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lavonne

Questions (41)

In what area of medicine did the Incas make the most notable advances?
1. 0 answers
2. 235 views
What is the density of CO2 gas at -25.2 degrees celsius and 98.0kPa?
1. 2 answers
2. 1,142 views
A sample of ammonina gas at 65.5 degrees celsius and 524 torr has avolume of 15.31 L. What is it's volume at -15.8 degrees
1. 1 answer
2. 671 views
A sample of ammonina gas at 65.5 degrees celsius and 524 torr has avolume of 15.31 L. What is it's volume at -15.8 degrees
1. 1 answer
2. 1,114 views
What is the density of CO2 gas at -25.2 degrees celsius and 98.0kPa?
1. 1 answer
2. 811 views
How many moles of H+(aq) ions are present in 1.25 L of 0.75M Nitric Acid?A. 0.60 mol B. 0.75 mol C. 0.94 mol D. 1.7 mol E. 1.9
1. 2 answers
2. 2,256 views
Ok, I really need to know how to work problems like these so could someone please show me how to set it up?! Given this data:1.
1. 1 answer
2. 623 views
I have a big exam tomorrow. Can anyone tell me any easy way to figure out the 4 quantum numbers, n, l, ml, and ms. i still get
1. 1 answer
2. 510 views
which of the folllowing species is not isoelctric with any of the others?a)V3+ b)Ca2+ c)Ar d)CL- e)S2-
1. 4 answers
2. 1,443 views
which of the following is not paramagnetic?a)Co3+ b)Se2- c)Gd (element 64) d)Ni e)Gd3+
1. 3 answers
2. 1,110 views
which of the folllowing species is not isoelctric with any of the others?a)V3+ b)Ca2+ c)Ar d)CL- e)S2-
1. 0 answers
2. 412 views
The electron configuration of the outermost electrons of the halogen group is:a)ns2np7 b)ns1 c)ns2np5 d)ns2np6(n-1)d7 e)ns2np6
1. 1 answer
2. 1,869 views
which of the following sets of quantum numbers (n,l,ml,ms) describes the electron which is most easily removed when a sodium
1. 1 answer
2. 1,737 views
The Rydberg equation, with n1=1, predicts an ultraviolet series of spectral lines of atomic hydrogen. Which of the following
1. 3 answers
2. 1,657 views
According to the Heisenberg uncertainty principle, if the uncertainty in the speed of an electron is 3.5 x 10(3) m/s, the
1. 1 answer
2. 994 views
The Rydberg equation, with n1=1, predicts an ultraviolet series of spectral lines of atomic hydrogen. Which of the following
1. 1 answer
2. 687 views
According to the Heisenberg uncertainty principle, if the uncertainty in the speed of an electron is 3.5 x 10(3) m/s, the
1. 1 answer
2. 1,937 views
Which of the following is not a one-electron atomA) H B) He+ C) Li2+ D) Be2+ E) O7+ I know that H, He+, Li2+ and Be3+ are. i
1. 2 answers
2. 482 views
According to the Heisenberg uncertainty principle, if the uncertainty in the speed of an electron is 3.5 x 10(3) m/s, the
1. 1 answer
2. 938 views
Which of the following is not a one-electron atomA) H B) He+ C) Li2+ D) Be2+ E) O7+ I know that H, He+, Li2+ and Be3+ are. i
1. 0 answers
2. 961 views
The Rydberg equation, with n1=1, predicts an ultraviolet series of spectral lines of atomic hydrogen. Which of the following
1. 1 answer
2. 752 views
Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n=3 to n=1 energy
1. 0 answers
2. 1,563 views
What is the bond angle for H2O2 abd what is the bond angle and how would you draw ClO3-
1. 1 answer
2. 535 views
Data: C(graphite) + O2(g) forms CO2 (ga) Delta H = -393.5kJH2(g) + 1/2O2(g) forms H2O(l)Delta H = 285.8kJ. CH3OH(l) +
1. 1 answer
2. 989 views
Data: SO2(g)+ 1/2O2(gas)forms SO3(g)Delta H = -99.1 kJ.Given the above data, calculate the enthalpy change when 89.6 g of SO2 is
1. 1 answer
2. 3,738 views
Data:2Ba(s) + O2(g) ¡æ 2BaO(s) ∆H¡Æ = -1107.0 KJ Ba(s) + CO2(g) + ¨ö O2(g) ¡æ BaCO3(s) ∆H¡Æ = -822.5 KJ Given the
1. 3 answers
2. 1,687 views
A hydrocarbon sample was burned in a bomb calorimeter. The temperature of the calorimeter and the 1.00 kg of water rose from
1. 2 answers
2. 1,658 views
A sample of hydrogen gas was collected over water at 36 degrees celsius and 855 mmHg. The volume of the container was 6.50 L.
1. 2 answers
2. 1,156 views
A 1.325 g sample of an unknown vapor occupies 386 mL at 114 celsius and 946 mmHg. The simplest formula of the compound is NO2.
1. 0 answers
2. 591 views
Convert a gas pressure of 485 cmHg to atmospheres. (cm not mm!)Wouldn't you simple convert cm to mm (4850) and divide by 760
1. 0 answers
2. 1,114 views
If a cetain pressure supports a 256 mm high column of mercury, how high a column of water will it support? The ensity of mercury
1. 0 answers
2. 827 views
A 1.325 g sample of an unknown vapor occupies 386 mL at 114 celsius and 946 mmHg. The simplest formula of the compound is NO2.
1. 1 answer
2. 757 views
How many grams of CO2 are contained in 550 mL of the gas at STPI've worked all of these questions and I'm trying to see if I'm
1. 1 answer
2. 943 views
Calculate the pressure of 0.55 mol NH3 gas in a 2.00 L vessel at 25 celsius, using ideal gas law.
1. 1 answer
2. 2,046 views
Calculate the density of chlorine gas in g/L, at STPI'm coming up with 3.2g/L (by using 70.9 g Cl2) Cl gas is diatomic, correct?
1. 1 answer
2. 3,879 views
The first step in the Ostwald process for making nitric acid is the formation of NO as follows; 4HN3 + 5O2 makes 4NO + 6 H2O.
1. 1 answer
2. 4,305 views
A steel tank contains carbon dioxide at 34 celsius and is at 13.0 atm. Determine the internal gas pressure when the tank and its
1. 3 answers
2. 3,343 views
A steel tank contains carbon dioxide at 34 celsius and is at a pressure of 13.0 atm. Determine the internal gas pressure when
1. 2 answers
2. 1,874 views
if a certain pressure supports a 256 column of mecury, how high a column of water would it support?
1. 2 answers
2. 1,413 views
if 22.5 mL of 0.383 M HCl are required to completely neutralize 20.0 mL of KOH, what is the molarity of the KOH solution?
1. 4 answers
2. 2,673 views
If 20.0mL of an unknown acid was titrated with 2.0 M KOH and 60.0 mL KOH was used what is the molarity of the unknown acid?
1. 1 answer
2. 852 views

Answers (5)

So adding of removing the electrons gives all of them 18 elctrons like Argon except for V3+, correct? Thsi makes it the non-isoelctric species? It wasn't explained to me this way and this makes it much easier to see. Thanks!
Thanks! That was what I thought.
Sorry forgot to post the wavelengths. A) 182nm B) 103nm C) 97nm D) 95nm E) 91nm
Do I need to convert the temperature from Celsius to Kelvin for this equation. The answers are multiple choice and there is one for it using both. Isn't kelvin always used for these type of calculations?
Sorry, its mm of mecury.

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