False, frogs cannot see in all directions.
Answer:
There are 2 moles of oxygen molecules; there are 4 moles of oxygen atoms.
Explanation:
Sn + CuSO4 → Cu + SnSO4 I think this should be the answer. Hope it helps.
Answer:
The required flow rate of air in mol/h is 20144 and the percent by mass of oxygen in the product gas is 23,1%.
Explanation:
The air of 9 mole% methane have an average molecular weight of:
And a flow of 700'000g/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)
<em>Where X is the flow rate of air in mol/h.</em>
<em>Solving, </em><em>X = 20144 mol air/h</em>
The air in the product gas is:
95%×(20144 + 25180) mol/h = 43058 mol air× 21%O₂ = 9042 mol O₂ ×32g/mol = 289 kg O₂
43058 mol air×29g/mol 1249 kg air
Percent mass of oxygen in the product gas is: =0,231 kg O₂/ kg air* 100 = 23,1%
I hope it helps!
The correlation coefficient is a number between zero and 1 and the answer is <u>false</u>
And that is because the correlation coefficient is a number between -1 and one. A positive correlation coefficient means that two variables are positively correlated or move in the same direction. Plus one means perfect like full correlation, zero means there is no correlation whatsoever.
And a negative correlation means that as one variable moves in a positive direction, the other moves in a negative direction, so that is negative correlation, And the correlation of -1 means perfect negative correlation.
<h3>What Is the Correlation Coefficient?</h3>
The correlation coefficient is a statistical measure of the strength of the relationship between the relative movements of two variables. The values range between -1.0 and 1.0. A calculated number greater than 1.0 or less than -1.0 means that there was an error in the correlation measurement.
A correlation of -1.0 shows a perfect negative correlation, while a correlation of 1.0 shows a perfect positive correlation. A correlation of 0.0 shows no linear relationship between the movement of the two variables.
Learn more about correlation coefficient
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