![subject](/tpl/images/cats/himiya.png)
![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 17:10
Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5ď°c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/gâdegree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 22:30
What is the value of the standard enthalpy of formation of an element in its most stable form?
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 23:00
Consider the reaction: 2al(s) + fe2o3(s) â al2o3(s) + 2fe(s) the δhf for fe2o3(s) = -824.3 kj/mole. the δhf for al2o3(s) = -1675.7 kj/mole. finish the equation. δhrxn = [(1)( kj/mole) + (2)( kj/mole)] - [(1)( kj/mole) + (2) ( kj/mole)]
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 11:00
Which of the following reactions is endothermic? h2(g) + ½ o2(g) h2o(g), h = -57.82 kcal ½n2(g) + o2(g) + 8.1 kcal no2(g) ½ n2(g) + 3/2 h2(g) nh3(g) + 11.0 kcal c(diamond) + o2(g) co2, h = -94.50 kcal
Answers: 2
You know the right answer?
When a liquid boils or evaporates to become a gas, the molecules separate into individual atoms.
O...
Questions
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/health.png)
Health, 04.07.2019 16:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 04.07.2019 16:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 04.07.2019 16:30
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
History, 04.07.2019 16:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/en.png)
English, 04.07.2019 16:30
![question](/tpl/images/cats/mat.png)
Mathematics, 04.07.2019 16:30
![question](/tpl/images/cats/istoriya.png)
History, 04.07.2019 16:30
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 04.07.2019 16:30
![question](/tpl/images/cats/himiya.png)
Chemistry, 04.07.2019 16:30
![question](/tpl/images/cats/istoriya.png)
History, 04.07.2019 16:30
![question](/tpl/images/cats/mkx.png)
![question](/tpl/images/cats/en.png)