Answer: Option B) Atom
Explanation:
An atom is the simplest particle of an element that can retain all the chemical properties of the element, and therefore take part in a chemical reaction.
Thus, an atom of zinc (Zn) represent fully the entire properties of elemental Zinc. For instance: an atom of zinc has a mass of 65.38g.
Answer:
The most stable conformation of the following compound has
A. An axial methyl group and an axial ethyl group.
B. An axial methyl group and an equatorial ethyl group.
C. An axial tert-butyl group.
D. An equatorial methyl group and an equatorial ethyl group.
E. An equatorial methyl group and an axial ethyl group.
Explanation:
The most stable conformation in the cyclohexane ring is the one in which both the substituents are in the equatorial position.
Among the given options,
option D An equatorial methyl group and an equatorial ethyl group.
When the substituents in the cyclohexane ring are in equatorial positions then, the steric repulsions will be reduced.
Answer is option D.
Answer:
V₂= 33581.4 ft³
Explanation:
Given data:
Initial temperature = -15 °C (-15+273 = 258 k)
Initial volume = 28500 ft³
Final temperature = 31 °C (31+273 = 304)
Final volume = ?
Solution:
According to the Charles's law
Temperature and volume are directly related to each other.
V₁/T₁ = V₂/T₂
V₂ = V₁×T₂ /T₁
V₂ = 28500 ft³ × 304 k / 258 k
V₂ = 8664000 ft³.k/ 258 k
V₂= 33581.4 ft³
According to Avogadro's number,
6.022 x 10²³ gold atoms = 1 mole of gold
Given, number of gold atoms = 2.6×10²⁵
We need to convert 2.6×10²⁵ gold atoms to moles of gold
2.6×10²⁵ gold atoms x ( 1 mole of gold / 6.022 x 10²³ gold atoms)
= 41.5 moles of gold
If you are paid $1 for every mole of gold you collect
Then you will be paid $41.5 for 41.5 moles of gold that you have collected.
Answer:
Like most Earth materials, rocks are created and destroyed in cycles. The rock cycle is a model that describes the formation, breakdown, and reformation of a rock as a result of sedimentary, igneous, and metamorphic processes. All igneous rocks start out as melted rock, (magma) and then crystallize, or freeze.
