Answer:
Answer is A) The sentence is correct as written
Explanation:
b. 17
c. 18
d. 19
(2) 2.0-L cylinder of CH4(g)
(3) 1.5-L cylinder of NH3(g)
(4) 4.0-L cylinder of He(g)
2.0-L cylinder of CH₄ (g) contains the same number of gas molecules at STP as a 2.0-liter rigid cylinder containing H₂(g) at STP.
It is a hypothetical approximation of the behavior of many gases under many condition, and expressed as PV = nRT.
As in the question it is given that rigid cylinder have the same temperature and pressure i.e. have a standard temperature and pressure. According to the Avogadro's Law, under the same temperature and pressure if equal amount of gas is taken then no. of moles of gases are same.
Ideal gas equation PV = nRT justifies the above statement.
So, from the given 2.0-L cylinder of CH₄ (g) contains the same number of gas molecules at STP.
Hence, option (2) is correct i.e. 2.0-L cylinder of CH₄ (g) contains the same number of gas molecules.
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Answer:
solute, solvent, solution
solute dissolve in a solvent and the end product is called solution
The element that has the electron configuration is Darmstadtium.
Since An element with the electronic configuration 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²4f¹⁴5d¹⁰6p⁶7s²5f¹⁴6d⁸ contains 110 electrons in its electron shells.
Also, the element should be a neutral atom, this number should also equal to its atomic number. Therefore, its atomic number is 110.
The element in the periodic table that has an atomic number of 110 is Darmstadtium, a d-block element, thus a transition metal.
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Answer:
Darmstadtium
Explanation:
An element with the electronic configuration 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²4f¹⁴5d¹⁰6p⁶7s²5f¹⁴6d⁸ has 110 electrons in its electron shells.
Since the element is a neutral atom, this number is also equal to its atomic number. Therefore, its atomic number is 110.
The element in the period table that has an atomic number of 110 is Darmstadtium, a d-block element, thus a transittion metal. It also belong to period 7 in the Periodic table of elements.