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lavonne
Questions and answers by
lavonne
Questions (41)
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?
2 answers
807 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?
6 answers
2,582 views
if a certain pressure supports a 256 column of mecury, how high a column of water would it support?
4 answers
1,344 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
4 answers
1,794 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
4 answers
3,272 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.
4 answers
4,224 views
Calculate the density of chlorine gas in g/L, at STP
I'm coming up with 3.2g/L (by using 70.9 g Cl2) Cl gas is diatomic, correct?
3 answers
3,780 views
Calculate the pressure of 0.55 mol NH3 gas in a 2.00 L vessel at 25 celsius, using ideal gas law.
3 answers
1,980 views
How many grams of CO2 are contained in 550 mL of the gas at STP
I've worked all of these questions and I'm trying to see if I'm
2 answers
890 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.
2 answers
681 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 answer
737 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 answer
1,059 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 answer
522 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.
4 answers
1,065 views
A hydrocarbon sample was burned in a bomb calorimeter. The temperature of the calorimeter and the 1.00 kg of water rose from
4 answers
1,557 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
4 answers
1,589 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
4 answers
3,660 views
Data: C(graphite) + O2(g) forms CO2 (ga) Delta H = -393.5kJ
H2(g) + 1/2O2(g) forms H2O(l)Delta H = 285.8kJ. CH3OH(l) +
2 answers
906 views
What is the bond angle for H2O2 abd what is the bond angle and how would you draw ClO3-
1 answer
474 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
2 answers
1,483 views
The Rydberg equation, with n1=1, predicts an ultraviolet series of spectral lines of atomic hydrogen. Which of the following
2 answers
691 views
Which of the following is not a one-electron atom
A) H B) He+ C) Li2+ D) Be2+ E) O7+ I know that H, He+, Li2+ and Be3+ are. i
3 answers
910 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
2 answers
864 views
Which of the following is not a one-electron atom
A) H B) He+ C) Li2+ D) Be2+ E) O7+ I know that H, He+, Li2+ and Be3+ are. i
3 answers
433 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
3 answers
1,848 views
The Rydberg equation, with n1=1, predicts an ultraviolet series of spectral lines of atomic hydrogen. Which of the following
2 answers
614 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
2 answers
913 views
The Rydberg equation, with n1=1, predicts an ultraviolet series of spectral lines of atomic hydrogen. Which of the following
4 answers
1,575 views
which of the following sets of quantum numbers (n,l,ml,ms) describes the electron which is most easily removed when a sodium
3 answers
1,654 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
3 answers
1,818 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 answer
381 views
which of the following is not paramagnetic?
a)Co3+ b)Se2- c)Gd (element 64) d)Ni e)Gd3+
4 answers
1,053 views
which of the folllowing species is not isoelctric with any of the others?
a)V3+ b)Ca2+ c)Ar d)CL- e)S2-
5 answers
1,349 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 answer
444 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.
2 answers
549 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
4 answers
2,176 views
What is the density of CO2 gas at -25.2 degrees celsius and 98.0kPa?
2 answers
758 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
2 answers
1,053 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
3 answers
583 views
What is the density of CO2 gas at -25.2 degrees celsius and 98.0kPa?
3 answers
1,080 views
In what area of medicine did the Incas make the most notable advances?
1 answer
196 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.
