Chemistry, 03.07.2019 06:00 sshweeja

Select all the correct answers. which compounds have the empirical formula ch2o? a. c2h4o2 b. c3h6o3 c. ch2o2 d. c5h10o5 e. c6h12o6

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Answer from: demetriascott20

Compounds having the same empirical formula CH_2O are:

$C_2H_4O_2,C_3H_6O_3,C_5H_{10}O_5,C_6H_{12}O_6$

Explanation:

Empirical formula tells us about the proportion of the elements present in the compound but it do not tells us about the actual numbers of atoms of the elements present in the compound.

In given empirical formula CH_2O that is proportion of C:H:O = 1:2:1

In C_2H_4O_2 the proportion of C:H:O =2:4:2= 1:2:1

In C_3H_6O_3 the proportion of C:H:O =3:6:3= 1:2:1

In CH_2O_2 the proportion of C:H:O =1:2:2= 1:2:2

In $C_5H_{10}O_5$ the proportion of C:H:O =5:10:5= 1:2:1

In $C_6H_{12}O_6$ the proportion of C:H:O =6:12:6= 1:2:1

Compounds having the given empirical formula CH_2O are:

$C_2H_4O_2,C_3H_6O_3,C_5H_{10}O_5,C_6H_{12}O_6$

Answer from: HaileyAnn04

The chemical compounds that have the empirical formula CH_2O are:

A.C2H4O2

B.C3H6O3

D.C5H10O5

E.C6H12O6

An empirical formula can be defined as a formula that gives the smallest and simplest whole number ratio of the atoms of a chemical element found in a chemical compound.

The simplest whole number ratio of the atoms of CH_2O is:

CH_2O = 1:2:1

1 atom of carbon.2 atoms of hydrogen molecule.1 atom of oxygen.

For C_2H_4O_2 :

C_2H_4O_2 = 2:4:2 = 1:2:1

For C_3H_6O_3 :

C_3H_6O_3 = 3:6:3 = 1:2:1.

For CH_2O_2 :

CH_2O_2 = 1:2:2 = 1:1:1 (Incorrect)

For $C_5H_{10}O_5$ :

$C_5H_{10}O_5$ = 5:10:5 = 1:2:1

For $C_6H_{12}O_6$ :

$C_6H_{12}O_6$ = 6:12:6 = 1:2:1

Note:

C is the chemical symbol of carbon.H is the chemical symbol of hydrogen.O is the chemical symbol of oxygen.

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Answer from: Quest

n2(g) + 3h2-> 2nh3(g) this is the balanced equation

note the mole ratio between n2, h2 and nh3. it is 1 : 3 : 2 this will be important.

moles n2 present = 28.0 g n2 x 1 mole n2/28 g = 1 mole n2 present

moles h2 present = 25.0 g h2 x 1 mole h2/2 g = 12.5 moles h2 present

based on mole ratio, n2 is limiting in this situation because there is more than enough h2 but not enough n2.

moles nh3 that can be produced = 1 mole n2 x 2 moles nh3/mole n2 = 2 moles nh3 can be produced

grams of nh3 that can be produced = 2 moles nh3 x 17 g/mole = 34 grams of nh3 can be produced

note: the key to this problem is recognizing that n2 is limiting, and therefore limits how much nh3 can be produced.

Answer from: Quest

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of rain or snow. this dry air produces a rain shadow.