Answer:
exothermic
Explanation:
heat/energy is released when it burns.
6.023 × individual carbon atoms are there in one mole of carbon.
Mass of a 1 atom= 12 amu
1 amu = 1.66 × gm
∴ 12 amu =1.99 × gm
∴Mass of a 1 atom=1.99 × gm
Mass of C in 1 mole = 12 gm
∴Total number of atoms of carbons in 1 mole = 12 ÷ 1.99 ×
∴Total number of atoms of carbons in 1 mole= 6.023 × atoms
6.023 × individual carbon atoms are there in one mole of carbon.
The number 6.023 × is known as Avogadro's number, which represents the number of individual atoms present in a one mole of substance with respect to atoms.
Learn more about Avogadro's number here...
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Mass of solute = 35 grams
Mass of solution = mass of nacl + mass of water = 35.8 + 184 = 219.8 grams
Concentration = mass of Nacl x 100/mass of solution.
= 35x100/219.8 = 15.92%.
Hope this helps you.
Answer. Answer: By adding more carbon dioxide to the atmosphere, the atmosphere becomes more "closed" to energy passing through it, absorbing more. Therefore, thermal energy that once would have been allowed to escape into space is instead absorbed by carbon dioxide and used to heat the Earth. So it’s B
Answer:
specific weight = 49.7 lb/ft^3
specific gravity = 0.797
Explanation:
From Appendix A,
pk = 1.58 slug/ft^3
pea = 1.53 slug/ft^3
volume of kerosene is
Vk = 14 ft^3 - 10 ft^3 = 4 ft^3
The total weight of the mixture is therefore
W = pk g Vk + pea g Vea
= (1.58 slug/ft3) (32.2 ft/s^2) (4 ft^3) + (1.53 slug/ft^3) (32.2 ft/s^2) (10 ft^3)
= 696.16 lb
The specific weight and specific gravity of the mixture are
γm = W
/V
γm = 696.16 lb/ 14 ft^3 = 49.73 lb/ ft^3 = 49.7 lb/ft^3
Sm = γm / γv
Sm = 49.73 lb/ft^3/ 62.4 lb/ft^3 = 0.797