11. Which molecule will balance the following equation 4 NH3​ + 5 → 4 NO + 6 H2​O
a. O
b. O2
c. H2​O
d. NO2
12. Fill in the missing number to balance the equation.
2 Fe + 3 H2​SO4​ → 1 Fe2​(SO4​)3​ + __ H2
a. 3
b. 6
c. 2
d. 4
13. Balanced chemical reactions obey the law of conservation of mass
a. True
b. False
14. If I have 8 moles of Iron atoms in the products, how many moles of Iron atoms did I start with?
a. 8
b. 16
c. 1
d. Not enough information

Which statements are true concerning mineral formation? check all that apply. the slower the cooling, the larger the crystals. the faster the cooling, the smaller the crystals. crystals formed from magma are smaller than crystals formed from lava. minerals can only form in solutions when the solution is heated deep underground. when a solution cools, elements and compounds leave the solution and crystallize as minerals. minerals formed from hot water solutions can form narrow channels in the surrounding rock.

How many absorptions would you expect to observe in the 13c nmr spectra of the following molecules? a) 3-chloropentane b) cis-4-methyl-2-pentene

Acm ruler with main graduations from 1 to 10 from left to right there are 10 secondary graduations between each of the main graduations there is a line that begins. at the left end of the ruler 10 secondary graduations to the left of the “1 main graduation the right end of the line ends on the eighth secondary graduation to the right of 3 how long is the line