Answer:
Gravity explains this.
Explanation:
Weights and mass are different terms .
Weight is defined as the force exerting on the surface due to the mass and gravity of acceleration.
Here mass is related to the density of the body. So as the density would be same mass woulnt vary.
Whereas the Gravity changes due to the property of the planet.
Gravity is different for different planets and hence moon and earth have two different values.
So the mass i.e density remains same on both planets but the g value always changes hence weight is different.
Answer:
Rutherford predicted that an atom has a dense core called a <u>nucleus</u>.
Explanation:
Ernest Rutherford was a physicist who is known as the father of nuclear physics. He suggested an atomic model known as the Rutherford model. According to him, the atom consists of a tiny, dense, positively charged core called a nucleus and negatively charged particles called electrons that circulate around it The nucleus consists of positively charged particles called protons and neutral particles called neutrons.
<u>Answer:</u> The order of reactivity will be F > O > N > C > B.
<u>Explanation:</u>
Reactivity of an element is defined as the tendency for it to gain or loose electrons easily.
From the given elements, all are non-metals except boron.
Boron is a metalloid and it does not attract or loose electrons easily. Hence, it is the least reactive element.
Reactivity of non-metals increases across a period because of the decrease in size and electrons are more attracted towards the nucleus and hence, can gain electrons easily. Therefore, the most reactive metal will be fluorine.
Hence, the order of reactivity will be F > O > N > C > B.
Answer is: total number of atoms in C₁₂H₂₂N₂O₈S₂ are 46.
In molecule C₁₂H₂₂N₂O₈S₂ thera are twelve carbon atoms (C₁₂), twenty-two hydrogen atoms (H₂₂), two nitrogen atoms (N₂), eight oxygen atoms (O₈) and two sulfur atoms (S₂).
12 + 22 + 2 + 8 + 2 = 46.
<span>A lime is called a lime because it's lime in colour and a lemon is called lemon because it's lemon in colour. Just to change the subject slightly why is a fly called a fly? - because it flies - so if a fly didn't have wings would it be called a walk. We could go on and on with this couldn't we and have a lot of fun too :)</span>