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densk [106]
3 years ago
10

the average speeds of gas molecules in.cylinders A,b,c,d are 0.01 m/s, 0.005m/s ,0.1 m/s and 0.5 m/s, respectively .which cylind

er contains gas that is closest to.absolute.zero
Chemistry
1 answer:
Darya [45]3 years ago
8 0
<span>The average speed of the gas is related to the kinetic energy of the gas.  The kinetic energy of the gas is also related to the temperature of the gas. If the average speed of the gas is closer to zero, it means that it has very low motion or kinetic energy. This can be inferred that the gas has a very low temperature. At absolute zero, the motion of all the gas molecules stops. This means that the kinetic energy of the gas is also zero. Zero kinetic energy means zero average speed.</span> <span>So, the answer is cylinder B. The average speed of the gas in cylinder B is closest to zero.</span>
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Calculate the atomic mass of the element
Viktor [21]
<span>To calculate the atomic mass of a single atom of an element, add up the mass of protons and neutrons. Example: Find the atomic mass of an isotope of carbon that has 7 neutrons. You can see from the periodic table that carbon has an atomic number of 6, which is its number of protons.</span>
5 0
3 years ago
The increase in metabolic rate after a meal is called
Sergio039 [100]

Answer:

The thermic effect of food.

Explanation:

The process in which metabolic rate increase after meal is called the THERMIC EFFECT OF FOOD.

THERMICAL EFFECT OF FOOD can be defined as the way in which some calories a person or an individual consumed after meal help to break down the food for easy absorbing and to store the food consumed while some are burn off during execise which is why a person or an individual metabolic rate may elevate after meal, during exercise or due to some other factors reason been that human body makes use of energy everyday due to day to day activities.

Example a person who consumed a protein food may experience high THERMIC EFFECT than the person who consumed food that contained fat or carbohydrates reason been it can take a long time for such person body to break down the food, burn and absorb the protein.

Therefore The increase in metabolic rate after a meal is called THERMIC EFFECT OF FOOD.

3 0
3 years ago
PLEASE ANSWER BY 9:00pm PT
astra-53 [7]

Answer:

thanks to all the mortal those who are born must die one day that it cut in cannot be avoided as ripe fruit fall of the tree so it is common to all the mortal those who are born must die one day that it cut

Explanation:

silghjnb bj i bb b nv bv hc U and lamenting produce a few of the tree so much for your time is common to both of us ☺️ to all the said that death of the tree so it cut in cannot be avoided as well as well but the mortal Kombat X the said

7 0
3 years ago
If 3.0 moles of hydrogen react, how many grams of nitrogen will be used? Round your answer to the nearest whole number. N2 + 3H2
Iteru [2.4K]

Answer:

28g

Explanation:

Given parameters:

Number of moles of hydrogen  = 3moles

Unknown:

Mass of nitrogen used = ?

Solution:

 To solve this problem, let us establish the balanced reaction equation first;

             N₂  + 3H₂ →  2NH₃

From the balanced reaction equation;

                 3 mole of H₂ will combine with 1 mole of N₂

                 

Now,

   Mass of Nitrogen  = number of moles x molar mass

         Molar mass of N₂  = 2(14) = 28g/mol

   Mass of Nitrogen  = 1 mole x 28g/mole  = 28g

8 0
3 years ago
The combustion of ethane ( C 2 H 6 ) produces carbon dioxide and steam. 2 C 2 H 6 ( g ) + 7 O 2 ( g ) ⟶ 4 CO 2 ( g ) + 6 H 2 O (
grigory [225]

Answer:

10.6 moles of CO₂ are produced in this combustion

Explanation:

The combustion reaction is:

2C₂H₆ (g) + 7O₂ (g) ⟶ 4CO₂ (g) + 6H₂O (g)

We assume the ethane as the limiting reactant because the excersise states that the O₂ is in excess.

We make a rule of three:

2 moles of ethane can produce 4 moles of CO₂

Therefore 5.30 moles of ethane will produce (5.3 . 4) /2 = 10.6 moles

7 0
3 years ago
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