The process that ice on mount Everest goes through when heated from 10 degree f to 305 kelvin.
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if we change these values into Kelvin then
melting point of water is 273.15 K and boiling point is 373.15 kelvin..
for melting it is necessary for ice to get warm so it attains heat 10 F to 32 F...
then ice melts but during this temperature remains constant..
the energy required for melting is 333 kJ/Kg K
then water is warmed at 305 Kelvin.... :)
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Answers
Answers
The lower the number on the scale, the more acidic it is.
Zero on a pH scale is very
A. acidic, and 14 on a pH scale is very basic.
The lower the number on the scale, the more acidic it is.
Explanation:
Acidic and basic are two limits that describe a chemical property chemical. Mixing acids and bases can cancel out or compensate for their greatest effects. A substance that is not acidic nor basic is neutral. The pH scale measures how acidic or basic a substance is. The pH scale ranges from 0 to 14. Explications with a pH smaller than 7 are acidic and solutions with a pH higher than 7 are basic.
Answers
Answer:
1.54×10^20 atoms
Explanation:
It'sdonebyusingtherelation
N=n×Lwhere,
N=numberofentitiespresent
n=amountofsubstance (mole)
L=Avogadro'sconstantwhichis6.02×10^23
nowfromthequestion, given
n=0.000256
AndL=6.02×10^23
N=0.000256×6.02×10^23
N=1.54×10^20atoms
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The amount of heat absorbed by water is 188.28 J.
we know that, specific heat capacity is the amount of heat required to raise the temperature of 1 g of substance by 1 .0C
C = Q /W*ΔT
Q= C*W*ΔT
C= specific heat capacity
Q= amount of heat absorbed
W = weight of substance
ΔT = change in temperature
Specific heat capacity of water = 4.18 J/g.0C
Given that,
W = 15 g
ΔT = 3.0C
Q= C*W*ΔT
Q =4.184J/g. 0C*15g*3.0C
Q= 188.28 J
Thus, we can conclude that, the amount of heat absorbed by water is 188.28 J.
Learn more about heat capacity here:
15 g * 4.18 J/g K * 3K = 188J
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-_- Compounds n Elements -_-
A compound is a substance formed when two or more elements are chemically joined. Water, salt, and sugar are examples of compounds.
When the elements are joined, the atoms lose their individual properties and have different properties from the element they are composed Of .
- Hope that this helps out alot bro .
Answers
Answer:
The percent yield of oxygen in this chemical reaction is 73.71 %.
Explanation:
Experimental yield of oxygen gas = 115.0 g
Theoretical yield:
Mass of potassium chlorate = 400.0 g
Moles of potassium chlorate =
According to reaction, 2 moles of potassium chlorate gives 3 moles of oxygen gas.
Then 3.2653 mol of potassium chlorate will give:
Mass of oxygen gas :
Percentage yield:
The percent yield of oxygen in this chemical reaction is 73.71 %.