2018-10-28 02:08
Chemistry if8766 all pages for direct download in image format, clear images with direct answersfor homework helpincludes:page 9 - significant figurespage 12 - temperature and its measuremen… Read More
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2018-10-06 00:21
Analytical Chemistry SELECTED CONSTANTS, UNITS, AND CONVERSION FACTORS[The uncertainty in the last digit(s) is shown italicized in parentheses]Atomic mass constant: mu = 1.660 53… Read More
2018-10-06 00:11
Fictitious acid (H3Fi) is a triprotic acid with pKa values of precisely 4.00, 7.00,and 10.00. Calculate the theoretical pH of the following solutions. … Read More
2018-10-05 00:09
Assuming there is no hydrolysis or complexation of the ions formed, calculate the concentration of the calcium ion in a solution that is saturated with(a) Calcium fluoride, CaF2… Read More
2018-10-05 00:07
Calculate the change in pH that occurs when 0.050 mmol of a strong acid(such as HCl) is added to 100 mL of 0.0200 M lactic acid plus 0.0800 M sodium lactate. (CH3CHOHCOOH, Ka = 1.38 x 1… Read More
2018-10-05 00:05
The concentration of an additive in a standard sample of gasoline was measured 5 times with the following results: 0.13, 0.11, 0.12, 0.20, and 0.14 % by mass. (a) Calculate… Read More
2018-10-05 00:03
Ferrous ammonium sulfate was used as a standard for iron in the absorbanceexperiment in lab. The stable solid weighing form has the formula Fe(NH4)2(SO4)2Q6H2O. Write all the char… Read More
2018-10-05 00:00
The atomic mass of fluorine is currently listed on periodic tables as18.998403 g/mol, the most precisely known atomic mass for a naturally occurring element. The least well known is tha… Read More
2018-10-04 23:41
Q: A substance has density of 2 kg dm-3 and it crystallizes to fcc lattice with edge length equal&nbs&hell…Read More
2018-10-04 12:08
NaHCO3=Na2CO3+H2O+CO2NaHCO3=Na2CO3+H2O+CO2The law of conservation of mass states that matter cannot be created nor destroyed. There are no more or less atoms at… Read More
2018-10-01 23:12
These terms are from basic enzyme kineticsVm is the maximum velocity of an enzymatic reaction.Km is the dissociation constant of the enzyme-substrate complex Read More
2018-09-30 13:11
in this video we're going to look at howto balance chemical equations so I havean example up here on the screen rightnow where we have h2 which is hydrogenplus CL 2 which is chlorine and whe… Read More
2018-09-29 23:10
In the equation: n=V/Vm , What does the Vm stand for? Short Answers:Vm (The molar volume) is the volume occupied by one mole of a substance at a given temperature and pressure… Read More
2018-09-23 23:08
cm^3 stands for cubed centimeter, i wonder what does dm^3 in chemistry stands for...i know that in order to get dm^3 you'll have to divide the value in cm^3 by 1000, wat about getting dm fro… Read More
2018-09-20 23:06
millimolar so: 1 M = 1000 mMM in chemistry stands for molarity, measured in moles per liter. m stands for "milli" in most fields. So this is a 0.005 M solution of sodium nitrate. There… Read More
2018-09-20 23:04
let's look at how to write names forcompounds like these that are made oftwo nonmetals the nonmetals are theelements to the right of the staircaseon the periodic table nowcompounds like thes… Read More
2018-09-20 23:01
in this video we're going to look at howto convert units using conversionfactors like this in canceling unitssome people call this dimensionalanalysis some people call the factorlabel method… Read More
2016-03-07 09:50
Here is how the physics represented in everyday life activities, I list here some examples but not all, because physics theories and applications cannot be counted all.Science student must k… Read More
2016-03-01 09:39
3y + 6x = 24 5= 4y - 3x Solve 7y + 7x = 21x + 35 for y Solve 4m - (2n to the 2nd power) = 2m - 72 for m Solve 9g + 7h = 9g - 7h + g for g Solve 3/4 r - 1/2 = 1_1/4 r + 8s for r Relative Answ… Read More
2015-01-24 19:30
What does it mean when a solution is 1 molar in a substance?micro-grams of substance per liter solution milligrams of substance per gram solution moles of substance per liter solutionmilligr… Read More
2015-01-24 11:30
You need to make 100. ml of a 0.0500 M solution of aluminum from a 2.00 M stock of aluminum nitrate. What do you do?Add 5.00 ml of stock to a volumetric flask, and dilute to 100. ml with wat… Read More
2015-01-24 00:00
You have 25 mg of sodium sulfate in 3L of water. What is the molarity of sodium sulfate in this solution?5.87E-05 5.87E-02 None of the above1.72E-04 6.89E-05Do not forget to Check the molecu… Read More
2015-01-23 19:30
If you have 6.00 moles of aluminum nitrate how many moles of nitrate do you have?6.0012.00 18.0 3.00 1.00Remember that:Aluminum is +3 and nitrate is -1 so there are three nitrates for every… Read More
2015-01-23 12:19
You have 25. ml of a solution of trisodium phosphate. After running an atomic analysis, you find a concentration of 10. ppm sodium. How many moles of sodium phosphate are in 25 ml of this so… Read More
2015-01-23 10:01
Who needs this course?For advanced undergraduate chemistry students which have a basic familiarity with freshman chemistry.Course SyllabusThis course will provide students with a background… Read More
2014-02-26 07:29
What is the Kcal? and what does the calorie means?The name calorie is used for two units of energy. The small calorie or gram calorie (symbol: cal) is the approximate amoun… Read More
2014-02-14 16:29
If we arrange the items the 109 or more in accordance with the increase in atomic numbers, we get a specific form or a symmetric distribution, we find similarity between the item on top of t… Read More
2014-02-09 14:48
Organic chemistry is a chemistry sub-discipline involving the scientific study of the structure, properties, and reactions of organic compounds and organic materials, i.e., matter in its var… Read More
2014-02-08 17:19
Mole is a unit of measurement used in chemistry to express amounts of a chemical substance, defined as the amount of any substance that contains as many elementary entities (e.g., atoms, mol… Read More
2014-02-08 15:50
Biochemistry is the branch of chemical science concerned with the chemical and physicochemical processes that occur within living organisms. From the exact definition of the biochemistry: It… Read More
2014-02-08 15:50
Chemical change is the so-called chemical reaction; When one or more substances are altered into one or more new and different substances chemists call that a chemical change.Everyday life e… Read More
2014-02-08 15:50
Many questions arise when we talk about chemotherapy.First we need to know chemotherapy definition:Formally chemotherapy is that branch of chemistry that concerns with the treatment of disea… Read More
2014-02-08 15:50
Concentration, Temperature, Pressure Factors in collision theoryWhat cause the speed of a chemical reaction? The reactions happen over and over but not always at the same speed. A few things… Read More
2014-02-08 15:50
Chemical bonding is more common than we think. When you put two magnets together the bonding is what caused them to stick. Another form of chemical bonding is the metals that make batteries… Read More
2014-02-08 15:50
What is chromatography?Is that branch of chemistry that concerns the separation of a mixture by passing it in solution or suspension or as a vapor (as in gas chromatography) through a medium… Read More
2014-02-08 15:50
If you came here by searching for the science of chemicals and the science that concerns with study of integrity of matter and interactions between particulars (molecules) of that matter, th… Read More
2014-02-08 15:50
We will start here a topic about chemical reaction definitions, one of the most important basic concepts and most used terms is the chemical reaction, the basic routine that chemicals used t… Read More
2014-02-08 15:50
Are they 3 or 4 or 6 or even 10 Types of chemical reactions?How many types of chemical reaction are they?I will dive with you in the amazing chemistry science in this Very long guide to know… Read More
2014-02-08 15:50
Everything is a Chemistry and anything built by a chemical reactionThere are a wide range of products that you use every day, which is developed with the application of a chemical… Read More
2014-02-08 15:50
Unambiguous names and trivial names of Organic chemical compound considered a major obstacle in the face of chemists, scientists, and especially after the discovering of new chemical organic… Read More
2014-02-08 15:47
This topic will discuss: Inorganic chemistry acid base reactions, ap chemistry acid base reactions, chemistry precipitation reactions, what do acid base reactions produce, and hydrocyanic ac… Read More
2013-12-18 08:20
Second year student in study at high school or university is called Sophomore, also sophomore is an US English term used for many other descriptions.Sophomore year in High school is the 10th… Read More
2013-12-04 16:25
In this chapter those topics will be discussed:freedom degree physics and chemistry definition, quadratic degrees of freedom in mechanics, degrees of freedom mastering physics, how to calcul… Read More
2013-05-17 20:49
A long time ago in the 1997, I have been in libraries to read for more information about chemistry concepts and how I could apply the chemistry by my own efforts to help enhance my life&rsqu&hell…Read More
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