![subject](/tpl/images/cats/himiya.png)
1. what is the colour of feso4.7h20 crystals? how does this colour change upon heating? give balanced
chemical equation for the changes.
2. a. what are redox reactions?
b. why is the reaction between mno2 and hcl a
redox reaction?
c. identify the substance oxidized and the
substance reduced in the above reaction.
3. balance the chemical equation: -
fe(s) + h2o(g)=fe3o4(s) + h2(g)
4. explain why:
a)respiration is an exothermic reaction.
b)all decomposition reactions are endothermic
reactions.
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Other questions on the subject: Chemistry
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 00:30, megaaan214p61pb7
Which compounds have the empirical formula ch2o? a. c2h4o2 b. c3h6o3 c. ch2o2 d. c5h10o5 e. c6h12o6
Answers: 3
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 05:40, Maryjasmine8001
Salicylic acid is a very important acid. it is used to synthesize the aspirin by treating with acetic anhydride. a 0.2015-g sample of salicylic acid was dissolved in a 100.00-ml volumetric flask, and the solution was diluted to the mark. a 10-ml aliquot of this solution was titrated with standard naoh (0.01130 + 0.2% n) to a phenolphthalein faint pink color end point at 19.81 ml. (a) (calculate the normality of the salicylic acid solution used in the titration. (b) assuming the salicylic acid is pure, what is the equivalent weight of the salicylic acid? practice problems for the final exam (continued) (c) (calculate the inherent error in the determination of the equivalent weight you calculated in part (b). use the following absolute errors in the equipment /glassware when calculating the inherent error. 5.00-ml pipet: + 0.02 ml 100-ml volumetric flask: + 0.08 ml analytical balance: + 0.2 mg 25-ml buret: + 0.03 ml
Answers: 2
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 10:40, rntaran2002
What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0
Answers: 2
You know the right answer?
1. what is the colour of feso4.7h20 crystals? how does this colour change upon heating? give balanc...
Questions in other subjects:
![Konu](/tpl/images/cats/ap.png)
Advanced Placement (AP), 07.01.2021 01:00
![Konu](/tpl/images/cats/himiya.png)
Chemistry, 07.01.2021 01:00
![Konu](/tpl/images/cats/biologiya.png)
![Konu](/tpl/images/cats/en.png)
English, 07.01.2021 01:00
![Konu](/tpl/images/cats/ap.png)
Advanced Placement (AP), 07.01.2021 01:00
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/informatica.png)
Computers and Technology, 07.01.2021 01:00
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/informatica.png)
Computers and Technology, 07.01.2021 01:00