Answer:
Synthesis reaction
Explanation:
Two or more elements or compounds combining to make one complex substance occurs in a synthesis reaction.
A synthesis or combination reaction is one that involves the formation of a single product from two or more reactants.
A + B + C → D
Answer:
less reactive less potential
Explanation:
It isn’t because they eat p o o
Answer:
100.71 cm H2O
Explanation:
In a fluid column barometer, the height of the fluid column is proportional to the pressure. The pressure is by definition:
, where F is a force and A is the area.
In a column barometer the force is given by the weight of the fluid:
, and the mass may be expressed as
, where
is the density and V is the volume.
Replacing this in the pressure definition:

In a constant cross section area column, the volume may be calculated as:
where A is the area and h the height. Replacing this in the previous equation:

Different columns may be over the same pressure, so:

Dividing each part for gravity constant:

And isolating hw:
mm
It is equal to 1007,1 cm.
Answer:
Astatine is a halogen with several isotopes that all have short half-lives.
Which of the following combinations of mass number and neutrons are possible as isotopes of astatine? Choose one or more:
i) A = 211, n = 127
ii) A = 210, n = 125
iii) A = 220, n = 134
iv) A = 207, n = 122
v) A = 209, n = 124
Explanation:
The mass number is the sum of the number of protons and the number of neutrons in an atom.
Atomic number of At(astatine ) =85
That means it has --- 85protons.
Its mass number A=210
Hence, the number of neutrons in At are:

Second option:
ii) A=210 , n=125 is the answer.