Answer:
b 13kg/m³ is the answer to this question
Answer:
Decreases
Explanation:
An element's oxidation number decreases because it gained electrons.
Answer:
Samira's model correctly demonstrates how the properties changed with the rearrangement of the atoms. However not all atoms are accounted for. There is a missing reactant.
Explanation:
Samira's model correctly demonstrated how the atoms in two compounds reacted to form two new products. However, the elements present in the reactants side should be the elements that make up the new products in the product side. But as the diagram shows, Sameera has mistakenly added a new element to one of her products which will be wrong.
Answer:
Helium is in the __1__ period. All elements in this period have __8__ shells around the nucleus. Also giving brainiest :)
