The average kinetic energy of water molecules is greatest in which of these samples?(1) 10 g of water at 35°C(2) 10 g of water at 55°C(3) 100 g of water at 25°C(4) 100 g of water at 45°C
Answers
Answer : The correct option is, (2) 10 g of water at 55°C
Explanation :
Average kinetic energy of the gas particle is directly proportional to the temperature of the gas particle.
Formula used :
where,
R = Gas constant
T = temperature
= Avogadro's number
From this we conclude that the kinetic energy is directly proportional to the temperature where 'R' and are constant. That means kinetic energy depends only on the temperature not on the mass.
(Higher the temperature, higher will be the kinetic energy)
Hence, the average kinetic energy of water molecules is greatest in 10 g of water at 55°C.
Final answer:
The sample with the highest average kinetic energy of water molecules is (2) 10 g of water at 55°C.
Explanation:
Kinetic energy is a fundamental concept in physics that describes the energy an object possesses due to its motion. It depends on both an object's mass and its velocity. Objects in motion have kinetic energy, and the faster they move or the more massive they are, the greater their kinetic energy. This energy can be transferred or transformed but is always conserved in a closed system.
The average kinetic energy of water molecules depends on the temperature of the water. The higher the temperature, the greater the average kinetic energy. In this case, the sample with the highest average kinetic energy would be (2) 10 g of water at 55°C. This sample has a higher temperature than the other options, therefore, the water molecules in this sample have the highest average kinetic energy.
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67,029 to three significant figures
0.15 to one significant figure
52.8005 to five significant figures
3.17497 to three significant figures
Answers
a) 67000 b) 0.20 c) 52.8010 d) 3.17000 are the answers respectively.
What is measurement?
Distance is a physical quantity which is measured in meter. If a man travel then it is measured in meters that defines that how much he travel from one point to another point for all these type of things we use to measure distance.
Centimeter is also a physical quantity which is use to measure distance. 1 centimeter is equal to 0.01 meter and 1 centimeter is equal to 0.00001 kilometer.the kilometer is large quantity to measure distance while centimeter is smaller quantity to measure distance.
Kilometer is also a physical quantity which use to measure the distance 1 kilometer is equal to 1000 mtr and 1 kilometer is equal to 100000 centimeter.
For above conclusion, we easily states that the kilometer is large quantity to measure distance while centimeter is smaller quantity to measure distance. Centimeter is also a physical quantity which is use to measure distance. 1 centimeter is equal to 0.01 meter and 1 centimeter is equal to 0.00001 kilometer.
Therefore, a) 67000 b) 0.20 c) 52.8010 d) 3.17000 are the answers respectively.
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Answer:
a) 67000 b) 0.20 c) 52.8010 d) 3.17000
Explanation:
your welcome :)
b. I
c. N
d. O
e. C
Answers
a flourine atom on its own is always a negative ion.
Answers
Answer:
The increase in CO2 will affect crop plants by causing in increase in global warming and therefore, will stunt plant growth and cause excessive heat to kill the plants.
Explanation:
Hope this helps! xoxo
Answers
calculation
by use of ideal gas equation, that is Pv=nRT
where n is number of moles
P(pressure)= 660 mmhg
R(gas constant) = 62.364 l.mmhg/mol.K
T(temperature)= 25 +273 = 298 k
by making n the subject of the formula
n= Pv/ RT
n is therefore= (660mm hg x11 L)/( 62.364 L.mmhg/mol.k x298 K) = 0.391 moles
Answers
Answer:
CO₂
Explanation:
The product of the reaction is CO₂.
In a chemical reaction, the product is the substance usually found on the right hand side of the expression.
Reaction equation is given as;
C + O₂ → CO₂
In this reaction, C and O₂ are the reactants
CO₂ is the product of the reaction.
- This reaction is called a combination reaction in which two species combines to give a product.
Answers
C- it emitted an alpha particle in a nuclear reaction (just took the edg test)