How many atoms are in a 0.50 g sample of helium
1 answer:
0.5 G is your answer for this question
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Answer:
A. 6.25moles
B. 0.78moles
C. 0.32moles
D. 0.15moles
E. 0.43moles
Explanation:
use
A. He
B. O2
C. Al(OH)3
27+ 3(17) = 78 25/78 = 0.32 moles D. GaS3
70+3(32) = 166 25/166 = 0.15moles E. C4H10
4(12)+10(1) =58 25/58 = 0.43moles
Answer:
During ice ages, the most characteristic change to the planet has been the formation and spread large ice sheets and glaciers across much the Northern Hemisphere.
Answer: 5.47m/s
Explanation:
Mass = 72.3kg
K.E = 1080.0J
V =?
K.E = 1 /2MV^2
V^2 = 2K.E /M = (2x1080)/72.3
V = sqrt [(2x1080)/72.3]
V = 5.47m/s
Positive ion with a radius smaller than the radius of the atom
Answer:
oxidation:Ti to Ti Reduction:O2 toO2
Explanation:
<em>oxidation loses electron while Reduction gains electron</em>
