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- Question #5d6cd - Socratic
Notice that the reaction ended up producing 145 g of xenon tetrafluoride This represents the reaction's actual yield, i e what you actually get by doing the reaction in the lab
- How do you add (-8-9i)+(3-6i) in trigonometric form? | Socratic
For a complex number a +bi we can repesent this in trigonometric form, as z = r(cosθ +isinθ) r = √a2 + b2 θ = arctan(b a) So, for z1 = − 8 − 9i, we can find that r1 = √(− 8)2 +(−9)2 = √145 θ1 = arctan(−9 −8) However, −8 − 9i is in quadrant 3, but θ is in quadrant 1, so we need to add π θ1 = arctan(−9 −8) +π ≈ 3 9857 z1 ≈ √145(cos(3 9857) + isin(3 9857
- What is the equation of the line with slope - Socratic
The equation of a line in slope-intercept form is y = mx + b We are given x, y, and m So, plug these values in: 11 = 12 11 ⋅ − 2 + b 11 = − 24 11 + b 11 + 24 11 = b 121 11 + 24 11 = b 145 11 = b This is how I would leave it but feel free to turn it into a mixed fraction or decimal So, our equation is y = (12 11)x + 145 11
- Point A is at (-7 ,3 ) and point B is at (5 ,4 ). Point A is . . . - Socratic
A' = (7, -3) The distance has decreased by sqrt(145) - sqrt(53) ~~ 4 76 Given: A(-7, 3), B(5, 4) Point A is rotated pi clockwise about the origin A pi rotation
- Question #a549c - Socratic
Number of protons=92 Number of neutrons=146 "_92^238"U" is chemical symbol of one of the isotopes of element uranium Some times it is also written as "U"-238 By convention the figure 92 is the atomic number of the element represented Atomic number is number equal to the number of protons in its nucleus And the other number 238 represents the Atomic mass of the element in amu (atomic mass
- Question #a6cce - Socratic
The wavelength is lambda=1 03xx10^(-7) m Detailed solution below There is a variety of ways to calculate this, but I will use the method that I think best suits a chemistry approach to the question The energy of each stationary state of hydrogen is given by E_n=-1311 n^2 where I use a value for the numerator that has units of kJ per mole (This is the equivalent of 13 6 eV if you are
- Question #48bcb + Example - Socratic
From this, the number of unpaired electrons seems to be: Number of unpaired electrons = S |ms| = 2 145 1 2 = 4 29 ≈ 4 So it looks like treating μS+L ≈ μS for Fe2+ is OK to determine the number of unpaired electrons For Fe3+ it should be that μS+L = μS perfectly, since the 3d is half-filled there
- Question #88b4c - Socratic
The chemical equation and the molar masses are M r:mmml286 14mmmmmmmmmmmmm18 02 mmmNa2CO3 ⋅ 10H2O → Na2CO3 ⋅ H2O+ 9H2O Step 1 Calculate the moles of Na2CO3 ⋅ 10H2O Moles of Na2CO3 ⋅ 10H2O = 100 0g Na2CO3 ⋅ 10H2O × 1 mol Na2CO3 ⋅ 10H2O 286 14g Na2CO3 ⋅ 10H2O = 0 3495 mol Na2CO3 ⋅ 10H2O Step 2 Calculate the moles of water released Moles of H2O = 0 3495 mol Na2CO3 ⋅ 10H2O
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