You pour a spoonful of salt into a glass of water. Explain what happens to the mass of the salt and the mass of the water.
Answers
Answer:
If you pour a spoonful of salt into a glass of water, the sodium will react with the water and increase the mass.
Explanation:
Final answer:
Pouring a spoonful of salt into a glass of water results in the dissolving of salt in the water. The mass of salt and water remains the same according to the law of conservation of mass. The salt breaks up into its individual ions but the total mass does not change.
Explanation:
When you pour a spoonful of salt into a glass of water, the salt dissolves in the water. The mass of the salt and the mass of the water remain the same. This is because of the law of conservation of mass which states that mass is neither created nor destroyed in a chemical reaction. In this case, the salt is breaking apart into its individual ions but its total mass is not changing. Similarly, the water molecules are staying the same, they are just moving around the salt ions.
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Answers
Answer:
Considering the reaction stoichiometry and the definition of limiting reagent, the mass of AlCl₃ that is produced when 10.0 grams of Al₂O₃ react with 10.0 grams of HCl is 12.19 grams.
Explanation:
Al₂O₃ + 6 HCl → 2 AlCl₃ + 3 H₂O
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
Al₂O₃: 1 mole
HCl: 6 moles
AlCl₃: 2 moles
H₂O: 3 moles
The molar mass of the compounds present in the reaction is:
Al₂O₃: 102 g/mole
HCl: 36.45 g/mole
AlCl₃: 133.35 g/mole
H₂O: 18 g/mole
Then, by reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of mass of each compound participate in the reaction:
Al₂O₃: 1 mole× 102 g/mole= 102 grams
HCl: 6 moles× 36.45 g/mole= 218.7 grams
AlCl₃: 2 moles× 133.35 g/mole= 266.7 grams
H₂O: 3 moles× 18 g/mole= 54 grams
The limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.
To determine the limiting reagent, it is possible to use a simple rule of three as follows: if by stoichiometry 102 grams of Al₂O₃ reacts with 218.7 grams of HCl, 10 grams of Al₂O₃ reacts with how much moles of HCl?
mass of HCl= 21.44 grams
But 21.44 grams of HCl are not available, 10 grams are available. Since you have less moles than you need to react with 10 grams of Al₂O₃ , HCl will be the limiting reagent.
Then, it is possible to determine the mass of AlCl₃ produced by another rule of three: if by stoichiometry 218.7 grams of HCl produce 266.7 grams of AlCl₃, if 10 grams of HCl react how much mass of AlCl₃ will be formed?
mass of AlCl₃= 12.19 grams
In summary, the mass of AlCl₃ that is produced when 10.0 grams of Al₂O₃ react with 10.0 grams of HCl is 12.19 grams.
Answers
Answer: The volume of liquid used will be 18.055 mL.
Explanation:
To calculate the volume of liquid, we use the equation for density which is:
We are given:
Mass of the liquid = 26 g
Density of the liquid = 1.44 g/mL
Volume of the liquid = ? mL
Putting values in above equation, we get:
Hence, the volume of liquid used will be 18.055 mL.
Mass = 26.0g
Density = 1.44g/mL
Therefore Volume = Mass/Density
=> Volume = 26.0/1.44 = 18.055... = 18.1mL (to 3 sig figs)
Answers
Answer: Acid rain is caused by a chemical reaction that begins when compounds such as sulphur dioxide and oxides of nitrogen are released into the air. These substances can rise very high up into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants called acid rain.
Explanation:
manslaughter
murder
assult
Answers
An article I just read said and I quote " a significant proportion of offenders and victims of sexual assault have consumed alcohol and alcohol increases the risk of sexual assualt, as victims become less able to detect dangerous situations. SO I would say the answer to you problem would be assault is sexual assualt is included in the answer.
Answer:
assault
Explanassaultation:
(2) higher boiling point and a lower freezing point
(3) lower boiling point and a higher freezing point
(4) lower boiling point and a lower freezing point