I think the answer is A. Hope that helped :)
        
             
        
        
        
Answer:
metal can hold heat keep it near fire
 
        
             
        
        
        
Answer:The ideal gas law is represented mathematically as: PV=nRT. P- pressure, V- volume, n-number of moles of gas, R- ideal gas constant, T- temperature. 
Explanation:The ideal gas law is used as a prediction of the behavior of many gases, when subjected to different conditions.
he ideal gas law has so many limitations. 
An increase in the pressure or volume, decreases the number of moles and temperature of the gas. 
Empirical laws that led to generation of the ideal gas laws, considered two variables and keeping the others constant. This empirical laws include, Boyle's law, Charles's law, Gay Lusaac's law and Avogadro's law.
 
        
                    
             
        
        
        
A. chemical energy into thermal energy
        
                    
             
        
        
        
A chemist is using a solution of HNO₃ that has a pH of 3.75. what is [H⁺] for the solution is 1.7 × 10⁻⁴M.
<h3>How do we calculate the [
H⁺]?</h3>
Concentration of H⁺ ion will be calculated by using the below equation of pH as:
pH = -log[H⁺]
or [H⁺] = 
Given that, pH = 3.75
So concentration of H⁺ ion will be calculated as:
[H⁺] = 
[H⁺] = 1.7 × 10⁻⁴M
Hence concentration of H⁺ ion is 1.7 × 10⁻⁴M.
To know more about pH & [H⁺], visit the below link:
brainly.com/question/8758541