Chemistry, 05.06.2020 05:58 carlyfaith3375
PLEASE VERY IMPORTANT NEED THIS
All of the questions will refer to the unbalanced equation below in the image. Balance it, then answer all of the questions.
1. What is the correct value for coefficient (A)? 1, 2, 3 or 4
2. What is the correct value for coefficient (B)? 1, 2, 3 or 4
3. What is the correct value for coefficient (C)? 1, 2, 3 or 4
4. What is the correct value for coefficient (D)? 1, 2, 3 or 4
5. If there is enough energy and H2, then how many moles of Sn02 will react with 2 miles of H2 and produce 1 mole of Sn and 2 moles of H2O? How many moles of SnO2 does this balanced equation represent? 0.5, 1.0, 1.5 or 2.5
6. The reactants in this equation are _. SnO2 and Sn, Sn and H2O, SnO2 and H2 OR H2 and H2O
7. The products in this equation are _. SnO2 and Sn, Sn and H2O, SnO2 and H2 OR H2 and H2O
8. The reaction is _. Endothermic OR exothermic
Answers: 3
Chemistry, 21.06.2019 16:30
Select the correct answer from each drop-down menu. daniel and sanya are scientists. daniel is studying whether the increasing frequency of tropical storms is affecting coastal erosion. sanya is investigating whether the discharge from industrial plants has any impact on the ph concentration of freshwater swamps in the surrounding area. which fields of science are daniel’s and sanya’s studies most closely related to? daniel’s field of study is related to science, and sanya’s field of study is related to .
Answers: 3
Chemistry, 21.06.2019 20:50
Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread
Answers: 2
Chemistry, 21.06.2019 21:30
The density of an unknown gas at 98°c and 740 mmhg is 2.50 g/l. what is the molar mass of the gas with work showed?
Answers: 1
Chemistry, 21.06.2019 23:00
A100-watt light bulb radiates energy at a rate of 100 j/s. (the watt, a unit of power or energy over time, is defined as 1 j/s.) if all of the light emitted has a wavelength of 525 nm , how many photons are emitted per second?
Answers: 1
PLEASE VERY IMPORTANT NEED THIS
All of the questions will refer to the unbalanced equation below in...
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