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:
A. The relationship between the Sun,Moon,and Earth
Explanation:
330feet
Explanation:
Given parameter:
Length of field = 110yards
problem:
Convert the given length to feet
Both feet and yard are units of measurement of the length of a body. They describe how long a body is.
1yard = 3 foot
110yard = 3 x 110 = 330feet
A length of 110yards is 330feet
learn more:
Conversion brainly.com/question/1548911
#learnwithBrainly
Answer:
1. Increase the temperature of the oil
2. Evaporation of water from the oceans
3.Renewable resources are those that can be recreated or replenished.
4. 5 Ways to Reduce Your Carbon Footprint
learn the 5 R's: refuse, reduce, reuse, rot, recycle: Going zero waste is a
great step towards combating climate change.
bike more and drive less
conserve water and protect our waterways
eat seasonally, locally, and more plants
switch to sustainable, clean energy:
Explanation:
Answer is: halogens ans noble gases.
The nonmetals are divided into two categories: reactive nonmetals and noble gases.
Halogen elements are in group 17: fluorine (F), chlorine (Cl), bromine (Br) and iodine (I). They are very reactive and easily form many compounds.
Noble gases are in group 18: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) and radon (Rn). They have very low chemical reactivity.