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treasa
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treasa
Questions (26)
. A 0.428-gram sample of a mixture of the solids, KCl and KClO3, is heated. If 80.7 mL of oxygen gas is collected over water at
2 answers
918 views
What is the final temperature when 54g ice at 0oC is mixed with 200g water at 65oC
2 answers
833 views
what is the final temperature of amixture containning 25 grams of ice at -20 degree celciusadded to water at room temperature
1 answer
437 views
What is the energy released when steam at 25 g of steam at 10 degree celcius is cooled to ice at-10 degree celcius
work heat
2 answers
845 views
what is the final temperature of amixture containning 25 grams of ice at -20 degree celciusadded to water at room temperature
2 answers
639 views
what is the final temperature of amixture containning 25 grams of ice at -20 degree celciusadded to water at room temperature
5 answers
616 views
what is the final temperature of amixture containning 25 grams of ice at -20 degree celciusadded to water at room temperature
1 answer
464 views
A disc of wax has several hot metal sampes placed on it. The samples are of diffrent metals. They are all at the same
4 answers
828 views
you wish to combine two samples, one sample contains is solid water at 0 degree celsius.The other sample contains liquid water
3 answers
540 views
you wish to combine two samples, one sample contains is solid water at 0 degree celsius.The other sample contains liquid water
2 answers
561 views
you wish to combine two samples, one sample contains is solid water at 0 degree celsius.The other sample contains liquid water
2 answers
574 views
you wish to combine two samples, one sample contains is solid water at 0 degree celsius.The other sample contains liquid water
2 answers
731 views
A sample of gas (1.9 mol) is in a flask at 21 °C and 697 mm Hg. The flask is opened and more gas is added to the flask. The new
3 answers
1,949 views
What is the Ka of a weak acid (HA) that produces a pH of 3.45 with 0.1M?
2.54E-3 3.45E-3 1.27E-6 3.56E-3 5.48E-4
2 answers
523 views
Calculate the volume of fuel needed for a flight if the jet fuel has a density of 0.803kg/L.First use dimensional analysis to
2 answers
747 views
Calculate the volume of fuel needed for a flight if the jet fuel has a density of 0.803kg/L.First use dimensional analysis to
4 answers
2,306 views
If it costs $3.92 for a gallon of gas, and I fill up with 13.5 gallons once each 1.5 weeks, how much am I spending on gas in a 5
1 answer
407 views
230Th+He____223Po+2 2H+-----
please complete this equation
1 answer
337 views
8.10 g metal combines with 7.20g of oxygen to form X2O3. What is the relativ
e mass of X
2 answers
523 views
Why people feel thirsty after eating salty foods. explain in terms of colligative property
1 answer
353 views
A restaurant serves tea in aluminum mugs. The aluminum mug has a mass of 125 g, initially at 24.0 oC with 341 mL tea at 80.0oC.
2 answers
538 views
1)Thallium (I) is oxidized by cerium (IV) as follows: Tl+ + 2 Ce+4 Tl+3 + 2 Ce+3
The elementary steps, in the presence of
4 answers
1,249 views
are all concurrent lines are intersecting lines?
1 answer
393 views
Energy must be transferred into or out of a system in order to cause phase change.In addition changes in the energy can be
1 answer
419 views
Energy must be transferred into or out of a system in order to cause phase change.In addition changes in the energy can be
1 answer
479 views
Energy must be transferred into or out of a system in order to cause phase change.In addition changes in the energy can be
2 answers
500 views
Answers (2)
Molarity=moles/volume in liters 2.5moldm^-3=moles/0.500dm^3 moles=2.5x0.500=1.25 moles
i don't understand can you make it clear
