if a sample of magnesium has a mass of 60 g, how many moles of magnesium does the sample contain
Answers
Answer : The moles of magnesium will be, 2.5 moles
Explanation : Given,
Mass of magnesium = 60 g
Molar mass of magnesium = 24 g/mole
Formula used :
Now put all the given values in this formula, we get the moles of magnesium.
Therefore, the moles of magnesium will be, 2.5 moles
x moles of Mg-------------60g
x = 2,47 moles of Mg
answer: 2,47 moles of magnesium
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C. The time it takes an object to move a certain distance
D. The force that distance makes
SUBMIT
Answers
Answer:
A:force times an object displacement
Explanation:
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A force is said to do work if, when acting, there is a displacement of the point of application in the direction of the force. ... Work transfers energy from one place to another, or one form to another. The SI unit of work is the joule (J).
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The statement “Ionic crystals are extremely malleable because they contain a positively charged metal ion” is false. Ionic crystals are composed of positive and negative ions that are combined so that the numbers of positive and negative charges are equal.
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Answers
Answer:
The formula for molality is m = moles of solute / kilograms of solvent. In problem solving involving molality, we sometimes need to use additional formulas to get to the final answer. One formula we need to be aware of is the formula for density, which is d = m / v, where d is density, m is mass and v is volume
Explanation:
it is a measure of the concentration of a solute in a solution in terms of amount of substance in a specified amount of mass of the solvent. This contrasts with the definition of molarity which is based on a specified volume of solution.
Answers
the correct answer its:
random internal motion of atoms and molecules
hope it helps
Final answer:
The primary cause of diffusion is the random internal motion of atoms and molecules resulting from their thermal energy, leading substances to move from areas of high concentration to areas of lower concentration until evenly distributed. Factors like temperature and the mass of diffusing molecules affect the speed of diffusion. The process continues until it reaches a dynamic equilibrium, where there is no concentration gradient and no net movement of substances.
Explanation:
The primary cause of diffusion is the random internal motion of atoms and molecules due to their thermal energy, a concept derived from Physics. This motion allows substances to move in a way that they can evenly distribute themselves throughout a given space. As a result, diffusion is characterized by movement from high to lower concentration areas, a process that goes on until the substance is evenly distributed in a system.
Several factors can affect diffusion, such as temperature and the mass of the diffusing substance. Higher temperatures enhance the energy and therefore the movement of the molecules, leading to an increased diffusion rate. In contrast, lower temperatures decrease the energy and movement of molecules, thus reducing the diffusion rate. The mass of the molecules diffusing also plays a role - heavier molecules move slower, and therefore diffuse more slowly, whereas the reverse is true for lighter molecules.
A concentration gradient is the factor that primarily fuels the diffusion process. Greater the difference in concentration, the more rapid the diffusion. In case of solutions containing more than one substance, each type of molecule diffuses according to its unique concentration gradient, independently of other substances.
Eventually, the system reaches a stage known asdynamic equilibrium. At this stage, there's no net movement of the substance, yet the molecules continue to move around in the space. The concentration gradient no longer exists, which means that diffusion has ceased.
Learn more about Diffusion here:
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B. meniscusity.
C. viscosity.
D. capillarity.
Answers
Meniscusity the convex or concave upper surface of a column liquid, the curvature of which is caused by surface tension