Yes
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Answer:
1.77 atm
Explanation:
We have to check the <u>values that gives the problem</u>:
V= 70 L
mass =354.5 g
Molas weight= 70.9 g/mol
T=30 ºC
P= ?
We can find the <u>moles of chlorine</u> if we use the<u> molar weight</u>:
Now, we have the moles, volume, temperature therefore we can use the <u>ideal gas equation</u>:
We know the <u>R value</u>:
We have <u>“K” units for the temperature</u>, so we need to do the <u>conversion</u>:
With all the data we can plug the values into the equation:
I hope it helps!
The law of conservation of mass states that mass is an isolated system and is neither created nor destroyed.
Applying this concept on a chemical reaction means that the total mass of reactants should be equal to the total mass of the products.
In this question, we have gasoline and oxygen as reactants and we have carbon dioxide and water as products.
Based on the law, the sum of the masses of oxygen and gasoline is equal to the sum of masses of carbon dioxide and water.
Therefore,
mass of carbon dioxide and water = 22 + 86 = 108 kg
Answer: final temperatures will be
a) water 21 C
b) concrete 20.005 C
c) steel 20.008 C
d) mercury 53 C
Explanation:
Change in temp dT = dH / (mass x specific heat)
Specific heat of these materials can be found from many sources:
water = 1 kcal / kg C
concrete = 210 kcal / kg C
steel = 114 kcal / kg C
mercury = 0.03 kcal /kg C
So dT (water) from 1 kcal heat into 1 kg water = 1 kcal / (1 kg x 1 kcal/kg C) = 1 C therefore the final temperature is 20 + 1 = 21 C
But dT (steel) = 1 kcal / (1kg x 114 kcal/kg C) = 0.008 C so the final temperature is 20 + 0.008 = 20.008 C
The results for concrete and mercury are calculated in the same way
Answer: Combustion changes the potential chemical energy into kinetic energy in the form of heat. For combustion an organic wood combines with oxygen already in the air and undergoes a chemical reaction that gives off carbon dioxide,water,and energy in the form of heat and light.