Answer:
Explanation:
Molar mass of all the elements are given in small below the name of that element. Eg. For C, molar mass 12.011 gm etc.
So, molar mass of C2H4O2 = (2× 12.011)+(4×1.008)+(2×15.999) = 60.052 gm
Now molar mass of O present in this molecule= 2×15.999 =31.998 gm
60.052 gm molecule contain 31.998 gm oxygen
So, 100 gm molecule contains (31.998/60.052)×100 gm = 53.28 %
Answer:
Atoms of metal elements give away electrons in their reactions to form positive ions. The ions formed have a full outer electron shell, so are very stable.
Explanation:
To become stable, the metal atom wants to get rid of one or more electrons in its outer shell. ... Alternately, an atom that loses electrons becomes a positively charged ion (aka cations). The particles in an ionic compound are held together because there are oppositely charged particles that are attracted to one another.
It happens due to the inner resistance. Resistance causes heating of tungsten filament and with more resistance, a light bulb produces more light.
Answer:
I'm pretty sure it's Density
Explanation:
Density differences in water masses due to temperature and salinity variations which makes a process known as thermohaline circulation. These currents move water through the ocean taking nutrients, oxygen, and heat with them.