According to the forces of attraction, in the process of sublimation the substance changes from solid to gaseous form directly.
Forces of attraction is a force by which atoms in a molecule combine. it is basically an attractive force in nature. It can act between an ion and an atom as well.It varies for different states of matter that is solids, liquids and gases.
The forces of attraction are maximum in solids as the molecules present in solid are tightly held while it is minimum in gases as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.
The physical properties such as melting point, boiling point, density are all dependent on forces of attraction which exists in the substances.
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Sublimation is like the changing a solid into a gas without passing through the liquid phase. To sublime a substance, a specific energy has be transferred to the via heat or work.
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A.Genus
B.Species
C.Group
Answer:
A and B
Explanation:
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Answer:5
Explanation:The pnictogen group, or nitrogen group, is located in column 15 of the periodic table. This family consists of the elements nitrogen, phosphorus, arsenic, antimony, bismuth, and ununpentium (N, P, As, Sb, Bi, and Uup, respectively). Each member of this family contains five valence electrons.
Nitrogen is found to have either 3 or 5 valence electrons and lies at the top of Group 15 on the periodic table. It can have either 3 or 5 valence electrons because it can bond in the outer 2p and 2s orbitals.
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You didn’t show the cylinder containing water, so I created one that you can use as a model (see image).
The water level was originally at 37 mL.
Then you added the ball, and it displaced its volume of water.
The new volume reading is 52 mL, so
Volume of ball = volume of displaced water = 52 mL – 37 mL = 15 mL.
Lowering a 21g ball with a volume of 15 cm³ into water in a cylinder raises the water level due to the displaced water volume, illustrating Archimedes' principle.
When a ball is lowered into a cylinder of water, it displaces water equal to its own volume, based on Archimedes' principle. The principle states that the buoyant force acting on an object in a fluid is equal to the weight of the fluid displaced by the object.
In this scenario, a ball with a mass of 21g and a volume of 15 cm³ is immersed in the water-filled cylinder. Initially, the water level in the cylinder is at a certain height. As the ball is lowered into the water, it displaces an amount of water equal to its own volume, causing the water level in the cylinder to rise.
The sketch on the right would depict the ball submerged in the water, and the new water level higher than the initial level. The increased water level is a result of the volume of water displaced by the submerged ball.
This phenomenon is essential in understanding buoyancy and the principle behind why objects float or sink in fluids. The upward force exerted by the water (buoyant force) counteracts the weight of the submerged object, leading to changes in water levels.
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B. 0.588 mol Ba
C. 68.4 mil Xe
D. 1.57 mol S
Answer:
Mass (m) = Number of moles(n) × Molar mass (M)
A. 6.65 mol W
M (W) = 184 g/mol
n = 6.65mol
mass of W = 6.65 × 184 = 1223.6g
B. 0.588 mol Ba
M(Ba) = 137g/mol
n = 0.588 mol
mass of Ba = 0.588 × 137 = 80.556g
C. 68.4 mol Xe
M(Xe) = 131g/mol
n = 68.4 mol
mass of Xe = 68.4 × 131 = 8960.4g
D. 1.57 mol S
M(S) = 32.1 g/mol
n= 1.57 mol
mass of S = 1.57 × 32.1 = 50.397g
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Molar mass is used to calculate the mass of an elemental sample. For the elements Tungsten (W), Barium (Ba), Xenon (Xe), and Sulphur (S), the masses are 1221.53 grams, 80.7 grams, 8982.216 grams, and 50.35 grams respectively.
The mass of an elemental sample can be calculated by multiplying the number of moles by the molar mass of the element. Molar mass, measured in grams/mole, represents the mass of one mole of a given substance.
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