What is hydrolysis?

How many moles of Hydrogen gas must be used to make 0.75 mol of NH3? N2+3H2 --->2NH3 *

sladkih [1.3K]

Answer:

1.125 moles of hydrogen are needed.

Explanation:

Given data:

Number of moles of ammonia formed = 0.75 mol

Number of moles of hydrogen needed = ?

Solution:

Chemical equation:

N₂ + 3H₂ → 2NH₃

Now we will compare the moles of ammonia and hydrogen.

NH₃ : H₂

2 : 3

0.75 : 3/2×0.75 = 1.125 mol

1.125 moles of hydrogen are needed.

5 0

2 years ago

A compound is made of 49.31% C, 43.79% 0 and the rest hydrogen. The molar

Alexeev081 [22]

Explanation:

49.31 + 43.79 = 93.10

finding the percentage of hydrogen in the compound hence 100-93.10 =6.9

therefore 6.9 percent of hydrogen is present in the compound

assuming that the compound is in 100 g so the elements present would be 49.31g of C , 43.79g of O and 6.9g of H

no. of moles of C = given mass÷molar mass

= 49.31 ÷ 12

=4.11 mol

no of moles of O = givem mass ÷molar mass

=43.79÷ 16

=2.73 mol

no. of moles of H =6.9÷1

=6.9 mol

dividing the no. of moles of each element by the least count of the elemnt to get the ratio of the simple whole numbr

therefore

so by dividing we get 1:1:2 of C:O:H

the empirical formula is CH2O

empirical formula mass of CH2O IS

= (12)+(2×1)+(16)

= 12+2+16

=30 G/MOL

n= molar mass of the compound ÷ empirical formula mass of the compound

so, n= 146.1 ÷30

n=5

molecular formula = n×empirical formula

molecular formula= 5×CH2O

molecular formula=C5H10O5 (ribose is the compound)

8 0

2 years ago

Please help chemistry!!

emmasim [6.3K]

Answer:

b) carboxylic acid ..........

4 0

2 years ago

Calculate the percentage of yield when 20 grams of sodium chloride solution reacts with an excess amount of silver nitrate solut

Lady bird [3.3K]

%yield = 91.8

<h3>Further explanation</h3>

Given

20 g NaCl

45 g AgCl

Required

%yield

Solution

Reaction

NaCl + AgNO₃ ⇒ AgCl + NaNO₃

mol NaCl :

= mass : MW

= 20 g : 58,44 g/mol

= 0.342

mol AgCl from equation :

= 1/1 x mol NaCl

= 1/1 x 0.342

= 0.342

Mass AgCl(theoretical) :

= mol x MW

= 0.342 x 143,32 g/mol

= 49.02 g

%yield = (actual/theoretical) x 100%

%yield = (45/49.02) x 100%

%yield = 91.8

7 0

2 years ago

In an exothermic reaction, heat can be considered a __________.

GenaCL600 [577]

Answer is: product of reaction.
There are two types of reaction: endothermic reaction (chemical reaction that absorbs more energy than it releases) and exothermic reaction (chemical reaction that releases more energy than it absorbs).
According to Le Chatelier's principle when the reaction is exothermic heat is included as a product.

7 0

3 years ago

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What is hydrolysis?​

What is hydrolysis?