To instill a high degree of personal honor, self-reliance, and confidence in each cadet by presenting a military environment in which cadets will be forced to rely upon themselves and their shipmates to study, work, and learn.
(b) Liquid hexane burns in oxygen gas to form carbon dioxide gas and water vapor. True/False
Liquid hexane burns in oxygen gas to form carbon dioxide gas and water vapor.TRUE.
This is the complete combustion reaction of hexane, which proceeds according to the following equation.
C₆H₁₄(l) + 9.5 O₂(g) → 6 CO₂(g) + 7 H₂O(g)
If the combustion were incomplete, instead of carbon dioxide, the product would be carbon monoxide or carbon.
What are 4 molecules made of the same substance
CaO (calcium oxide)
HOPE IT HELPS
What is the difference between solid, liquid and ice? Use ice, water and steam as examples.
Answer: A solid is something that can hold its own shape and is hard to compress (squash). However, ice is different from most solids because its molecules are less densely packed than in liquid water so ice takes up a little more space than the same amount of liquid water. This is why ice floats.
Explanation: Hope it works!!!!!
QUICK WILL MARK BRAINLIEST!!Match each of the unknown ions to its appropriate description.
A− A) A nonmetal that gained one electron B+ B) A metal that lost one electron C2− C) A metal that lost two electrons D2+ D) A nonmetal that gained two electrons
A mental that lost two electrons just joking I don't k ow but I think it ain't the first o e because of comment sense to the 5th power
A and B
metal form ion by lossing elecron
non metal form ion by gaining electron
Please help me i’m in need!
Which element has the LARGEST atomic radius? Be Ca Ba Sr
it's Fr. which is francium.
An atomic radius is defined to be one-half the distance between the nuclei of two atoms, assuming a spherical atom since, according to the quantum mechanical model of the atom, electrons are located within a probability cloud surrounding the nucleus which has no sharp boundary.
Notice that, in general, there are two main trends of atomic radii in the Periodic Table of Elements.
The first trend illustrates that atomic radii increase when going down a group in the periodic table. This is because when moving downwards in a group, every subsequent atom gains an additional principal energy level, which leads to electron shielding. Electron shielding refers to the decreased attraction between the electrons that occupy the higher principal energy level and the nucleus of the atom due to the shielding of electrons in the lower principal energy level.
The second trend outlines that atomic radii decrease when going across the period from left to right. For elements within a period, individual electrons occupy the same principal energy level. Likewise, when an electron is added, a new proton is also added to the nucleus, providing the nucleus with a stronger positive charge and hence leading to a higher effective nuclear charge. This increase in nuclear attraction pulls the electrons closer towards the nucleus, leading to a decrease in atomic radius.
Therefore, given the option between beryllium, calcium, barium, and strontium, the element with the largest atomic radius is barium since all the elements given are in Group II, however, barium is the element furthest down the group and therefore have electrons occupying the highest principal energy level compared to other elements.