Answer :
(a) The speed is, 186.287 mi/hr
(b) The speed is, 83.277 m/s
(c) The speed is, 273.22 feet/s
Explanation :
(a) We are given the speed is, 
As we know that,
By using both the conversion, we get:
The speed is, 186.287 mi/hr
(b) We are given the speed is,
As we know that,
and,
By using both the conversion, we get:
The speed is, 83.277 m/s
(c) We are given the speed is,
As we know that,
and,
By using both the conversion, we get:
The speed is, 273.22 feet/s
Periodic trends are specific patterns that are present in the periodic table that illustrate different aspects of a certain element, including its size and its electronic properties. Major periodic trends include: electronegativity, ionization energy, electron affinity, atomic radius, melting point, and metallic character. Periodic trends, arising from the arrangement of the periodic table, provide chemists with an invaluable tool to quickly predict an element's properties. These trends exist because of the similar atomic structure of the elements within their respective group families or periods, and because of the periodic nature of the elements.
Answer:
A) 
B) 0.025 mol (SCN)₂
C) 2 mol (SCN)₂
D) 
E) 3.5504 mol H₂SO₄
Explanation:
2NaSCN +2H₂SO₄ + MnO₂ → (SCN)₂ + 2H₂O + MnSO₄ + Na₂SO₄
A) A conversion factor could be , as it has the units that we want to <u>convert to in the numerator</u>, and the units that we want to <u>convert from in the denominator</u>.
B) 0.05 mol NaSCN * = 0.025 mol (SCN)₂
C) With 4 moles of NaSCN and 3 moles of MnSO₄, the<em> reactant </em>is NaSCN so we use that value to calculate the moles of product formed:
4 mol NaSCN * = 2 mol (SCN)₂
D)
E) 1.7752 mol MnSO₄ * 
= 3.5504 mol H₂SO₄
Answer:
The ancient Greeks believed that fire was one the four basic elements that composed all things in the universe. In the mythology of virtually every culture, fire is a sacred substance that gives life or power. Fire is not, in fact, a substance. When you gaze at the leaping flames of a campfire, you’re observing not an object, but a process – a chemical reaction. It’s the same chemical reaction that occurs when a cut apple left on the counter turns brown, when silver tarnishes or when an iron nail rusts.
That process is oxidation: combining oxygen with another substance. The defining difference between a fire and your half-eaten apple is speed: fire is an oxidation process that happens very fast, so that light, heat and sound are released — often with enough force and majesty to justify the ancients’ reverence.The sudden release of energy causes temperatures to rise, sometimes by thousands of degrees. And it also results in smoke, the toxic waste of fire’s leftovers.
The fire triangle and the fire tetrahedron
Fire TetrahedronThe fire triangle identifies the three needed components of fire:
fuel (something that will burn)
heat (enough to make the fuel burn)
and air (oxygen)
Explanation: i hope this helps sry its long
When a liquid is frozen, the atoms in the liquid slow their movement due to lack of energy so the substance becomes hard.
