You can eliminate A, C, and D almost instantly if you know that engineers are construction workers. The answer is B.
Answer:
Density is 2
Explanation:
Do the final volume of water divided by the inital
volume of water to get 4
15-11 = 4
Volume = 2
Mass = 8
Then to the equation m/v
8/4 = 2
Density = 2
13.8 billion years ago
This relic radiation is known as the cosmic microwave background radiation. The chemistry of life may have begun shortly after the Big Bang, 13.8 billion years ago, during a habitable epoch when the universe was only 10–17 million years old.
The answers are name: Cerium, symbol: Ce, atomic number: 58, and atomic mass: 140.110
Number 1 is a synthesis reaction because two compounds/elements are coming together to form one compound
