The units are nm (nano-meter), km (kilo-meter), pm (pico-meter), dm (decimeter), mm (millimeter), m (meter), cm (centimeter), hm (hectometer) and gm (gigameter). Now we can express each of these units in terms of m.
1 nm = , 1 Km =
1 pm =
, 1 dm = 0.1 m, 1 mm = 0.001 m, 1 cm = 0.01 m, 1 hm = 100 m, 1 gm =
. Thus the decreasing unit will be
gm>km>hm>m>dm>cm>mm>nm>pm
Answer:
The mass is
Explanation:
From the question we are told that
The volume of oxygen produced is
The temperature is
The pressure is
From the ideal gas law we have that
Where R is the gas constant with the value
n is the number of moles making it the subject of the formula
Substituting values
From the chemical equation
one mole of produces one mole of kCl and
of oxygen
x mole of produces x mole of kCl and
of oxygen
So
Now the molar mass of KCl is a constant with a value
Now the mass of KCl is mathematically evaluated as
Substituting values