A player uses a hockey stick to push a puck at a constant velocity across the ice. The weight of the puck is 1.70 N. The coeffic
2 answers:
Answer: The minimum force by which player should hit the puck to move it is 0.102 N.
Explanation:
Weight of the puck = 1.70 N
This weight of the puck is the force acting normal to the surface that is:
N = 1.70 N
The coefficient of friction =
Frictional force =
The minimum force by which player should hit the puck to move it is 0.102 N.
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Answer:
Explanation:
The air 9% mole% methane have an average molecular weight of:
9%×16,04g/mol + 91%×29g/mol = 27,8g/mol
And a flow of 700000g/h÷27,8g/mol = 25180 mol/h
In the reactor where methane solution and air are mixed:
In = Out
Air balance:
91% air×25180 mol/h + 100% air×X = 95%air×(X+25180)
Where X is the flow rate of air in mol/h = <em>20144 mol air/h</em>
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The air in the product gas is
95%×(20144 + 25180) mol/h = 43058 mol air× 21%O₂ = 9042 mol O₂ ×32g/mol = <em>289 kg O₂</em>
43058 mol air×29g/mol <em>1249 kg air</em>
Percent of oxygen is: =<em>0,231 kg O₂/ kg air</em>
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I hope it helps!
Answer:
The active ingredients in baking soda (NaHCO3) are
and
when Baking soda reacts with Acetic acid
Molecular equation
NaHCO3(aq) + CH3COOH(aq) → Na(CH3COO)(aq) + CO2(g) +H2O(l)
Ionic equation
→
as is present on both sides so it will cancel out and the net ionic equation will be
→