Concentrated nitric acid used in laboratory is 68 % nitric acid by mass in aqueous solution. What should be the molarity of such a sample of the acid if the density of the solution is 1.504 g mL-1?
Answers
Density = 1.504 g/mL⁻¹
Molar mass HNO₃ =63.01 g/mol
M = 1000 * T* D / mm
M = 1000 * 0.68 * 1.504 / 63.01
M = 1022.72 / 63.01
M = 16.23 mol/L
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Which type of pollution includes CFCs and smog?
What is igneous rock?
Which is a cause of polarity in water molecules? partial negative charge on the hydrogen atoms partial positive charge on the oxygen atom high electronegativity difference between oxygen and hydrogen low electronegativity difference between oxygen and hydrogen
Answers
Answer:
Learning Chemistry takes time! ...
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Explanation:
Chemistry requires both memorization and problem-solving, making it a particularly demanding subject. 5. Study two hours for each lecture hour and one hour for each lab hour each week (this is about 12 hours a week for 4 credit hour chemistry courses).
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B. Monomer
C. Polymer
D. Organic
Answers
Answer:
c
Explanation:
B. In a chemical change, a substance changes its phase
C. In a chemical change, the molecular structure of a substance changes
D. In a chemical change, one substance dissolves into another
Answers
Answer : The correct option is C.
Explanation :
Chemical change : It is defined as a change in which a new compounds are formed by the chemical reaction. Changes occurs in their chemical composition and properties.
The molecular structure of a substance changes in a chemical reaction is a chemical change.
- Change in molecular structure means that there is a breaking and formation of bonds in a molecule.
The example of chemical change in terms of change in molecular structure is the reaction of hydrogen with oxygen.
The reaction of hydrogen with oxygen is,
In this reaction, the H-H bond is break and O-H bond is form.
Answers
C6H12O6 + 6O2 → 6CO2 + 6H2O
Which compounds are the reactants and which are the products?
A.
reactants: C6H12O6 + 6O2
products: 6CO2 + 6H2O
B.
reactants: 6CO2 + 6H2O
products: C6H12O6 + 6O2
C.
reactants: 6CO2 + C6H12O6
products: 6H2O + 6O2
D.
reactants: 6H2O + 6O26CO2 + C6H12O6
products: 6CO2 + C6H12O6
Answers
Reactants on left (see on the arrow), products on right.
Final answer:
For the given chemical equation illustrating cellular respiration, the reactants comprise glucose (C6H12O6) and oxygen (6O2), and the products are carbon dioxide (6CO2) and water (6H2O). This symbolizes how in living cells, glucose and oxygen are transformed into energy, leading to the release of carbon dioxide and water as byproducts.
Explanation:
In the given chemical equation for cellular respiration, C6H12O6 (glucose) and 6O2 (oxygen) are the reactants and 6CO2 (carbon dioxide) and 6H2O (water) are the products.
This represents the process in living cells where glucose and oxygen are transformed into energy, releasing carbon dioxide and water as byproducts. Therefore, the correct answer is option A: Reactants are C6H12O6 + 6O2 and products are 6CO2 + 6H2O.
Learn more about Cellular Respiration here:
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Answers
Answer:
chromium atomic mass 52.00 atomic number is 24 period 4 group 6 6b
Explanation:
I checked the periodic table hope I helped