Energy production
Thus most industries in working burn oxygen as fuel. Examples are steel production and production of chemicals
The most condensed state of matter is solid
Answer:
a) 7
b) 4
c) 1
d) 4
Explanation:
Significant figures:
All non-zero digits are consider significant figures like 1, 2, 3, 4, 5, 6, 7, 8, 9.
Leading zeros are not consider as a significant figures. e.g. 0.03 in this number only one significant figure present which is 3.
Zero between the non zero digits are consider significant like 104 consist of three significant figures.
The zeros at the right side e.g 2400 are also significant. There are four significant figures are present.
A) 34.50698 g
In this measurement there are 7 significant figures.
B) 30.00 mL
There are 4 significant figures.
c) 0.0008 g
There is only one significant figure which is 8.
d) 125.0 °C
There are 4 significant figures.
From the given balanced reaction equation:
we can see that every 1 mole of NH4NO2 will produce 1 mole of N2 and when the water also on the gas phase so, every 1 mole of NH4NO2 will produce 3 moles of gas
now we need to get number of moles of NH4NO2 = mass/molar mass
when the mass = 32 g and the molar mass of NH4NO2 = 64 mol/g
∴moles of NH4NO2 = 32 g / 64 mol/g = 0.5 mole
so, the moles that produced of gas will be = 3 * 0.5 = 1.5 moles
now, we can use the ideal gas formula to get V:
PV = nRT
when P is the pressure = 1.5 atm
n is the number of moles = 1.5 moles
R is the ideal gas constant = 0.0821 L*atm/mol*K
and T is the temperature in Kelvin = 525 °C + 273 = 798 K
so by substitution:
1.5 atm * V = 1.5 moles * 0.0821 * 798 K
∴ V = 65.5 L