Explain why lighting a sparkler is considered a spontaneous reaction even though it doesn't stat start spontaneously

Which of the following statements is true? question 4 options: nuclear decay rates vary with the conditions of the reaction, but chemical reaction rates do not. chemical reaction rates vary with the conditions of the reaction, but nuclear decay rates do not. neither chemical reaction rates nor nuclear decay rates vary with the conditions of the reaction. both chemical reaction rates and nuclear decay rates vary with the conditions of the reaction.

How many grams of sodium chloride are in 250ml of a 2.5m naci solution

Name a brittle metal , which is used to galvanize iron