Answer:
The rapid movement of excess charge from one place to another is an <em>electric discharge.</em>
Explanation:
A material in which electrons <em>CANNOT</em> move easily from place to place is an insulator. A material in which electrons <em>CAN </em>move easily from place to place is a conductor.
Answer: the density of the rock
55.91g/ml
Explanation:
The density of the rock after it had being placed in the cylinder of water so the calculation should look like this:
Volume of water substract the mass of the rock:
And that is 142.5 ml - 86.59g =
Answer 55.91 g/ml
So the density of the rock is 55.91g/ml
Answer:
The chemical equation can be written as:
2Mg+O
2
→2MgO
48 g of Mg reacts with 32 g of O
2
.
Thus, 4.8 g of Mg reacts with 3.2 g of O
2
.
Now, 32 g of O
2
forms = 80 g of MgO.
3.2 g of O
2
produces =
32
80
×3.2 = 8 g of MgO.
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Atomic mass of N from periodic table is 14 amu so atomic mass of N₂ will be 2 * 14 = 28 amu
This means that every mole of N₂ has mass equal to 28 g
<u>Answer:</u> The correct answer is Option B.
<u>Explanation:</u>
There are 3 subatomic orbitals which are present in an atom:
1. Protons: These sub-atomic particles are positively charged and are found in the nucleus.
2. Electrons: These sub-atomic particles are negatively charged and are found in the orbitals around the nucleus.
3. Neutrons: These sub-atomic particles carry no charge and are known as electrically neutral species. These particles are found in the nucleus.
From the above information, the answer to this question is Option B.
