For the net charge to be +3,the mystery charge should be is -2 and net force is towards left.
- In first problem, overall charge should be -2 (as mentioned in question).
- So charge labelled with ? should be negative charge ( -ve).
- There will be net force on -1 charge towards +3 charge (left). For box (b)net force towards right
- For box c) net force towards right.
- It is often referred to as electric charge, electrical charge, or electrostatic charge, and denoted by the letter q, is a property of a unit of matter that indicates how many more or less electrons than protons it has.
- When retained in an electric or magnetic field, matter's basic physical feature known as electric charge causes it to experience a force.
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The density in lbs/in³ units : 0.697
<h3>Further explanation</h3>
Given
Density of gold is 19.3 g/cm³
Required
Conversion to lbs/in³
Solution
Density is a quantity derived from the mass and volume
Density is the ratio of mass per unit volume
Density formula:
Conversion factor
1 g = 0,00220462 lbs
1 cm³ = 0,0610237 in³
So the density :
Answer:
A. manganese change from +7 to +2
Explanation:
Reduction means a gain of electrons, which means the oxidation number will go down or the charge goes down basically or become more negative charge. On the left, Mn has +7 in MnO4-. On the right, it has 2+, so it has been reduced.
Answer:
Explanation:
We must convert formula units of Zn(ClO₃)₂ to moles and then to grams of Zn(ClO₃)₂.
Step 1. Convert formula units to moles
Step 2. Convert moles to grams
Answer:
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Explanation:
Elements Atomic Mass (u)
Hydrogen 1
Carbon 12
Nitrogen 14
Oxygen 16
Sodium 23
Magnesium 24
Sulfur 32
Chlorine 35.5
Calcium 40
actor Atoms Molecules
Definition Most fundamental and smallest part that can exist of an element. Two or more atoms chemically bonded together.
Example Oxygen – O
Phosphorus – P
Sulphur – S
Hydrogen – H Oxygen – O2
Phosphorus – P4
Sulphur – S8
Water – H2O
Structure The smallest particle with properties of an element. Combination of two or more atoms.
Stability An atom may not always be stable in nature due to the presence of electrons in the outer shells. Molecules are formed to attain stability.
Constituent Elements Protons, Electrons & Neutrons Two or more atoms of the same or different elements
Reactivity Except for the noble elements, atoms of all elements showcase a certain level of reactivity. Compared to a molecule, the level of reactivity is less than some valence points are filled by electrons of combined elements.