Answer: A: Explaining natural events using facts and data AND B:Developing theories using many lines of evidence
Explanation: trust me.
 
        
             
        
        
        
Answer:
 A sample of helium gas has a volume of 620mL at a temperature of 500 K. If we ... to 100 K while keeping the pressure constant, what will the new volume be?
Explanation:
 
        
             
        
        
        
10.0gNaCl/2.0Lsolution= 5.0g/L
        
             
        
        
        
Answer:
                      Mass = 15.20 g of KCl
Explanation:
                     The balance chemical equation for the decomposition of KClO₃ is as follow;
                                             2 KClO₃ = 2 KCl + 3 O₂
Step 1: Calculate moles of KClO₃ as;
Moles = Mass / M/Mass
Moles = 25.0 g / 122.55 g/mol
Moles = 0.204 moles
Step 2: Find moles of KCl as;
According to equation,
                   2 moles of KClO₃ produces  =  2 moles of KCl
So,
                0.204 moles of KClO₃ will produce  =  X moles of KCl
Solving for X,
                        X = 2 mol × 0.204 mol / 2 mol
                        X = 0.204 mol of KCl
Step 3: Calculate mass of KCl as,
Mass = Moles × M.Mass
Mass = 0.204 mol × 74.55 g/mol
Mass = 15.20 g of KCl
 
        
             
        
        
        
B
Electrons are found in shells or orbitals that surround the nucleus of an atom