During a lab, we take the initial volume of water in a graduated cylinder to be 23.4 ml. After adding a screw to the water, it then raises to 27.6 ml. If the mass of the screw was found to be 7.1 grams- what would the density of the screw to be in g/ml? A) 3.89
B) 29.8
C) 3.40
D) 1.7

the answer is c i believe

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.

answer: i have one answer

acids are substances that ionize (break off) in an aqueous solution to produce hydrogen (h+) ions

explanation:

hope this and sorry i could only come up with one answer!