Yo I’m bored and I’ll probably never use this app so here’s some free points! Also if you have over 40 points then please don’t answer to get the points, thanks!!

How is 0.00235 expressed in proper scientific notation? a. 2.35 × 10-3 b. 0.235 × 10-2 c. 2.35 d. 2.35 × 103

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

98 ! and brainliest plz ! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?