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oksano4ka [1.4K]
3 years ago
14

What experimental evidence was provided for the nuclear model of an atom

Chemistry
1 answer:
UkoKoshka [18]3 years ago
6 0
Alpha particles bouncing off of gold foil.
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algol13

Answer:B

Explanation:

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3 years ago
1. What is a metal replacement reaction?
MAXImum [283]

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a reaction in which one element is substituted for another element in a compound

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2 years ago
What is the mass of six of these marbles? What is the volume? What is the<br> density?
chubhunter [2.5K]

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All right. So let's calculate the density of a glass marble. Remember that the formula for density is mass over volume. So if I know that the masses 18.5 g. And I know that the um volume is 6.45 cubic centimeters. I can go ahead and answer this to three significant figures. So it's going to be 2.87 grams per cubic centimeter. Okay, that's our density. Now, density is an intensive process. Okay. We're an intensive property. I really should say. It doesn't depend on how much you have. Mhm. If I have one marble, its density is going to be 2.87 g per cubic centimeter. If I have two marbles, the density will be the same because I'll double the mass and I'll also double the volume. So when I divide them I'll get the same number. Okay, that's what makes it an intensive property. No matter how many marbles I have, they'll have the same density. Mass though is not an intensive property. So if I have six marbles and I want to know what the massive six marbles is. Well, I know the mass of each marble is 18.5 g. So the mass of six marbles Is going to be 100 11 g. Because mass is an extensive property. It depends on how much you have. If I change the number of marbles, I'm going to change the mass. That's an extensive property. All right. So we've calculated the density. We've calculated the mass and then what happens to the density of one marble compared to six marbles as we mentioned before. Since densities and intensive property, the densities will be the same, no matter how may.

Explanation:

5 0
3 years ago
Calculate the weight of keame if he has potential energy of 67J and standing at a hieght of 10m.(take g100m/s)​
DanielleElmas [232]

Answer:

height(h)=10 m

acceleration due to gravity (g)=10 m/s^2

mass (m)=?

potential energy=67

or,mgh= 67

or,m×10×10=67

or,m=67/100

or,m=0.67 kg

Therefore,m= 670 grams

7 0
3 years ago
Is soil a pure or impure substance?​
irinina [24]
Impure substance, because pure would be dirt from the earth
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3 years ago
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