The answer is theory because it says if and that means theory
Answer:
This approximation of mass can be used to easily calculate how many neutrons an element has by simply subtracting the number of protons from the mass number. Protons and neutrons both weigh about one atomic mass unit or amu. Isotopes of the same element will have the same atomic number but different mass numbers.
Explanation:
B I think lol when something changes the state of matter
Answer:
<h3>spontaneously precipitate</h3>
An arrow pointing down (as in PbI2?) indicates that the product will spontaneously precipitate from the solution. ("Precipitate," in this sense, means the formation of a solid from the combination of two aqueous solutions.)
Answer:
Explanation:
Force can be found by multiplying the mass and the acceleration.
The mass of the sled is 300 kilograms and the acceleration is 2 meters per second squared.
Multiply.
1 kilogram-meter per second squared is equal to 1 Newton. Therefore, 600 kilograms-meter per second squared is equal to 600 Newtons.
The force used on the sled is 600 Newtons.
