What is the complete ionic equation for this reaction?2KOH(aq) + H2SO4(aq) → 2H20(1) + K2SO4(aq)
O A. 2K+ + OH + H2SO4 → OH + 2H+ + K2SO4
B. OH + 2H+ + 2H20()
C. 2KOH + H2SO4 → 2H20 + K2SO4
D. 2K+ + OH + 2H+ + SO42- → 2H20() + 2K+ + SO42-
SUBMIT
Answers
Answer:
The answer is "Option D".
Explanation:
The entire ionic equation for all the substances, which are ionic compounds but are available in an aquatic is represented in the form with ions in the full ionic equation.
In the Net ionic equation, it doesn't have the particulate matter throughout the net ionic equations throughout the equations.
In the Spectator ions, it doesn't participate in interactions mostly on reaction and the material hand. From both sides, the very same ions are present.
The evenly balanced chemical formula is,
It is the separate organic compound that full ion formula will match the choice D.
Final answer:
The complete ionic equation for the reaction is 2K+ + 2OH- + 2H+ + SO42- → 2H2O + 2K+ + SO42-.
Explanation:
The complete ionic equation for the reaction 2KOH(aq) + H2SO4(aq) → 2H20(l) + K2SO4(aq) is:
2K+ + 2 OH- + 2 H+ + SO42- → 2 H2O(l) + 2 K+ + SO42-
The equation is balanced in terms of mass and charge by adding spectator ions (K+ and SO42-). The net ionic equation can be obtained by eliminating the spectator ions, leaving only the species that undergo a chemical change.
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The emission spectrum of hydrogen shows discrete, bright, colored lines. Which characteristic of the Bohr model is best supported by this observation?
B. oxygen
C. ore
D. hydrogen
Answers
Answer;
- Oxygen
-Ancient cyanobacteria released oxygen, which assisted in creating the atmosphere as we know it today.
Explanation;
-The oxygen atmosphere that we depend on was generated by numerous cyanobacteria during the Archaean and Proterozoic Eras.
-Cyanobacteria are aquatic and photosynthetic, meaning they live in the water, and can manufacture their own food. During the process of photosynthesis, energy from sunlight is used together with carbon (iv) oxide and water to form organic molecules that serve as nutrients for the organisms and also oxygen gas is released to the atmosphere.
which assisted in creating the atmosphere as we know it today.
approximate molecular mass of this gas?
A 30 grams
B 40 grams
C 20 grams
D 48 grams
Answers
Answer:
30 grams
Explanation:
I got 40 wrong so I picked 30
Answer:
30 grams
Explanation:
I did the ck12
Answers
number of moles = 3.94 / 63.0 => 0.0625 moles
Volume = moles / molarity
V = 0.0625 / 1.50
V = 0.04166 L x 1000 = 41.66 mL
hope this helps!
Final answer:
To dissolve a 3.94g copper penny, we would need approximately 331 milliliters of 1.50 M HNO3, taking into consideration the stoichiometry of the copper-nitric acid reaction.
Explanation:
Stoichiometry is required to solve this chemistry problem. The balanced equation for the reaction between copper and nitric acid is: 3Cu(s) + 8HNO3(aq) → 2NO(g) + 3Cu(NO3)2(aq) + 4H2O(l)
From this, we can conclude that every mole of copper reacts with eight moles of nitric acid. The molecular weight of copper is approximately 63.546 g/mole, so the moles of copper in an old penny can be calculated by mass (3.94 g) divided by the molar mass (63.546 g/mol).
This calculation shows that there are approximately 0.062 moles of copper in a penny. Since we determined that eight moles of nitric acid are required to react with one mole of copper, eight times the moles of copper gives the moles of nitric acid required, which is 0.496 moles.
Since molarity (M) = moles/liters, we can find out the volume of 1.50 M HNO3 required by rearranging the formula to be Liters= moles/Molarity. So, 0.496 moles divided by 1.50 M gives roughly 0.331 liters, which can be converted to approximately 331 milliliters.
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b. nicotine
c. carbon dioxide
d. carbon monoxide
Answers
B is the correct answer, thankyou.
Answers
The temperature change indicates an increase in the average kinetic energy of the molecules in a sample is 15°C to 298 K. Thus option 1 is correct.
What is kinetic energy?
Kinetic energy is defined as a form of energy that an object or particle has by the reason of its movement.
It can also be defined as the measure of the work that an object does by virtue of its motion.
Average kinetic energy is defined as a product of half of the mass of each molecule and the square of RMS speed.
The kinetic energy id directly proportional to temperature, with increase in temperature kinetic energy increases.
Thus, the temperature change indicates an increase in the average kinetic energy of the molecules in a sample is 15°C to 298 K. Thus option 1 is correct.
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b) 24
c) 42
d) 10
Answers
The GPS or global positioning system is a satellite – based navigation system made up of a network of 24 satellites placed into orbit by the US Department of Defense. It was originally intended for military applications but later one, it made available for civilian use. It works in any weather conditions, anywhere in the world for 24 hours a day.