![answer](/tpl/images/cats/otvet.png)
Answers: 3
Other questions on the subject: Chemistry
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 03:40, allyyzz
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
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 07:00, coolkid2041
Calculate the number of moles of ethane in 100 grams
Answers: 3
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 07:40, caleb19moody
21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8
Answers: 2
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 12:10, yootmytoot
Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution. calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.
Answers: 1
Do you know the correct answer?
Which best explains parallel forces...
Questions in other subjects:
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 15.10.2019 16:00
![Konu](/tpl/images/cats/mat.png)
Mathematics, 15.10.2019 16:00
![Konu](/tpl/images/cats/mat.png)
Mathematics, 15.10.2019 16:00
![Konu](/tpl/images/cats/istoriya.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 15.10.2019 16:00
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/biologiya.png)
Biology, 15.10.2019 16:00
![Konu](/tpl/images/cats/mat.png)