A student is a passenger in the front seat of a moving car. Which object is the BEST frame of reference for the student to deter
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Answer:
Moles of TNT = 2.38 moles
Explanation:
First , calculate the molar mass of the compound TNT
The formula is : C7H5N3O6
How to calculate molar mass?
Molar mass : It is the mass of substance in grams which is present in 1 mole of the compound.It is calculated by:
Molar mass = Number of atoms x the atomic mass of the element
Atomic mass of the elements are given below :
C = 12.0107
H = 1.0079
N = 14.0067
O = 15.9994
Molar mass of C7H5N3O6 =
= (7 x C) + (5 x H) + (3 x N) + (6 x O)
= 7(12.0107) +5(1.0079) + 3(14.0067) + 6(15.9994)
Molar mass = 227 .13 gram/mole
Mole are calculated using the formula:
Given mass = 539.88 grams
Molar mass = 227.13 g/mole
= 2.3769
Moles = 2.38 moles
Answer:
Explanation:
Firstly we need to know that , then we cam make the conversion:
This is the height of Mount Everest in feet
However, we can express it using scientific notation by counting to the left the decimal spaces:
Answer: Option (B) is the correct answer.
Explanation:
Expression for the given decomposition reaction is as follows.
Let us assume that x concentration of is present at the initial stage. Therefore, according to the ICE table,
Initial : x 0
Change : - 0.1
Equilibrium : (x - 0.1) 0.2
Now, expression for of this reaction is as follows.
Putting the given values into the above formula as follows.
x = 0.12
This means that = x = 0.12 atm.
Thus, we can conclude that the initial pressure in the container prior to decomposition is 0.12 atm.