<span>First set up the equation 39.33g/100g = x/1.28g and that'll give you how much sodium is in each 100g of the mix.
39.33g *1.28g= 100g * x
x = 0.503424g
x = Amount of sodium per 100g of the mix
Now 2.4g / 0.503424 = 4.7674
Multiply by 100 and you get 476.7353g</span>
Answer:
189.6 mL
Explanation:
As per Boyles law when a gas is kept at a constant temperature and mass in a closed container, the volume and pressure vary inversely.
P1V1= P2V2
Here, P1 = 0.79 atm, V1 = 240 ml, P2= 1 atm
therefore, substituting values in above equation we get
0.79×240 = 1×V2
⇒V2 = 189.6 ml
therefore, its volume at STP (1 atm and 0 oC) = 189.6 ml
Answer:- 4.35 kg of ammonium perchlorate are required for every kg of Al.
Solution:- It's a stoichiometry problem. The balanced equation for this problem is....
From balanced equation, there is 3:3 that is 1:1 mol ratio between aluminum and ammonium perchlorate.
Given mass of Al is 1 kg and we are asked to calculate the mass of ammonium perchlorate for it.
Molar mass of Al is 26.98 g/mol and molar mass of ammonium perchlorate is 117.49 g/mol.
1 kg = 1000 g
Grams of Al are converted to moles and then moles of ammonium perchlorate are calculated using mol ratio and finally on multiplying with molar mass we get the mass of ammonium perchlorate.
1000 g Al x (1mol Al/26.98 g Al) (1mol ammonium perchlorate/1mol Al) (117.49 g ammonium perchlorate/1mol ammonium perchlorate)
= 4354.7 g that is 4.35 kg of ammonium perchlorate
Answer:
But it is not used as domestic fuel, due to several reasons : Hydrogen is not easily available and cost of production is high Unlike other gases, hydrogen is not readily available in the atmosphere. It requires processes like electrolysis of water for its production. This is a very costly process and time consuming.
Explanation: