D. How many moles of NaOH will result if 15 moles or sodium are used!
STANDARDIZED TEST PREP
Circle the letter of the best answer.
1. For the general chemical equation 2A + 3B 4C+D, how many moles of A are required to produce
18.4 mol of C?
a. 9.2 mol
b. 13.8 mol
c. 36.8 mol
d. 73.6 mol
2. For the chemical reaction represented by the equation CH, + 502 → 300, + 4H20, how many moles
of O, are required to react with 16.4 moles of C, H,?
a. 3.28 mol
b. 21.4 mol
c. 65.6 mol
d. 82 mol
Modem Chemistry

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.

answeridentity;

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.  

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.