Answer:
b
Explanation:
Atom is the smallest particle of an element
Answer:
element
Explanation:
Elements are pure substances with only one kind of atom
<h3>
Answer:</h3>
4551.37 Pascals
<h3>
Explanation:</h3>
The pressure refers to the force exerted by a substance per unit area.
The pressure is liquid is calculated by;
P = height × density × gravitational acceleration
In this case;
Height = 636.2 mm
Density = 0.7300 g/cm³
g = 9.8 N/kg
We need to convert mm to m and g/cm³ to kg/m³
Therefore;
Height = 636.2 mm ÷1000
= 0.6362 m
Density = 0.73 g/cm³ × 1000 kg/m³
= 730 kg/m³
Then, we can calculate the pressure;
Pressure = 0.6362 m × 730 kg/m³ × 9.8 N/kg
= 4551.3748 pascals
= 4551.37 Pascals
Therefore, the pressure of the column of decane is 4551.37 Pascals
Answer : The number of moles of carbonate ion, 
produced are, 0.207 moles.
Explanation : Given,
Moles of sodium carbonate = 0.207 mol
As we know that when sodium carbonate dissolved in water then it dissociates to give 2 sodium ion and 1 carbonate ion.
The balanced chemical reaction will be:
From the balanced chemical reaction we conclude that,
As, 1 mole of sodium carbonate dissociate to give 1 moles of carbonate ion,
So, 0.207 mole of sodium carbonate dissociate to give 0.207 moles of carbonate ion,
Thus, the number of moles of carbonate ion, produced are, 0.207 moles.
