Answer:
Explanation
Comment
Normally you would just use m*c*delta T. But the c is the same in both cases, so you need just use m*deltaT
Givens
25 degrees
m = ?
T = 25
t = final temp = 75
93 degrees
m = 250
T = 93
t = final temp = 75
Solution
(t - 25)*m = (93 - t) * 250 Remove the brackets
75*m - 25m = 93*250 - 250*75 Combine the right
m(75 - 25) = 23250 - 250*75
50 m = 23250 - 18750 Combine
50 m = 4500 Divide both sides by 50
50*m/50 = 4500/50
m = 90
Answer: 90 grams are needed.
Rusting of iron is the most familiar example of corrosion. It is a process in which an iron reacts with atmospheric oxygen and moisture to form a reddish brown substance iron oxide, which is commonly known as rust.
Answer:
It would produce ethane (CH₃CH₃)
Explanation:
Ethylmagnesium bromide (CH₃CH₂MgBr) is a Grignard's reagent.
It is a highly reactive substance, and as any alkylmagnesium bromide
(R-CH₂MgBr) it reacts with water to produce an alkane (R-CH₃). R stands for any carbon structure bonded to that functional group.
Predators? I just looked it up lol
A) Water has two hydrogen atoms and one oxygen atom - Molecular composition.
Water is chemical compound with definite and constant composition with distinct chemical properties.
B) Gasoline catches fire - Flammability.
Gasoline isvolatile, flammable organic mixture.
C) High lead levels in a lake kill fiss - Toxicity.
For example, oil refineries and chemistry industry produce a lot of toxic chemical waste which is released into environment.
D) The burning of coal releases heat - Heat of combustion.
For example, coal power plants use coal to heat water into steam, that steam than move a steam turbine, which generate electricity.
