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natulia [17]
3 years ago
15

When one material is rubbed against another, electrons jump readily from one to the other. why don’t protons do that?

Chemistry
1 answer:
Pachacha [2.7K]3 years ago
5 0
Protons are held inside nucleous with neutrons with large amount of force. So mere rubbing doesn't help in breaking the nucleous of an atom. But electrons are far from the nucleous and the force of attraction is smaller. So electrons can jump readily while protons can't
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Why doesnt iron burst into flames when it rusts
Katarina [22]
Rust does not have the properties to catch onto flames. However, if you light it on fire, then it would probably catch in flames but not instantly and will not continue to burn unless you have soaked it in oil or flammable object or substance. :) Hope this helps! 
3 0
3 years ago
Which of the following represents a pair of isotopes?
Nonamiya [84]
B.
Isotopes is an atom has same number of electrons and protons but different number of neutron.
3 0
3 years ago
Note the mass of copper(1) oxide formula unit 143.091 what is the mass of 8.250 moles of Cu2O
baherus [9]

Answer:

The mass of 8.250 moles of Cu2O is 1180.5g

Explanation:

HOW TO CALCULATE MASS OF A SUBSTANCE:

  • The mass of a substance can be calculated by multiplying the number of moles in the substance by its molar mass as follows:

Mass (g) = no. of moles (mol) × molar mass (g/mol)

  • Molar mass of copper (I) oxide (Cu2O) = 63.5(2) + 16 = 143.09 g/mol

Mass of Cu2O = 8.250 mol × 143.09 g/mol

Mass of Cu2O = 1180.5 g

Therefore, the mass of 8.250 moles of Cu2O is 1180.5 g.

6 0
3 years ago
What is the mass in grams of 0.375 mol if the element potassium, k?<br><br>​
alexandr402 [8]

Answer: 14.625g

Explanation:

No of moles= mass given/molar mass

No of moles given= 0.375mol

Mass is the unknown (?)

Molar mass of K= 39

No of moles = mass given/molar mass

Substitute the values

0.375= mass/39

Cross multiply

Mass = 39×0.375

Mass= 14.625g

The mass is 14.625g

3 0
3 years ago
Read 2 more answers
Is blowing up a balloon a chemical change
Anarel [89]

Answer:

Yes

Explanation:

The combination of an acid and base causes a chemical reaction. The product is a gas, bubbles that are carbon dioxide. The carbon dioxide gas is trapped in the balloon and it inflates. The carbon dioxide gas molecules created a pressure by colliding with the sides of the balloon.

4 0
3 years ago
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