Answer: 1) electrical energy to chemical energy
Explanation: The reaction must be forced by applying an external electric current thus needing a supply of electric current.
Answer: the second one
Explanation: i got it right on edg2020
Answer:
The type of evidence that is more difficult to collect is evidence known as trace, for example, fibers, hair, or signs of dirt.
Explanation:
For the collection of this type of evidence, specialized equipment such as special vacuum cleaners, tweezers, etc. are used, all with the purpose of carrying out the collection of trace evidence. This type of evidence is characterized by being very difficult to find.
I think it is trace evidence since it is really small and hard to find.
The subscript 2 on the Bromine, Br atom simply means Magnesium ion is; Mg²+.
Discussion:
When magnesium ion, Mg²+ combines with an halogen like Bromine, Br-.
In such scenario, there must be a balance of charges for the formation of a compound like MgBr2.
As such, 2 Br- ions and 1 Mg²+ are necessary to maintain charge balance in the compound.
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The '2' in Magnesium bromide (MgBr2) represents the 2 bromide ions that associate with each magnesium ion in the ionic compound, ensuring overall neutrality.
In the ionic compound Magnesium bromide (MgBr2), the '2' signifies the number of bromine (Br) atoms that are combined with a single atom of Magnesium (Mg) to form this compound. This is due to the fact that magnesium (Mg) has two valence electrons which it donates to form a stable compound, resulting in a Mg2+ cation. The bromine atom accepts one electron to form a Br- anion. Since Mg needs to donate two electrons, two Br ions are required, which gives us the '2' in MgBr2. This ratio of ions ensures neutrality of the overall ionic compound.
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They help your body produce vitamin D.
They are visible to the naked eye.
They provide the energy that makes your morning toast.
They carry information to televisions and radios.
B. As particles travel in straight lines, their paths sometimes meet, and then they bounce apart with no gain or loss of energy.
C. When particles pass close enough to one another, their attractions pull them together, and then they bounce apart with a loss of energy.
D. As particles travel in straight lines, their paths sometimes meet, and then they bounce apart with a loss of energy.
Answer: option B. As particles travel in straight lines, their paths sometimes meet, and then they bounce apart with no gain or loss of energy.
Explanation:
The kinetic-molecular theory explains the the properties and behavior of the gases in terms of the energy, size, and motion of the particles that form the gases.
According to this model, the gas particles are in constant random motion. The particles travel in straight line until they collide either with other particles or with the walls of the vessel. Such collisions are elastic, meaning that energy is not either gain or loss. Therefore, this theory does not consider either attractions or repulsions between the particles. The particles bounce apart and the total kinetic energy is conserved.
Answer:
B its B
Explanation: