Answer:
a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction
Answer:
Story in chemical reaction is about the general issue of bond formation and bond breaking where by the energy required to break bond of reactant to form product is called activation energy
Scientist study the whole process and bring law of law conservation of mass,law of definite proportion (Louis proust 1799),law of multiple proportion (Dalton 1803) law of reciprocal proportion(Ritcher1792)
Story about electric current
It's about rate of flow of electric charge in given point
Inshort discovered by the work of Faraday and Alessandro Volta1803italian physics
Answer:
The correct answer is: Alkali Metals
Explanation:
The chemical elements that belong to the group 1 of the periodic table are known as the alkali metals. The alkali metals belong to the s-block and are highly reactive in nature.
The alkali metals are lithium (chemical symbol Li), sodium (chemical symbol Na), potassium (chemical symbol K), rubidium (chemical symbol Rb), caesium (chemical symbol Cs), and francium (chemical symbol Fr).
Therefore, lithium, sodium, potassium are examples of alkali metals.
Answer:
true
Explanation:
This is because it helps distribute the particles that are being dissolved.
B)chemical property
C)physical change
D)physical property
Physical property .
Answer:
i would say Chemical property
Explanation:
As the balloon rests on the table, it begins to grow
in size. Which statement(s) best explains why the
balloon grows?
The air from the outside comes inside the
balloon. More air means more volume.
The air warms and increases particle
movement. Increased particle movement
leads to increased volume.
side
o
Increased temperature means increased
volume as long as the container is flexible.
Answer: option 2 and 3
Explanation:
I just did it
Answer:
The last two
Explanation:
edge2021
Answer:
0.192 mol.
Explanation:
n = mass / molar mass.
mass of AsH₃ = 15.0 g.
molar mass of AsH₃ = 77.95 g/mol.
∴ The number of moles in 15.0 g AsH₃ = mass / molar mass = (15.0 g) / (77.95 g/mol) = 0.192 mol.