Answer:
Below in bold.
Explanation:
1 mole of an element contains 6.022* 10^23 atoms.
Ethanol has the molecular formula C2H5OH.
So we have 2 carbon atoms, 6 hydrogen atoms ans 1 oxygen atom in the molecule.
Using molar masses the mass of carbon in 36.7 g of C2H5OH
= [(2 * 12.011) / (2*12.011 + 6*1.008 + 15.999)] * 36.7
= [(2 * 12.011) /46.069] * 36.7
= 19.14 g
So the number of carbon atoms = (19.14 / 12.011) * 6.022* 10^23
= 9.596 * 10^23. (Answer).
Using molar masses the mass of hydrogen in 36.7 g of C2H5OH
= [(6 * 1.008) / (46.069)] * 36.7
= 4.818 g
So the number of hydrogen atoms = (4.818 / 1.008) * 6.022* 10^23
= 2.878 * 10^24 (Answer).
Using molar masses the mass of oxygen in 36.7 g of C2H5OH
= [(15.999) / (46.069)] * 36.7
= 12.745 g
So the number of hydrogen atoms = (12.745 / 15.999) * 6.022* 10^23
= 2.924 * 10^24 (Answer).
Answer:
potassium sulphate:
It's used to help plants grow; in other words, it's a fertilizer. Potassium sulfate is the preferred fertilizer for specific kinds of crops, ones that do not tolerate fertilizers with chloride in them. Thus, it's used to help grow some types of fruits, vegetables, and tobacco.
silica glass:
Silica glass is used as a lining of melting furnace burners, as blocks with windows for pyrometers, furnace vaults, and the like. The crystallization of silica glass, which takes place at high temperatures, is made use of in its application as a building material for melting furnaces.
sodium laurly sulphate:
Sodium laurly sulphate is an effective surfactant used in household cleaning products to help remove oily stains and residues, such as food stains in carpets. Because of its ability to break down oil and grease, SLS also is an ingredient in many industrial cleaning products, such as engine degreasers and industrial strength detergents.
Hope I have helped you
One of the amazing products that have been developed under Van Der Waals forces is the <span>suction cup</span> that is used as an ankle and is used by workers as a safety gear on cleaning or constructing high-rise buildings.
<span>Like geckos, they can scamper up walls, scuttle along ceilings and hang upside down on polished glass surfaces.</span>
Using p1v1/t1=p2v2/t2
p1=175kpa
p2=215kpa
v1=19l
v2=?
t1=25+273=298
t2=30+273=303
175x19/298=215xv2/303
8.808x303=215v2
2669/215=v2
v2=12.4l
<span>Primarily what causes water to conduct electricity are the ions present in the water itself.</span>