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twynna
Questions and answers by visitors named
twynna
Questions (40)
How many grams are there in 2 moles of sodium?
1 answer
370 views
What is the percentage composition of nitrogen in silver nitrate?
3 answers
1,534 views
Do 65 grams of oxygen and 44 grams of carbon contain equal number of atoms? Calculate the number of atoms?
1 answer
429 views
What is the name of the following compounds?
A)CO B)HCI2O
3 answers
471 views
How many grams are there in 2 moles of each of the following?
A)Xe2 B)C6H12O6 C)CH3COOMg
1 answer
334 views
Calculate the number of moles and atoms.
A)64 gm of O2 B)58.9gm of CI C)90.5gm of (NH4)2SO4 D)243gm of Mg2 Please help i have NO
2 answers
1,106 views
A sample of helium gas has a volume of 325l at 25c and at 5atm. At what temperature the gas can be compressed at 50atm to a
1 answer
457 views
The volume of a gas is 435ml at 25c and at 740mmHg.What would be its new volume at STP?
1 answer
348 views
How many moles of argon gas are present in 70l of volume with a pressure of 280atm at 21c?
1 answer
447 views
what is the % mass/volume (%W/V)of KOH in 60ml of a solution that contains 5gn of KOH?
2 answers
580 views
How many moles of KBr are there in 35.8ml of a 0.172M solution?
1 answer
346 views
How many moles of KBr are there in 35.8ml of a 0.172M solution?
1 answer
309 views
How many grams of NaOH are there in 2.5L of a 0.343M solution?
1 answer
358 views
Calculate the formula mass of each of the following compounds:
A)H2O3 B)AI2I6 C)C10H22 D)C6H8O6 E)K2CR2O7 F)C56H88O2
2 answers
507 views
Calculate the percentages of C,H,and O in C24H44O22.
1 answer
374 views
Calculate the empirical formula of each compound from the mass-composition data given below.
A)41%N and 59%O B)45%Na,23%P and
1 answer
426 views
How many grams are there in 2 moles of each of the following?
A)Xe2 B)C6H12O6 C)CH3COOMg
1 answer
346 views
Calculate the number of moles and atoms.
A)64 gm of O2 B)58.9 gm of CI C)90.5gm of (HN4)2SO4 D)243gm of Mg2
2 answers
874 views
Calculate the number of grams in each of the following:
A)0.5 moles of F2 B)10.25 moles of H2 C)11.3 moles of BaSO4
3 answers
444 views
How many moles of KBr are there in 35.8ml of a 0.172M solution?
1 answer
459 views
How many grams of NaOH are there in 2.5L of a 0.343M solution?
1 answer
294 views
what volume of a 0.34M MgCI2, solution is required to make 250ml of a 0.10M solution by dilution?
1 answer
458 views
A sample of helium gas has a volume of 325L at 25C and at 5atm. At what temperature the gas can be compressed at 50atm to a
2 answers
508 views
What is the molar concentration of calcium hydroxide that has 0.185g solute in 100ml solution?
5 answers
1,149 views
Concentrated nitric acid is 16M. What volume of nitric acid must be diluted with distilled water to prepare 5L of 0.1M nitric
6 answers
1,614 views
A sample of helium gas has a volume of 325L at 25C and at 5atm. At what temperature the gas can be compressed at 50atm to a
2 answers
953 views
How many moles of argon gas are present in 70L of volume with a pressure of 180atm at 21c?
1 answer
382 views
How many moles of Kbr are there in 35.8ml of a 0.172M solution?
1 answer
363 views
How many grams of NaOH are there in 2.5L of a 0.343 M solution?
1 answer
389 views
What volume of a 0.34M MgCI2 soultion is required to make 250ml of a 0.10M solution by dillution?
1 answer
375 views
How would you prepare the following solutions?
A)2%NaCL(w/v) B)0.35M glucose C)0.12M CaCI2
1 answer
349 views
Calculate the molar concentrations for each of the following solutions:
A)1.5g NaCI in 100 ml solution B)1.5g K2Cr2O7 in 100 ml
2 answers
560 views
Concentrated HCI is 12M. What is the molarity of an HCI solution prepared by dilluting 10ml concentrated HCI to a total volume
1 answer
514 views
What is the molar concentration of calcium hydroxide that has 0.185g solute in 100ml solution?
1 answer
409 views
Concentrated nitric acid is 16M. What volume of nitric acid must be diluted with distilled water to preapre 5L of 0.1M nitric
2 answers
553 views
Calculate the percentages of C,H,and O in C22H44O22.
1 answer
380 views
Complete, Balance and classify the chemical reaction....please help do not understand
A)Li(s)+AuCL3(aq)->
2 answers
645 views
Calculate the number of atoms in each of the following.
A)1.50g potassium B)0.470g of oxygen C)0.555g of silver chlorate,AgCIO3
3 answers
685 views
A sample of helium gas has a volume of 325L at 25C and at 5atm. At what temperature the gas can be compressed at 50atm to a
3 answers
1,155 views
How many moles of argon gas are present in 70L of volume with a pressure of 180atm at 21C?
2 answers
533 views
Answers (1)
Can you show me how to work this out. Or give me an example. Please and Thanks
