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If your sample contained a volatitle impurity, what value would be in error, the weight of the anhydrous salt or the weight of
1. 1 answer
2. 689 views
Write formulas for the following compounds containing complex anions.rubidium hyponitrite magnesium bromite
1. 1 answer
2. 598 views
What is the name of the following compounds;Hg2(BrO2)2 Au(OCN)3 AuSCN Ni3(AsO4)2 Thank you
1. 1 answer
2. 1,565 views
How do I solve this radical equation?3 + (2x√3) = 5
1. 2 answers
2. 395 views
What would the expression x^-6/11 be simplified?
1. 2 answers
2. 384 views
In a 30-60-90 triangle, if they give me b=15, what would be a & c?
1. 1 answer
2. 326 views
I have a 45-45 special right triangle who's hypotenuse is 12, how do I find the other two side lengths?
1. 2 answers
2. 2,091 views
What's the answer to [(x-2)(x+2)/x(8x+3)]*[2(8x+3)/(x-2)]is it 2x+4/x or 6?
1. 1 answer
2. 269 views
what's the LCM of: 2r-1 , r+4
1. 1 answer
2. 541 views
Is this correct?(3m^2/2n )* (n^2/12) = m^2*n/8
1. 1 answer
2. 273 views
Is this correct?(3m^2/2n )* (n^2/12) = m^2*n/8
1. 1 answer
2. 291 views
calculate the molarity of each of the following solution:2.00 mol glucose in 4.00 L solution.
1. 1 answer
2. 508 views
why is C4H10 the simplest alkane that can have structural isomers?
1. 1 answer
2. 579 views
Ammonia and oxygen react to form nitrogen and water.4NH3(g)+3 O2(g)-2N2(g)+6H2O(g) a.How many grams of O2 are needed to react
1. 2 answers
2. 2,235 views
calculate the molarity of each of the following solution:2.00 mol glucose in 4.00 L solution.
1. 0 answers
2. 492 views
which of the following molecules can have optical isomers?a. CH2Cl2 b. H2NCH(CH3)COOH c. ClCH(OH)CH2Cl is b and c
1. 0 answers
2. 722 views
draw the structural formula of 2-methyl-2hexene?
1. 1 answer
2. 602 views
why does 2-butene have cis and trans isomers but 1-butene doesn't?
1. 0 answers
2. 540 views
why is C4H10 the simplest alkane that can have structural isomers?
1. 0 answers
2. 534 views
Ammonia and oxygen react to form nitrogen and water.4NH3(g)+3 O2(g)-2N2(g)+6H2O(g) a.How many grams of O2 are needed to react
1. 1 answer
2. 1,584 views
carbon disulfide and carbon monoxide are produced when carbon is heated with sulfur dioxide.5C(s)+2SO2(g)-CS2(I)+4CO(g) a. how
1. 1 answer
2. 1,625 views
determine the correct answers to the calculation shown below to the correct number of significant figures?a.
1. 2 answers
2. 1,046 views
determine the correct answers to the calculation shown below to the correct number of significant figures?a.
1. 0 answers
2. 526 views
what is the explanation of 0.01M acetic acid ?
1. 1 answer
2. 400 views
what is the explanation of the pure acetic acid?
1. 1 answer
2. 341 views
if one can find the ratio of the number of moles of the elements in a compound to one another, one can find the formula of the
1. 1 answer
2. 2,498 views
how much 0.150 M sodium hydroxide would be required to just neutralize 15 ml of 0.175 M hydrochloric acid?
1. 1 answer
2. 528 views
If all the students placed their "unused" standard sodium hydroxide back into the original container what would be the likely
1. 1 answer
2. 858 views
Why is it unnecessary to measure precisely 25.00 ml of unknown acid into the beaker?
1. 1 answer
2. 488 views
How do you know when you have added too much standard base(exceeded the endpoint)?
1. 1 answer
2. 425 views
what is the perpose of the phenolphthalein solution?
1. 1 answer
2. 292 views
what would be the effect of placing the standard sodium hydroxide in a baker which contained some residual water in the beaker?
1. 2 answers
2. 519 views
if one had one gallon of sodium hydroxide solution which had a concentration of four gallons of the acid?
1. 3 answers
2. 517 views
if you were to splash a basic solution into your eyes, what should be your immediate response?
1. 1 answer
2. 333 views
suppose you had 5 gallons of sodium hydroxide solution with a concentration of two pounds of sodium hydroxide per gallon.what is
1. 1 answer
2. 499 views
a volatile liquid was allowed to evaporate in a 43.298g flask that has a total volume of 252 mL.,the temperature of the water
1. 1 answer
2. 651 views
what is the molar mass of the copper oxide?
1. 1 answer
2. 412 views
What's the answer to cscθ + cotθ ?I keep getting (1+ cosθ)/ sinθ
1. 1 answer
2. 483 views
Can (1 + cosθ)/sinθ be simplified further?
1. 1 answer
2. 392 views
How do I simplify tan θ + cot θ ?Or is it already simplified?
1. 1 answer
2. 559 views
Is the answer to: cosθ, if tanθ = 1 and 180° < θ < 270° ; (√ 2)/2 ?
1. 1 answer
2. 931 views
3tanØ * cotØ + 4sinØ * cscØ + 2cosØ * secØI got 9, is that correct? Please and thank you.
1. 1 answer
2. 492 views
As the answer to:(tanØ * cosØ/ sinØ) + cotØ * sinØ * tanØ* cscØ I got 2, is that correct?
1. 1 answer
2. 556 views
in the one you helped me with, where did this come from: Where did this part come from?- (sin^2Ø + cos^2Ø)
1. 2 answers
2. 416 views
Can someone tell me how to do this problem?(sin^2 θ - cotθ * tan θ)/ cotθ * sin θ Please and thank you.
1. 2 answers
2. 439 views
How do I solve tan of theta * cot of theta? I got 1. Is that right?
1. 1 answer
2. 351 views
So I have to write an English essay on Richard Wright's Black Boy. And the topic I got was to "discuss moral themes throughout
1. 2 answers
2. 713 views
Are the answers to these correct?Use log(base12)3= 0.4421 and log(base12)7= 0.7831. log(base12)36 = log(base12)3^2*4= 4.8842
1. 1 answer
2. 551 views
an aqueous solution of calcium chloride boils at 101.3 degrees Celsius. How many kilograms of calcium chloride were dissolved in
1. 1 answer
2. 1,479 views
Could a Bronsted-Lowry acid not be an Arrhenius acid? Explain.Could someone explain the answer to me?
1. 3 answers
2. 803 views
Could a Bronsted-Lowry acid not be an Arrhenius acid? Explain.Could someone explain the answer to me?
1. 0 answers
2. 537 views
Can someone help me figure these out? I think if someone can explain how to do one of them then I'll be able to do the other.
1. 0 answers
2. 613 views
Can someone help me figure these out? I think if someone can explain how to do one of them then I'll be able to do the other.
1. 0 answers
2. 1,251 views
How do I draw the diagram/graph for this problem?Find the exact values of the six trigonometric functions of theta if the
1. 1 answer
2. 1,180 views
An equilibrium mixture at 852 K is found to contain 3.61 x 10^ - 3 mol/L SO3. Calculate the equililbrium , constant , keq for
1. 5 answers
2. 1,234 views
Dilution calculation: use the formula M1V1=M2V2How many milliliters of 12 M HCl would be needed to make 200 mL of a 1.0 M HCl
1. 1 answer
2. 1,060 views
Whether A dissolves in B depends on a [imbalance, balance] between favorable entropy and favorable enthalpy.One of the two
1. 1 answer
2. 505 views
Whether A dissolves in B depends on a [imbalance, balance] between favorable entropy and favorable enthalpy.One of the two
1. 1 answer
2. 1,173 views
What other artists use a style similar to M.C. Escher and his patterns?
1. 1 answer
2. 396 views
Regarding previous post: I don't understand what I'm doing. My book says the answer is .50 M Ba(NO3)2 but I'm not getting that.
1. 4 answers
2. 465 views
I don't understand how to do this problem.You mix 1.00 L of 2.00 M BaCl2 with 1.00 L of 2.00 M AgNO3. What compounds remain in
1. 5 answers
2. 589 views
If 0.125 L of a 0.100 M solution of Ba(OH02 are mixed with 0.200 L of a 0.0750 M solution of H3PO4, the following reaction takes
1. 1 answer
2. 873 views
I have these two questions on my section review that I don't know how to answer. Can someone help me? Please and thank you.3.
1. 3 answers
2. 2,916 views
Yellow CdS pigment is prepared by reacting ammonium sulfide with cadmium nitrate. What mass of CdS can be prepared by mixing
1. 1 answer
2. 1,631 views
An excess of zinc is added to 125 mL of 0.100 M HCl solution, What mass of zinc chloride is formed?Zn + 2HCl ----> ZnCl2 + H2
1. 5 answers
2. 2,419 views
Assume that you are a manager of a bank branch.Write a list of the implications of intangibility for you firm?
1. 0 answers
2. 906 views
how do i Write an expanded expression for the volume of the cube with a side length of 3x+2 cm.
1. 1 answer
2. 1,240 views
Classify the following mixtures as homogenous(H) or heterogenous(HT):a.lemon juice-H (I'm guessing there's no pulp) b.tap water
1. 3 answers
2. 1,859 views
Can someone try this out so I can see if I'm correct?An 870 g river water sample contains 2 mg of cadmium. Express the
1. 2 answers
2. 1,301 views
We did a lab on iodine sublimation. I don't really understand what is going on so can someone clarify it for me? My teacher also
1. 1 answer
2. 496 views
How do I expand these powers?(a - b/2)^4 (2- m/2)^5
1. 0 answers
2. 383 views
Get Rich Quick Investments LTD offers 2 investment schemes.Scheme 1: Earn 6.5% interest per year, compounded monthly. Scheme 2:
1. 1 answer
2. 571 views
what is the laboratory procedure for separating two volatile liquids?
1. 1 answer
2. 438 views
a room is 18 feet long and 14 feet wide with walls 10 feet high. If one can of paint covers 450 square feet, how many cans of
1. 1 answer
2. 676 views
If the measure of an exterior angle of a triangle is 75 degrees, then what are the measures of the two remote interior angles?
1. 1 answer
2. 1,193 views
How do I find the first five terms of each sequence?a(1)=3, a(n+1)=a(n)+5 The things in the parentheses are subscripts.
1. 2 answers
2. 410 views
We're going to read a book about people with electroshock therapy (ECT). I am doing a short presentation on it, but on what it
1. 2 answers
2. 607 views
How do we treat a long term investment in the B/S, does it go under fixed assets or under current assets?Thanks
1. 0 answers
2. 377 views
Tetraphosphorus trisulphide (P4S3) is used in the match heads of some matches. It is produced in the reaction 8P4+3S8 --> 8P4S3.
1. 4 answers
2. 9,985 views
In thermodynamics, the standard pressure is 100 kPa. What is this value in units of atmospheres.I got 9.86x10^-7 atm but the
1. 3 answers
2. 1,351 views
According to the kinetic-molecular theory, gases are highly compressible because the particles of they consist:a. lose energy
1. 1 answer
2. 1,563 views
cordyline terminails is the botanical name of the
1. 1 answer
2. 1,015 views
According to this chemical reaction, which is the number of grams of Fe produce from 14 moles of H2?
1. 1 answer
2. 488 views
Calculate the total amount (in moles) of Ca and Mg present in a sample of water that required 12.86 ml of 0.0005M EDTA solution
1. 1 answer
2. 480 views
Calculate the enthalpy change for the following equation:NO(g)+ 1/2O2(g) -----> NO2(g) I have no clue how to do this. I just
1. 2 answers
2. 3,165 views
What are the molar heat capacities of: H2O(l) NaCl and Tungsten? I got75.32 J/K*mol 50 J/K*mol 24.8 J/K*mol
1. 3 answers
2. 712 views
A 600 N uniform rectangular sign 4.00 m wide and 3.00 m high is suspended from a horizontal, 6.00-m-long, uniform, 90-N rod. The
1. 8 answers
2. 1,351 views
A 0.006-kg bullet traveling horizontally with a speed of 1.00 103 m/s enters an 21.1-kg door, imbedding itself 10.4 cm from the
1. 5 answers
2. 8,507 views
Four objects - a hoop, a solid cylinder, a solid sphere, and a thin, spherical shell - each has a mass of 4.59 kg and a radius
1. 2 answers
2. 7,688 views
The SI temperature unit is Celsius?A kelvin is the same temperature interval as a degree______? A temperature difference taken
1. 1 answer
2. 814 views
what does "explain why this character's ... is significant to the meaning of the work of literature" mean?
1. 1 answer
2. 443 views
How do you balance this equation?Zn(s) + HNO3(aq)--> Zn(NO3)2(aq) + N2O(g) + H2O(l)
1. 3 answers
2. 2,446 views
A satellite of mass 220 kg is launched from a site on Earth's equator into an orbit at 200 km above the surface of Earth.(a)
1. 17 answers
2. 1,164 views
The maximum lift force on a bat is proportional to the square of its flying speed v. For the hoary bat (Lasiurus cinereus), the
1. 5 answers
2. 1,630 views
A massless spring of constant k = 88.9 N/m is fixed on the left side of a level track. A block of mass m = 0.50 kg is pressed
1. 6 answers
2. 622 views
A synchronous satellite, which always remains above the same point on a planet's equator, is put in orbit around Neptune so that
1. 15 answers
2. 3,330 views
Carbon Dating: Use the formula y= ae^-.00012t where a is the initial amount of carbon-14 , t is the number of years ago the
1. 0 answers
2. 745 views
Carbon Dating: Use the formula y= ae^-.00012t where a is the initial amount of carbon-14 , t is the number of years ago the
1. 4 answers
2. 1,448 views
In stoichiometry, chemists are mainly concerned witha. types of bonds found in compounds b. energy changes occuring in chemical
1. 3 answers
2. 2,143 views
2e^x - 3 =1I got x= .6931 is this right?
1. 1 answer
2. 318 views

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