Questions and answers by

cheri

Questions (129)

How many grams of sucrose (C12H22O11)must be dissolved in 200 g water to make a solution in which the mole fraction of su- crose
1. 3 answers
2. 2,457 views
Calculate the molality of acetone in anaqueous solution with a mole fraction for ace- tone of 0.171. Answer in units of m
1. 1 answer
2. 1,109 views
How many milliliters of 5.5 M HCl must betransfered from a reagent bottle to provide 23 g HCl for a reaction? Answer in units of
1. 1 answer
2. 516 views
What mass of MgSO4 · 7H2O is required toprepare 300 mL of a 0.61 M MgSO4 solution? Answer in units of g
1. 1 answer
2. 791 views
It takes 62 mL of 0.124 M KOH to neutralize46.7 mL of H2SO4 solution. What is the concentration of the H2SO4 solution? Answer in
1. 1 answer
2. 875 views
Calculate the molality of CsCl in a 19% bymass aqueous solution.
1. 1 answer
2. 864 views
When 0.025 moles of aluminum sulfate aredissolved in enough water to make 115 milliliters of solution, what is the molarity of
1. 1 answer
2. 2,557 views
We have an aqueous solution that contains47% (by mass) of a hypothetical solute Z. The formula weight of the solute Z is 209
1. 2 answers
2. 854 views
Sulfuric acid (H2SO4) is a very strong diproticacid. If 0.062 moles of sulfuric acid is mixed with water to make 200 mililiter
1. 1 answer
2. 1,165 views
How many milliliters of 5.5 M HCl must betransfered from a reagent bottle to provide 23 g HCl for a reaction? Answer in units of
1. 3 answers
2. 753 views
It takes 62 mL of 0.124 M KOH to neutralize46.7 mL of H2SO4 solution. What is the concentration of the H2SO4 solution? Answer in
1. 1 answer
2. 1,190 views
What volume of 6.58 M HNO3 is required toprepare 671 mL of a 2.7 M HNO3 solution? Answer in units of mL
1. 1 answer
2. 575 views
What mass of MgSO4 · 7H2O is required toprepare 300 mL of a 0.61 M MgSO4 solution? Answer in units of g
1. 1 answer
2. 2,828 views
What volume of 6.58 M HNO3 is required toprepare 671 mL of a 2.7 M HNO3 solution?
1. 1 answer
2. 451 views
It takes 62 mL of 0.124 M KOH to neutralize46.7 mL of H2SO4 solution. What is the concentration of the H2SO4 solution?
1. 1 answer
2. 440 views
Sulfuric acid (H2SO4) is prepared commer-cially from elemental sulfur using the contact process. In a typical sequence of
1. 1 answer
2. 675 views
The reaction of 9.5 grams of fluorine withexcess chlorine produced 5.9 grams of ClF3. What percent yield of ClF3 was obtained?
1. 2 answers
2. 1,282 views
In the reaction below, 22 g of H2S with excessO2 produced 10 g of sulfur. ?H2S + ?O2 ! ? S + ?H2O. What is the percent yield of
1. 3 answers
2. 1,484 views
Sulfuric acid (H2SO4) is prepared commer-cially from elemental sulfur using the contact process. In a typical sequence of
1. 1 answer
2. 1,292 views
A 26.3754 g sample of impure magnesium car-bonate was heated to complete decomposition according to the equation MgCO3(s) !
1. 1 answer
2. 552 views
An ore contains Fe3O4 and no other iron. Theiron in a 54.6-gram sample of the ore is all converted by a series of chemical
1. 2 answers
2. 1,171 views
A 25.2 g of iron ore is treated as follows. Theiron in the sample is all converted by a series of chemical reactions to Fe2O3.
1. 1 answer
2. 1,278 views
If a metal ore contains 21.9% pure metal, howmany pounds of pure metal can be obtained from 68 pounds of metal ore? Answer in
1. 1 answer
2. 599 views
5-(4y+5)=3+2(4y-6)how do i combine like terms and what do i do with these()?
1. 2 answers
2. 393 views
a 7 yr old boy breaks his tibia and requires immobility by a hard cast for 6 weeks initl it heals. a potential consequence of
1. 1 answer
2. 402 views
An electronics store receives a shipment of 20 graphing calculators, including 3 that are defective. Four of the calculators are
1. 3 answers
2. 7,571 views
What number am IMy tens digit is double my ones digit. I am less than 70 greater than 60? How do u figure this out need help to
1. 5 answers
2. 316 views
Number sence What is the number?It is greater than 43 and less than 52. If you add the digit, the sum is 8. write the number
1. 1 answer
2. 488 views
There is a regression model. E= a+bn. Where E is total earnings of the motion pictyre industry measured in dollars per year and
1. 1 answer
2. 503 views