Answer:
3.58 × 10³ seconds or 59.65 minutes
Explanation:
We are given;
- Power of a steam engine as 19 kW
- Work done as 6.8 × 10^7 Joules
We are required to calculate time;
We need to know that;
- Power = Work done ÷ time
- Power is the rate of doing work.
19 kW = 19,000 Watt
Rearranging the formula;
time = Work done ÷ power
= 6.8 × 10^7 Joules ÷ 19,000 watt
= 3578.95 seconds
= 3.58 × 10³ seconds
But, 60 seconds = 1 minute
Therefore, t = 59.65 minutes
Answer:
2 C6H14 (g) + 19 O2 (g) --> 12 CO2 (g) + 14 H2O (g)
Explanation:
For solving the stoichiometric calculations, we first need to do two steps. One of them is balancing the reaction equation. Here the balancing is done and we can see that 2 moles of hexane reacts with 19 moles of oxygen to produce 12 moles of carbon dioxide and 14 moles of water.
Now, for 2 moles of hexane, number of moles of oxygen required is 19.
So, for 7.2 moles of hexane, number of moles of oxygen required is.
= 68.4.
So 68.4 moles of oxygen is required.
Answer:
Newtonian fluids have a constant viscosity that does not change and non newtonain fluids have a viscosity that varies.
Explanation
Newtonian fluids have a constant viscosity and a zero shear rate at zero shear stress. Non-Newtonian fluids have a variable viscosity and a varible relationship with shear stress.
Answer:
hydrochloric acid
Explanation:
The quickest method of removing heavy metals is with hydrochloric acid.
Answer:
Molarity of HCl solution = 0.25 M
Explanation:
Given data:
Volume of NaOH= V₁ = 25.0 mL (25/1000 = 0.025 L)
Molarity of NaOH solution=M₁ = 0.185 M
Volume of HCl solution = V₂ = 0.0200 L
Molarity of HCl solution = M₂= ?
Solution:
M₁V₁ = M₂V₂
0.185 M ×0.025 L = M₂ × 0.0200 L
M₂ = 0.185 M ×0.025 L / 0.0200 L
M₂ = 0.005M.L /0.0200 L
M₂ = 0.25 M
