![subject](/tpl/images/cats/himiya.png)
Chemistry, 03.03.2021 08:00 stefkellum58
Calculate the amount of energy released when 23.85 g of water are cooled from 30 ˚C to 79˚C. The specific heat of water is 4.184.
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 03:40
Astudent is given a sample of a blue copper sulfate hydrate. he weighs the sample in a dry covered porcelain crucible and got a mass of 23.875 g for the crucible, lid, and sample. the mass of the empty crucible and lid was found earlier to be 22.652 g. he then heats the crucible to expel the water of hydration, keeping the crucible at red heat for 10 minutes with the lid slightly ajar. on colling, he finds the mass of crucible, lid, and contents to be 23.403 g. the sample was changed in the process to very light clue anhydrous cuso4. if there are again 100.0 g of hydrate, how many grams of cuso4 are in it? how many moles of cuso4? (hint: molar mass of cuso4 = 159.6 g / mole. what per cent of the hydrate is cuso4? you may convert the mass of cuso4 to moles.)
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 10:00
In a water molecule, hydrogen and oxygen are held together by a(an) bond. a) double covalent b) ionic c) nonpolar covalent d) hydrogen e) polar covalent
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 19:30
How might this scientific phenomena be explained? a paper clip floats on water.
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 00:00
Exit what is the density of an object having a mass of 5.0 g and a volume of 45.0 cm3?
Answers: 1
You know the right answer?
Calculate the amount of energy released when 23.85 g of water are cooled from 30 ˚C to 79˚C. The spe...
Questions
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 11.02.2021 22:50
![question](/tpl/images/cats/mat.png)
Mathematics, 11.02.2021 22:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 11.02.2021 22:50
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 11.02.2021 22:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 11.02.2021 22:50
![question](/tpl/images/cats/fizika.png)
Physics, 11.02.2021 22:50
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/ap.png)
Advanced Placement (AP), 11.02.2021 22:50
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 11.02.2021 22:50
![question](/tpl/images/cats/mat.png)
Mathematics, 11.02.2021 22:50
![question](/tpl/images/cats/mat.png)
Mathematics, 11.02.2021 22:50
![question](/tpl/images/cats/mat.png)
Mathematics, 11.02.2021 22:50