What is a bond called that shares electrons between two neutral atoms?A. Polar bond
B. Covalent bond
C. Metallic bond
D. Ionic bond
Answers
covalent bond involves a pair of electrons being shared between atoms.
Answer
B. covalent bond
Related Questions
Which of the following compounds does NOT contain molecules?a. H2 b. NaCl c. CO2 d. H2O
Select the sentence that best describes why copper and some other metals are good conductors.AnswerCopper atoms have loosely held electrons; this means they can freely move in and out of the nucleus of the atom.Copper atoms have a loosely held free electron in their outer shell that is able to move freely to other atoms.Copper and some other metals have highly active inner shells. This means that electrons can be freely exchanged between shells.Copper has a small number of electrons; this means it can easily shed these electrons and take electrons from other atoms....?
What is the mass of an atom that has 3 protons, 4 neutrons, and 3 electrons? 4 6 7 10
When the atmosphere has too much carbon dioxide in it, the oceans absorb some of it to achieve a new balance. This is an example of _____. the hydrosphere a geochemical cycle sphere interaction the hydrologic cycle?
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
The temperature of the balloon will decrease.
The gas atoms will strike the sides of the balloon more often.
The gas inside the balloon will change into a liquid.
Answers
Answer: The gas atoms will strike the sides of the balloon more often.
Explanation:
Kinetic energy is the energy possessed by an object by virtue of its motion.
Average kinetic energy is defined as the average of the kinetic energies of all the particles present in a system. It is determined by the equation:
K= kinetic energy
R= gas constant
T= temperature
From above, it is visible that kinetic energy is directly related to the temperature of the system.
So if average kinetic energy of the system increases , the speed of the molecules will be more and hence the gas atoms will strike the sides of the balloon more often.
Hope I helped!
Answers
1. Deforestation. Cutting of trees results to the endangered habitats of animals and the soil compaction is becoming less and less.
2. Hunting. Killing animals mercilessly and selling them off reduces their numbers and increase the fear of humans
3. Genetic engineering. Modifying the cell structure of a plant or animal increases possible risk of cancer, toxicity in the soil and others.
Habitat degradation and fragmentation, introduction of exotic species and over harvesting.
These activities disrupt the natural function of a variety of species.
Humans must understand evolution to assess the effect these activities can have on various species and the environment
b. A scientific law describes what occurs every time in a situation.
c. A scientific law is constantly modified.
d. A scientific law is developed without experimentation.
Answers
The correct answer is B.
scientific law which describes what occurs every time in a situation. Scientific law always applies under same condition.
Laws differs from scientific theory because they does not posit explanation of phenomena.
Different laws takes mathematical forms. Scientific law is being associated with natural science but social sciences also contains laws.
A good example of scientific law in social sciences is Zipf's law.
Answer:
B. a law is a proven fact that cannot be changed.
Explanation:
Answers
The chemical equilibrium can take place in a close system and can not be affected by catalyst and is a reversible reaction.
The term "chemical equilibrium" describes a situation in which a chemical reaction's forward reaction rate and reverse reaction rate are equal. In other words, throughout time, the reactant and product concentrations in the reaction mixture do not change. Even if the individual reactions may still be in progress, there is no net change in the reactant or product concentrations at the point of chemical equilibrium. This occurs as a result of the equalisation of the rates at which molecules react to create products and molecules disintegrate into reactants. Even though the reaction is still taking place at the molecular level, the system is in equilibrium and it appears to have stopped.
To know more about chemical equilibrium, here:
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(2) 24 g (4) 4 g
Answers
A saturated solution is a solution that can not dissolve any more solute in it. The amount of potassium nitrate that can be dissolved to make a saturated solution is 29 gm.
What is solubility?
The capability of the solute to get dissolved in the solvent to form a saturated solution is called solubility.
The solubility of potassium nitrate in 100 gm of water at 40 degrees celsius is 64 gm. Hence, 64 gm of potassium nitrate is required in 100 gm of water to form a saturated solution.
In the question, the amount of potassium nitrate in 100gm water is 35 gm so, the amount of the potassium nitrate required more will be,
Therefore, option (1) 29 gm of potassium nitrate should be added more.
Learn more about solubility here:
The solubility of at 40 C is around 64 g in 100 g water ot 0.64 g KNO3 in 100 g water.
Therefore 64 g KNO3 in 100 g water is required for satured solution.
According to the problem there are 35 grams of KNO3 dissolved in 100 grams water
So we need 64 g-35 g= 29 g more KNO3
Hence the correct answer is 1
Solubility:
When the maximum amount of solute is dissolve in the solvent is called solubility. On the basic of solubility the solution are following types:
Saturate solution:
A solution which contains the maximum amount of dissolved solute at the equilibrium is called saturated solution.
Un-saturate solution:
A solution which contains lesser amount of solute as compare to saturated solution. It will be able to dissolver more solute.
Super -Saturate solution:
A solution which contains the more dissolved amount of solute as compare to saturated solution.