Answer:
Both the initial and final substances are composed of atoms because all matter is composed of atoms. According to the law of conservation of matter, matter is neither created nor destroyed, so we must have the same number and type of atoms after the chemical change as were present before the chemical change.
Explanation:
The atoms that make up your body were produced inside a star and have ... I read once that atoms get recycled so much through the planet that each of ... from William Shakespeare, but I do know this: All of us come from stars. ... If you have gold fillings in your teeth, those atoms came from a star explosion.
Answer:
A
Explanation: That's what I got but I don't know if its correct sorry if it was wrong.
Answer:
Bullets
Explanation:
Ballistics is the analysis of projectiles and the only projectile in the list is a bullet.
Answer:
2 g
Explanation:
Since both sides have to be equal, add together the weight from the left side to get the total of 137
Subtract 135 from that
The answer is 2.
Answer:
Explanation:
Hello!
In this case, since we have 245 of iron (III) oxide, we first need to compute the moles contained there:
Now, as 1 mole of iron (III) oxide is related to 2 moles of iron, due to iron's subscript in the molecule, we get the moles of iron itself:
And the mass is computed based on the atomic mass of iron:
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