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musickatia [10]
3 years ago
7

how many moles of ammonium chloride are required for a complete reaction with 420 mol of calcium hydroxide

Chemistry
1 answer:
Oxana [17]3 years ago
3 0

3 KOH + H3PO3 = K3PO4 + 3 H2O  

moles KOH = 26.5 g/56.1 g/mol=0.472  

moles K3PO4 = 0.472/3 =0.157

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How many milliliters of a 0.275 M NaOH solution is required to react with 0.450 L of CO2 gas
padilas [110]

Volume of NaOH required to react = 145.5 ml

<h3>Further explanation</h3>

Reaction

CO₂(g) + 2 NaOH(aq)  ⇒Na₂CO₃(aq) + H₂O(l)

The volume of CO₂ : 0.45 L

mol CO₂ at STP (O C, 1 atm) ⇒ at STP 1 mol gas 22.4 L :

\tt mol~CO_2=\dfrac{0.45}{22.4}=0.02

From the equation, the mol ratio of CO₂ : NaOH = 1 : 2, so mol NaOH :

\tt mol~NaOH=\dfrac{2}{1}\times 0.02=0.04

Then volume of NaOH :

\tt V=\dfrac{n}{M}\\\\V=\dfrac{0.04}{0.275}\\\\V=0.1455~L\rightarrow 145.5~mL

5 0
3 years ago
Someone pls help me With this I will make you as brain
Artemon [7]

Explanation:

correct answer is g(x)=x+2

4 0
3 years ago
A percent composition analysis yields 46.7% nitrogen and 53.3% oxygen. What is the empirical formula for the compound
Korolek [52]
Empirical formula is the simplest ratio of whole numbers of components in a compound
calculating for 100 g of compound 
                                                     N                                   O
mass                                          46.7 g                              53.3 g
number of moles                  46.7 g / 14 g/mol                 53.3 g / 16 g/mol 
                                                  = 3.33                               = 3.33
divide by the least number of moles 
                                                3.33/ 3.33 = 1.00              3.33/3.33 = 0
number of atoms 
N - 1
O - 1
therefore empirical formula is NO
6 0
3 years ago
The undersea mountain chain where magma rises from and where new ocean floor is produced is called?
liberstina [14]

Answer:

mid-ocean ridges

Explanation:

Seafloor spreading occurs along mid-ocean ridges—large mountain ranges rising from the ocean floor.

5 0
3 years ago
Please help me on this 3 question I need help.
morpeh [17]
It is harm full to a human because it can make a person really sick and it can hurt a plant by killing it 

8 0
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