Explanation:
13 are the number of atoms
 
        
             
        
        
        
A polyatomic ion. 
Examples: Sulfate, Sulfite, Nitrate, Nitrite...
 
        
             
        
        
        
Answer:
249 L
Explanation:
Step 1: Write the balanced equation
C₃H₈(g) + 5 O₂(g) → 3 CO₂(g) + 4 H₂O(g)
Step 2: Calculate the moles of CO₂ produced from 5.00 moles of C₃H₈
The molar ratio of C₃H₈ to CO₂ is 1:3. The moles of CO₂ produced are 3/1 × 5.00 mol = 15.0 mol
Step 3: Convert "30.0°C" to Kelvin
We will use the following expression.
K = °C + 273.15
K = 30.0°C + 273.15 = 303.2 K
Step 4: Calculate the volume of carbon dioxide
We will use the ideal gas equation.
P × V = n × R × T
V = n × R × T/P
V = 15.0 mol × 0.0821 atm.L/mol.K × 303.2 K/1.50 atm
V = 249 L
 
        
             
        
        
        
Answer:
 moles
 moles 
Explanation:
The reaction equation is given as: 
       4NH₃   +  5O₂  →  4NO  +  6H₂O 
The number of moles of O₂ that completely reacted is given as 1 mole 
To solve this problem, we are going to use a stoichiometric approach from the balanced reaction equation: 
          5 moles of O₂ will react completely to produce 4 moles of NO
         1 mole of O₂ will therefore react to produce  x mole of NO
                5x  = 4 
                  x  =  moles of NO
 moles of NO
 
        
             
        
        
        
Yes, remember a chemical reaction is whenever one or more substances combine together to form a different substance. So whatever you put together and form something new is called a chemical change/reaction. Examples such as rusting of Iron, expired milk(going sour), Baking cake and many more to think about
Hope it helps