Multiple by 2 because it was give u right answer
The answer is B because glucose is an energy source and during photosynthesis, water combines with sunlight and carbon dioxide. You can observe by the chemical equation for photosynthesis : 6CO2 + 6H2O + light energy = C6H12O6 + 6O2
Answer:
9.97 g (corrected to 3 significant figures.)
Explanation:
mass = no. of moles x molar mass
Atomic mass of Barium = 137.327; oxygen = 15.999,
so the molar mass of BaO = 137.327 + 15.999
=153.326
Hence, the mass is
0.065 x 153.326
=9.97 g (corrected to 3 significant figures.)
Octet rule states that an atom or element in the periodic table tends to combine with other atoms or elements and tries to attain 8 electrons in the outermost shell like the noble gas to attain stability.
1. So those elements which can easily attain octet rule are highly active.
eg: Sodium and chlorine.
Sodium has one outermost electron and can attain octet rule by losing this one electron
Chlorine has 7 outhermost electron and can attain octet rule by gaining one electron.
So Sodium and Chlorine are highly active as they can easily attain stability by losing or gaining one electron to attain octet.
2. And thus octet rule easily explains why an element or atom is highly active.
There are two main types of physical weathering: Freeze-thaw occurs when water continually seeps into cracks, freezes and expands, eventually breaking the rock apart. Exfoliation occurs as cracks develop parallel to the land surface a consequence of the reduction in pressure during uplift and erosion.