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LT

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Questions (69)

Manganese has the oxidation number of +5 in ______ . .(A) [MnF6]3– (C) [MnO4]2– (B) Mn2O7 (D) [Mn(CN)6]–
1. 4 answers
2. 2,848 views
1) Find the missing parameter1.mean 15, 30.15 %, above 50; what is the standard deviation 2.mean 75, 5.05% below 30; what is the
1. 4 answers
2. 2,253 views
Fill a balloon with helium gas to a volume of 2.68 L at 23 celsius and 789mmHg. What would the volume of helium if the pressure
1. 3 answers
2. 1,400 views
It is generally believed that electrical problems affect about 14% of new cars. An automobile mechanic conducts diagnostic tests
1. 3 answers
2. 1,123 views
The International Olympic Committee states that the female participation in the 2000 Summer Olympic Games was 42%, even with new
1. 4 answers
2. 1,860 views
The countries of Europe report that 46% of the labor force is female. The United Nations wonders if the percentage of females in
1. 2 answers
2. 1,331 views
2. Herpetologists (snake specialists) found that a certain species of reticulated python have an average length of 20.5 feet
1. 3 answers
2. 1,364 views
6. In 2000, the United Nations claimed that there was a higher rate of illiteracy in men than in women from the country of
1. 2 answers
2. 1,312 views
It is generally believed that electrical problems affect about 14% of new cars. An automobile mechanic conducts diagnostic tests
1. 3 answers
2. 2,229 views
The countries of Europe report that 46% of the labor force is female. The United Nations wonders if the percentage of females in
1. 3 answers
2. 1,023 views
5. The board of directors for Procter and Gamble is concerned that only 19.5% of the people who use toothpaste buy Crest
1. 7 answers
2. 2,012 views
A company claims to have invented a hand-held sensor that can detect the presence of explosivesinside a closed container. Law
1. 4 answers
2. 1,482 views
5. There is some indication in medical literature that doctors may have become more aggressive ininducing labor or doing preterm
1. 1 answer
2. 815 views
How do I tell if this is a mean or a proportion1. Insurance companies track life expectancy information to assist in determining
1. 2 answers
2. 795 views
How do you tell if the null hypothesis rejects or fails?
1. 4 answers
2. 394 views
What if my p value is below 0.05 does it reject or fail the null hypothesis
1. 5 answers
2. 546 views
Can someone help me start this please:There is some indication in medical literature that doctors may have become more
1. 2 answers
2. 550 views
does anyone know how to do statistics
1. 1 answer
2. 312 views
how do i tell if my graph is linear or nonlinear...
1. 3 answers
2. 411 views
what are outliers and influential points in graphs dealing with data
1. 3 answers
2. 606 views
Solve the system by the addition method-10x^2 + 10y^2-320=0 30x^2 + 6y^2 - 336 = 0
1. 2 answers
2. 761 views
How do i solve for the variable3x= sqrt5x+1
1. 1 answer
2. 444 views
Solve for the variablem^2 + 2m +3 > = 0
1. 1 answer
2. 416 views
write in interval notation2x^2 < or = 9x+5
1. 1 answer
2. 465 views
I have to write a short essay on a movie called the seventh seal and I was wondering about a certain part that interested me and
1. 1 answer
2. 405 views
What is the pH of a buffer solution that is 0.15 M propionic acid and 0.20M sodium propionate?How do I start this problem
1. 5 answers
2. 712 views
What is the pH of a buffer solution that is 0.20M methylamine and 0.15 M methylammonium chloride.which do i get the pH of
1. 2 answers
2. 714 views
The pH of a 1.0 x 10^-3 M Ba(OH)2 solution at 25 degrees C ishow can 11.3 be the right answer.
1. 4 answers
2. 1,852 views
a solution saturated in calcium hydroxide(limewater) has a pH of 12.35. What is Ksp for calcium hydroxide?How do i start this
1. 4 answers
2. 2,650 views
what is the molar solubility of lead sulfate in 1.0 X 10^-3 M Na2SO4?The Solubility Product Constant PbSO4 Ksp= 1.8 x 10^-8 The
1. 9 answers
2. 2,905 views
If the concentration of a saturated solution of SrCO3 is 0.000040 mol*L^-1, what is the value for the solubility product
1. 9 answers
2. 1,710 views
If two salts AX and BX2, have the same Ksp values of 4.0x10^-12 at a given temperature, thenA. their molar solubilities in water
1. 4 answers
2. 3,205 views
The dissociation for a weak base BOH in water found to be 1.25 x 10^-6. What is the concentration of H+ in a 3.2M soluton of
1. 6 answers
2. 1,364 views
What is the OH^- concentraton of a solution that is 0.10M in Na2C2O4?I have a couple of these concentration questions asking
1. 3 answers
2. 1,289 views
How do you calculate the pH, pOH, [H3O] and [OH] for a 0.067 M solution of sodium iodate
1. 3 answers
2. 637 views
All of the following species would be expected to be able to function a Lewis bases EXCEPTa. F- b. O2- c. OH+ d. H2O BF3
1. 2 answers
2. 713 views
Which one of the following salts is obtained by the reation of a weak acid with a strong base.MgCl2 NH4F LiClO4 NaCl K2SO3
1. 2 answers
2. 560 views
Equal volumes of 1 M BaCl2 and 1 M NaSO4 are mixed. What effect will the addition of more Na2SO4 solution have on the
1. 4 answers
2. 1,013 views
The ionization constant of an acid, HX is 1 x 10^-5. When a mixture of 0.100 mol HXand 0.100 mol of NaX is diluted to a volume
1. 2 answers
2. 745 views
What is the molar concentration of silver ion in a solution containing 1.3 × 10–4 M CrO42–, saturated with Ag2CrO4?The
1. 3 answers
2. 1,061 views
Enough water is added to 0.35 g of benzoic acid to make 1000 mL of solution. What is the pH?Ionization Constant for Benzoic Acid
1. 4 answers
2. 849 views
Are any of you a teacher... I have an important question that has to a teacher
1. 4 answers
2. 358 views
what is an Incipient Civilizations
1. 1 answer
2. 370 views
Ok this is what i got for the grams part now....Total mass is 20.14 + 51.64 + 11.34 + 15.06 = 98.18 %H2O = (20.14/98.18)*100 =
1. 2 answers
2. 538 views
How do I find the percent composition ofH2O: 20.14grams C2O4: 51.64grams Fe 3+: 11.34grams K^+: 15.06 grams and the empirical
1. 4 answers
2. 512 views
Dr. Bobok well here is what i have gotten so far: on the problem H2O: 1.118 mol C2O4: .58681 mol Fe 3+: .2025 mol K^+: .3862 mol
1. 2 answers
2. 572 views
How do i write a good discussion/conclusion for a lab report.
1. 2 answers
2. 603 views
Ok this is what i got for the grams part now....Total mass is 20.14 + 51.64 + 11.34 + 15.06 = 98.18 %H2O = (20.14/98.18)*100 =
1. 6 answers
2. 602 views
Create at least two arguments each pro- and contra the establishment of a Global Culturedoes any one know about global culture
1. 3 answers
2. 567 views
Free sulfur may act as either an oxidizing agent or a reducing agent. What is the bestexperimental evidence for this statement?
1. 4 answers
2. 684 views
In the chemical reaction, .Zn(s) + CuSO4(aq) �¨ ZnSO4(aq) + Cu(s), (A) metallic zinc is the reducing agent. (B) metallic zinc
1. 6 answers
2. 2,622 views
Which reaction will occur if each substance is in its standard state?(A) Ni2+ will oxidize Sn2+ to give Sn4+ (B) Sn4+ will
1. 2 answers
2. 1,044 views
Which statement is true for the cell as it discharges?Zn | Zn2+(1 .0 M) || Sn2+(1.0 M) | Sn (A) Oxidation occurs at the tin
1. 6 answers
2. 2,157 views
Which process represents a general method for the preparation of a metal from itscompounds? . (A) neutralization (D) fusion (B)
1. 7 answers
2. 658 views
During the electrolysis of an aqueous solution of CuSO4 with inert electrodes(A) the anode loses mass and the cathode gains
1. 6 answers
2. 3,432 views
In every electrolytic and galvanic (voltaic) cell the anode is that electrode(A) at which oxidation occurs. (B) which attracts
1. 6 answers
2. 698 views
For there reaction system involving the species in the table below, what conclusion isjustified for standard state conditions?
1. 7 answers
2. 724 views
If the ratio of two pulleys, A and B is 4:3, and pulley B has a length of 13.5 inches, how long is pulley A?[a] inches how do i
1. 1 answer
2. 388 views
how do i find the height of a trianglethe base is 18 inches, the angled side is 82 inches and it is a right triangle
1. 5 answers
2. 457 views
My teacher is asking me to "Create a two-part answer for the concepts below"what is a two part answer
1. 1 answer
2. 380 views
(square root of x+7)-5 = xOnly the x+7 is square rooted how do I find the solution set???
1. 1 answer
2. 368 views
(X+1)/2 = 4 - (X+2)/7
1. 1 answer
2. 309 views
Why is it important to know an accurate VO2 max value when prescribing exercise?
1. 2 answers
2. 523 views
y = sin (x - Pi sign)amplitude: period: phase shift:
1. 1 answer
2. 442 views
The sum of the squares of two numbers is 2. The product of the two numbers is 1. Find the numbers.xy=1 x^2+y^2=2 x^4+1=2x^2
1. 3 answers
2. 1,890 views
x+y=-4(x-2)^2+(y+7)^2=13 solve by substitution
1. 1 answer
2. 356 views
What does Thomas Paine value highly in the excerpt from his essay “The Crisis”?Freedom Solitude Individuality Spirituality
1. 3 answers
2. 747 views
Choose one archetype that is illustrated by two or more of the stories you have read, and write a brief essay explaining what an
1. 2 answers
2. 670 views
describe the preparation of 100mls of 1,0M from concentrated HCL?
1. 1 answer
2. 386 views

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