Determine the mass of each of the following:
(a)0.0146 mol koh
(b)10.2 mol etane, c2h6
(c)1.6 x 10-3 mol na2so4
(d)6.854 x 103 mol glucose, c6 h12 o6
(e)2.86 mol co(nh3)6 cl3

A) 0.82 g

B) 306 g

C) 0.23 g

D) g

E) 764 g

Explanation:

A) Upon consulting a periodic table one can find the atomic masses of each element present at a given molecule.

H=1.00 g/mol K=39.10 O=16.00

By adding the masses of the atoms in a molecule, we get its molecular weight.

KOH molecular mass is 1.00+39.10+16 = 56.10 g/mol

 Therefore the mass in 0.0146 mol of KOH is:

56.10 g/mol x 0.0146 mol = 0.82 g

B) Upon consulting a periodic table one can find the atomic masses of each element present at a given molecule.

H=1.00 g/mol C=12.01

By adding the masses of the atoms in a molecule, we get its molecular weight.

C2H6 molecular mass is 6x1.00+2x12.01= 30.02 g/mol

 Therefore the mass in 10.2 mol of KOH is:

30.02 g/mol x 10.2 mol = 306 g

C) Upon consulting a periodic table one can find the atomic masses of each element present at a given molecule.

Na=22.99 g/mol S=32.07 O=16.00

By adding the masses of the atoms in a molecule, we get its molecular weight.

Na2SO4 molecular mass is 2x22.99+32.07+4x16.00=142.05 g/mol

 Therefore the mass in 0.0016 mol of Na2SO4  is:

142.05 g/mol x 0.0016 mol = 0.23 g

D) Upon consulting a periodic table one can find the atomic masses of each element present at a given molecule.

H=1.00 g/mol C=12.01  O=16.00

By adding the masses of the atoms in a molecule, we get its molecular weight.

 C6H12O6 molecular mass is 16x1.00+6x12.01+6x16.00= 184.06 g/mol

 Therefore the mass in 6854 mol of C6H12O6 is:

184.06 g/mol x 6854 mol = g

E) Upon consulting a periodic table one can find the atomic masses of each element present at a given molecule.

H=1.00 g/mol Cl=35.45 g/mol Co=58.93 g/mol N=14.01 g/mol

By adding the masses of the atoms in a molecule, we get its molecular weight.

 Co(NH3)6 Cl3 molecular mass is 58.93+6x14.01+18x1.00+3x35.45=267.34 g/mol

 Therefore the mass in 2.86 mol of Co(NH3)6 Cl3 is:

267.34 g/mol x 2.86 mol = 764 g

i'm hoping this is like a multiple answer question. if it is then it would be, the location of the plants and also the height of the plants since one she wants to know where in her garden the chamomile grows best. but also to see which plants grew better in the location she also has to measure the plant itself. (if you can only choose one answer than it would be c).

they are called fossil fuels