Answer:12 seconds
Explanation:the formula is s=d/t.
s= speed, d=distance, and t= time
Solve for t
Your new arranged formula is t=d/s
T=108/9
T= 12
Dii ok not forget your units
Yes, because people tend to move toward better weather and climate. People follow food, and people follow jobs.
The molar mass of a, b and c at STP is calculated as below
At STP T is always= 273 Kelvin and ,P= 1.0 atm
by use of ideal gas equation that is PV =nRT
n(number of moles) = mass/molar mass therefore replace n in the ideal gas equation
that is Pv = (mass/molar mass)RT
multiply both side by molar mass and then divide by Pv to make molar mass the subject of the formula
that is molar mass = (mass x RT)/ PV
density is always = mass/volume
therefore by replacing mass/volume in the equation by density the equation
molar mass=( density xRT)/P where R = 0.082 L.atm/mol.K
the molar mass for a
= (1.25 g/l x0.082 L.atm/mol.k x273k)/1.0atm = 28g/mol
the molar mass of b
=(2.86g/l x0.082L.atm/mol.k x273 k) /1.0 atm = 64 g/mol
the molar mass of c
=0.714g/l x0.082 L.atm/mol.K x273 K) 1.0atm= 16 g/mol
therefore the
gas a is nitrogen N2 since 14 x2= 28 g/mol
gas b =SO2 since 32 +(16x2)= 64g/mol
gas c = methaneCH4 since 12+(1x4) = 16 g/mol
Answer:
12.5 moles
Explanation:
Given parameters:
Number of moles of FeS = 12.5moles
Unknown:
Number of moles of sulfur needed = ?
Solution:
We have to solve from the known to the unknown using a balanced chemical equation at first.
The balanced chemical equation for this reaction is:
Fe + S → FeS
The reaction is made possible when iron is heated in the presence of sulfur.
we see that;
1 mole of sulfur produced 1 mole of FeS
x mole of sulfur will produce 12.5moles of iron sulfide;
Therefore, 12.5 moles of sulfur will produce that given amount of iron sulfide.
Answer:
independant=variable that has changed
dependant=variable affected by the change
water=independant, because if you put too much water the dependant that depends on water could die or too little dependant can die (dependant=plants)
Explanation: