B. They are the same force. Each body acts on the other. The moon and the earth, and the apple and the earth.
In Ni(CO)₄ the stoichiometry of Ni to C is 1:4
for every 4 atoms of C is attached to one Ni atom.
this means that if there are 4 atoms of C - 1 atom of Ni
in 5.23 x 10²⁴ atoms of C -1/4 x 5.23 x 10²⁴ atoms of Ni
= 1.3075 x 10²⁴ atoms of Ni
the number of atoms rounded off to the second decimal place = 1.31 x 10²⁴ atoms
correct answer is E
<u>Answer</u>:
mass of magnesium oxide is 4.2 grams.
<u>Explanation</u>:
Balanced equation: 2Mg + O2 → 2MgO.
Given that 2.5 g Mg reacts with 3.0 g O2
- mass = moles * Mr
- moles = mass/Mr
- Mr = mass/moles
First find the moles of Mg:
moles = mass/Mr
moles = 2.5/ 24
moles = 0.104 moles
Using molar ratio, magnesium oxide will have same moles as Mg as they both have "2" molar ratio. So moles of Mg is 0.104 moles.
mass = moles * Mr
mass = 0.104 * 40
mass - 4.1667 g
mass = 4.2 g ___________this is the mass of MgO
Pressure belts affects the climate of an area in such a way that Low pressure belt produces rain and storms and weather conditions that are unstable.
<u>Explanation:</u>
It is the movement of air that creates difference in the pressure and this is called as Pressure gradients. The patterns of pressure that exists over a period of time in an area is called as pressure belt. The pressure belt or wind belt highly depends on the temperature of an area.
Pressure belts can affect the climatic conditions of an area greatly. Air when rises it can create lower pressure and air when shrinks it can result in higher pressure. When the pressure is low then it can create a weather condition in an area which is unstable. It can create rain or storm.
.
Answer:
the sustainability of economic growth
Explanation:
