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Use the References to access important values if needed for this question. Two-Step Algebra a =b+ cd lne In order to solve the equation above for d, you must: Step One Add the same expression to each side of the equation to leave the term that includes the variable by itself on the right-hand side of the expression: -b ta =-bv +b+ cd Ine Step Two Multiply both sides of the equation by the same expression: x(a - b) = xcd Ine The resulting equation is: d = Submit

The mass of magnesium used in this experiment is critical to determining the moles of hydrogen gas generated. The analytical balances used in Chemistry 1A labs are very sensitive to point that touching materials with your fingers before measuring them can affect the measurements. The balances are sensitive enough to detect dirt and oils from your fingers transferred to the magnesium. Would your experimental value of R increase or decrease if the mass of magnesium measured was artificially high due the touching it with your hands? Increase Decrease

A 0.4994 g sample of a hydrate of CuS04 xH20, is heated to a constant weight of 0.3184g(total loss of water). Calculate the value of x.

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Consider these compounds: A. PbF, В. Cu(ОН)2 С. Cr(ОН)з D. Al(OH)3 Complete the following statements by entering the letter(s) corresponding to the correct compound(s). (If more than one compound fits the description, include all the relevant compounds by writing your answer as a string of characters without punctuation, e.g. ABC.) Without doing any calculations it is possible to determine that magnesium fluoride is more soluble than BCD and magnesium fluoride is less soluble than A It is not possible to determine whether magnesium fluoride is more or less soluble than |by simply comparing Kp values.

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What is the energy in Joules of one mole of photons of visible light having a wavelength of 6.31 x 10² nm? Do not report units in your answer. Do not use scientific notation, Use 1 decimal place in your answer.

I3D 23 yands 378 g f) 3.8 x 10 mol x 0.0670 mol h) (2.3 x 10 m) (4.567 x 10° m)= 2.3x100m 4.

5.6 x 1012 is ... * Small than 1 O Larger than 1 60,900,000 is equal to * 6.9 x 10° 6.09 x 106 O 6.09 x 107 O 6.9 x 107

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Gold has 79 electrons per atom and an atomic mass of 197 u. Part A What is the total charge of all the electrons in 3.1-kg bar of gold? Express your answer to two significant figures and include the appropriate units. µA a xa х.10п b Qtotal = Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Check your signs. Part B What is the net charge of the bar? Express your answer with the appropriate units. Qnet = Value Units Submit Request Answer

ntActivity.do?locator=assignment-take A model for the compound cyclohexane is shown. ball & stick v + labels Submit Answer [Review Topics] [References] Use the References to access important values if needed for this question. + Login to your account x Write a balanced chemical equation that shows the formation of cyclohexane from the elements carbon (C) and hydrogen (H₂). (Use the smallest integer coefficients possible and do not include states.) Retry Entire Group 2 more group attempts remaining QN = blue0= red - Bin A Previous Next

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Q1. The net potential energy between two adjacent ions, EN, is represented by A В E N pn where EN is the net energy in Joule (J), A and B are constants with values of 1.436 J.nm and 7.32 × 106 J.nm, r is the interatomic distance between the two ions in nanometer (nm), and n is a positive number with a value of 8.

please answer this properly and use the units that are asked in the answer please don't use anything else ASAp 5d please   please read everything than answer it

Am I right? Calculate the mass percentage of water in the hydrate. Show the calculations. Sample 1 : 60.87% Mass of hydrate : 0.46g Mas of water : 0.28g Mass percentage of water in the hydrate = 0.28g/0.46g x 100 = 60.87%   Sample 1 2 3 Calculations for sample 1 Mass of aluminum dish   1.24g 1.26g 1.24g - Mass of aluminum dish + Epsom salt   1.70g 1.94g 1.80g -   Epsom salt, original (hydrated) mass 0.46g 0.68g 0.56g 1.70g – 1.24g = 0.46g Mass of aluminum dish + Epsom salt after heating 1.42g 1.62g 1.61g   Epsom salt, heated (dehydrated) mass 0.18g 0.36g 0.37g 1.42g- 1.24g = 0.18g Mass of water 0.28g 0.32g 0.19g 0.46g – 0.18g = 0.28g Moles of magnesium sulfate 0.0015mol 0.0030mol 0.0031mol 0.18g x (1mol/120.37g)= 0.0015mol Moles of water 0.016mol 0.018mol 0.011mol 0.28g x (1mol/18.02g) = 0.016mol Ratio of moles water: moles of magnesium sulfate 32:3 18:3 11:3.1…

Q1. The net potential energy between two adjacent ions, EN, is represented by A В EN pn where En is the net energy in Joule (J), A and B are constants with values of 1.436 J.m and 7.32 × 106 J.nm°, r is the interatomic distance between the two ions in nanometer (nm), and n is a positive number with a value of 8. Using these information, determine the equilibrium spacing between the two ions in nanometer (nm).

An average human weighs about 650 N For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Force between two point charges. ▼ Part A If two such generic humans each carried 1.5 C coulomb of excess charge, one positive and one negative, how far apart would they have to be for the electric attraction between them to equal their 650 N weight? Express your answer in kilometers. ΠΡΑΣΦ T= Submit Request Answer Constants km