What is the mass (in grams) of 1.95 moles of water
Answers
Answer:
35.10 g is the mass of 1.95 moles of water.
Explanation:
Moles of water = 1.95 mol
Mass of 1 mol of water = 18 g
Then the mass of 1.95 moles of water:
Mass of 1.95 mol =
35.10 g is the mass of 1.95 moles of water.
1.95 moles of H20
Required:
mass in grams
Solution:
The molar mass of water is 18.02 grams per mole
1.95 moles of water (18.02 grams / mole of water) = 35.1 grams of water
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Which of the following best defines the term oxidation state?a. The oxidation state is the rate of oxygen consumption. b. The oxidation state is the rate of oxygen production. c. The oxidation state is the number of electrons an atom or ion has gained or lost with respect to its neutral state. d. The oxidation state is the rate at which a redox reaction approaches its charge neutrality.
Which of the following is NOT soluble in water? A) NaCl B) KBr C) CH3CH2OH D) HCl E) C6H6 How is this determined?
An antacid tablet containing 0.50 g of NaHCO3 is dissolved in 250 mL of water. What is the molar concentration of NaHCO3 in the solution?
Semantics is the study of:
Answers
Answer : Gaseous water molecules condense when they cooled. Liquid water molecules evaporate when they heated.
Explanation :
Condensation : It is a process in which a phase changes from gaseous state to liquid state. This process occurs when the water molecules in the air cool down and they join together to form liquid water.
Evaporation : It is a process in which a phase changes from liquid state to gaseous state. This process occurs when the water is heated, the molecules in the water move and vibrate quickly that they escape into the atmosphere as water vapor.
three
six
nine
Answers
Answer : The correct option is, Nine.
Explanation :
Nuclear fission : It is defined as the splitting of bigger nuclei into two smaller nuclei. During this process neutrons and some energy also released.
In nuclear reactor, neutron hits the uranium nucleus, the uranium nucleus splits into two nuclei and three neutrons. These three neutrons further hit the uranium nucleus and the uranium nucleus split into two nuclei and these 3 neutrons produces 9 neutrons.
The reaction for nuclear fission is,
As, Each nuclear fission reaction produces 3 neutrons
So, three nuclear fission reaction produces 9 neutrons
If each fission reaction in a nuclear reactor emits three neutrons, 9 neutrons are produced from three fission reactions. The correct option is option D.
What is nuclear reactor?
A nuclear reactor comprises a device used to start and regulate nuclear chain reactions involving fission or nuclear fusion. Nuclear power plants employ nuclear reactors to produce energy, and they are also used in nuclear propulsion for ships. Nuclear fission transfers heat into a working fluid (such as water or gas), which then drives steam turbines.
In nuclear reactor, neutron hits the uranium nucleus, the uranium nucleus splits into two nuclei and three neutrons. These three neutrons further hit the uranium nucleus and the uranium nucleus split into two nuclei and these 3 neutrons produces 9 neutrons.
Therefore, the number of neutron is 9. The correct option is option D.
To know more about nuclear reactor, here:
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Answers
Answer: Option (D) is the correct answer.
Explanation:
It is known that relation between pressure and force is that, pressure equals force divided by area.
Mathematically, P =
where P = pressure
F = force
a = area
Hence, when there is increase in number of gas particles in a container the there will be more number of collisions due to increase in number of particles. This will lead to greater collision force and as a result there will be increase in pressure because force is directly proportional to pressure.
Thus, we can conclude that the sequence more collisions --> greater collision force --> higher pressure best describes the result of increasing the number of gas particles in a container best describes the result of increasing the number of gas particles in a container.
A...thermal energy to chemical energy
B....electromagnetic energy to chemical energy
C....kinetic energy to potential energy
D...potential energy to chemical energy
Answers
I hope this helps. Let me know if anything is unclear.
During photosynthesis, sunlight shining on a plant is absorbed. The energy transformation occurs during this process is thermal energy to chemical energy.
What is photosynthesis?
Photosynthesis is a process by which the plants make their food. The process takes sunlight, water, and chlorophyll into food.
Thus, the correct option is A.thermal energy to chemical energy.
Learn more about photosynthesis
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Answers
Explanation:
The diffusion phenomenon is generated by the difference of concentration of a gas between two reference points.
In this case, the two points are: the inside of the cell and the surroundings of it.
The diffusion of oxygen will depend then of the concentration of it in the cell and the concentration in the outside:
The bigger this difference, the higher the diffusion rate of oxygen entering the cell.