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kiruha [24]
4 years ago
11

According to the experiments of Ernest Rutherford, where can a majority of a given atom's mass be found?

Chemistry
1 answer:
iren2701 [21]4 years ago
8 0
Majority of the mass of the atom must be concentrated in a very small space in the atom's interior, which he called the nucleus !
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Lizzie is pushing Alex on a scooter. Lizzie is pushing with 75 N of force to the left,
Jlenok [28]

Answer:

95 N

Explanation:

they are both pushing in the same direction so you simply add

75+20=95

7 0
3 years ago
The law of conservation of mass states that mass is neither created nor destroyed during a chemical reaction. This can be gleane
GenaCL600 [577]

Answer : The total mass of oxygen gas released in the reaction will be, 12.8 grams

Explanation :

Law of conservation of mass : It states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.

This also means that total mass on the reactant side must be equal to the total mass on the product side.

The balanced chemical reaction will be,

2MgO\rightarrow 2Mg+O_2

According to the law of conservation of mass,

Total mass of reactant side = Total mass of product side

Total mass of 2MgO = Total mass of 2Mg+O_2

or,

Total mass of 2MgO = Mass of 2Mg  + Mass of O_2

As we are given :

Total mass of MgO = 16.12 grams

The mass of Mg = 9.72 grams

So,

Total mass of 2MgO = Mass of 2Mg  + Mass of O_2

2\times 16.12g=2\times 9.72g+\text{Mass of }O_2

\text{Mass of }O_2=32.24g-19.44g=12.8g

Therefore, the total mass of oxygen gas released in the reaction will be, 12.8 grams

8 0
3 years ago
Instructions:Select the correct answer.
lys-0071 [83]

Answer:-

Ca-Cl

Explanation:-

The more the difference in electronegativity more the polar bond.

In case of Ca-Cl the difference = 3.16 - 1= 2.16

It is more than all the other combinations given.

Hence Ca-Cl is the most polar covalent bond.

3 0
4 years ago
13) Which of the following is NOT a true statement concerning what happens in all chemical
sashaice [31]
B. New atoms are formed as products.
3 0
3 years ago
El coeficiente de dilatacion lineal del alcohol = 3,7×10-⁵. Si a una temperatura de 70°c ocupa el volumen de 0,15 m³, ¿cuanto in
lesya692 [45]

Answer:

0.0004995\ \text{m}^3

Explanation:

\alpha = Coeficiente de expansión lineal = 3.7\times 10^{-5}

\Delta T= Cambio de temperatura = (100-70)^{\circ}\text{C}

V = Volumen ocupado por alcohol = 0.15\ \text{m}^3

El coeficiente de expansión de volumen está dado por

\beta=3\alpha=3\times 3.7\times 10^{-5}

El cambio de volumen viene dado por

\Delta V=V\beta\Delta T\\\Rightarrow \Delta V=0.15\times 3\times 3.7\times 10^{-5}\times (100-70)\\\Rightarrow \Delta V=0.0004995\ \text{m}^3

El volumen aumentará en 0.0004995\ \text{m}^3.

4 0
3 years ago
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