Baking soda and vinegar react because of an acid-base reaction. The product of this creates carbon dioxide.
0.9mole of Fe
Explanation:
Given parameters:
Mass of Fe = 50g
Unknown:
Number of moles of iron = ?
Solution:
The number of moles is the particle that contains the avogadro's number of particles.
It is a unit for reporting chemical measurement.
To find the number of moles of a substance;
Number of moles = 
Molar mass of Fe= 56g/mol
Number of moles = 
= 0.9mole of Fe
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Answer:
28 grams CaH₂(s) is required for production of 15L H₂(g) at 25°C and 825Torr.
Explanation:
CaH₂(s) + H₂O(l) => Ca(OH)₂(s) + H₂(g)
Using ideal gas law, PV = nRT
=> moles H₂(g) = PV/RT = [(825/760)Atm](15L)/(0.08206L·Atm·mol⁻¹·K⁻¹)(298K) = 0.6659 mol H₂(g)
From stoichiometry of given equation,
=> 0.6659 mol H₂(g) requires 0.6659 mole CaH₂(s)
Converting moles to grams, multiply by formula weight,
=> 0.6659 mole CaH₂(s) = 0.6659 mole CaH₂(s) x 42g/mole = 27.966 grams CaH₂(s) ≅ 28 grams CaH₂(s) (2 sig. figs.)
Answer: A
Explanation: The sidearms consist of axonemal dynein. The dynein arms, for example, are motor complexes that produce the force needed for bending. Each dynein arm is anchored to a doublet microtubule by walking along an adjacent microtubule, the dynein motors can cause the microtubules to slide against each other. When this is carried out in a synchronized fashion, with the microtubules on one side of the axoneme being pulled 'down' and those on the other side pulled 'up,' the axoneme as a whole can bend back and forth. The human sperm is a well known example
The theoretical yield of Aluminum oxide is 193.8 grams
<em><u>calculation</u></em>
Theoretical yield is calculate as below
the balanced equation for reaction is as below
4 Al +3 O2 → 2Al2O3
The mole ratio of Al: Al2O3 is 4 :2 therefore moles of Al2O3
= 3.40 x2/4 =1.7 moles
The mole ratio of O2 : Al2O3 is 3:2 therefore moles of Al2O3 is
= 2.85 x 2/3 =1.9 moles
N.b O2 is in excess therefore it's mole is used to determine moles of Al2O3 which is used to calculate theoretical yield.
theoretical yield is therefore = 1.9 moles x 102 g/mol= 193.8 grams
