= 3.00 = 6.01 = 1.00
the number of atoms
C - 3
H - 6
O - 1
empirical formula is C₃H₆O

8 0

3 years ago