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On the copper surface, as a result of reactions with oxygen, carbon dioxide and water from atmosphere, copper carbonate (CuCO3) is formed; of course this compound is not soluble in all liquids, it is impossible.
Copper carbonate can be removed with dilute acetic acid (vinegar), but not with water.
What else can I help you with?
Are weak acids liquids?
Some are, such as acetic acid. Other such as hydrocyanic acid are gases while others, such as citric acid are solids..
What is thebest method to separate paperclips from a mixture of salt and pennies?
One way to separate paperclips from a mixture of salt and pennies is to use a magnet. The paperclips will be attracted to the magnet and can be easily picked up, while the salt and pennies will remain unaffected. Alternatively, you could dissolve the mixture in water, as the paperclips will sink, while the salt will dissolve and the pennies will remain at the bottom.
Can you send liquids in the post?
It depends on the type of liquid and the mailing regulations of the country you are sending it from. Some liquids may be considered hazardous and cannot be sent via post, while others may require specific packaging and labeling requirements. It's best to check with your local postal service or courier company for specific guidelines before sending liquids through the mail.
Why solids have any number of free surfaces while liquids have only one upper free surfaces?
It is a characteristic of liquids and gases to assume the shapes of their containers while solids maintain their own shapes.
Why do some liquids mix and some do not?
Liquids mix when the intermolecular forces between molecules of different liquids are similar and can overcome any repulsive forces. Liquids that do not mix typically have different intermolecular forces, leading to limited interactions between molecules and preventing a homogeneous mixture.
Why do some liquids burn while others do not?
The chimicals in some liquids burn others do not.
Why does laundry detergent clean pennies?
Laundry detergent contains surfactants that break down oils and grease, causing dirt and debris to loosen from the surface of the pennies. The agitation while cleaning helps to physically remove the grime, leaving the pennies looking shiny and clean.
How would you graph which liquid cleans pennies best?
You can create a bar graph comparing the cleanliness of pennies after being cleaned with different liquids. The x-axis would represent the different liquids used for cleaning, while the y-axis would represent the cleanliness of the pennies (e.g., shine or lack of tarnish). Measurements or ratings can be assigned to each penny based on its cleanliness level with each liquid.
What happens when you combine vinegar and salt to clean pennies?
When vinegar and salt are combined to clean pennies, a chemical reaction occurs that removes the tarnish on the coins. The acidic vinegar breaks down the tarnish while the salt acts as a mild abrasive to help scrub away the debris. This process can restore the shine and luster of the pennies.
What should used to clean copper pennies?
A mixture of vinegar and salt can be used to clean copper pennies. Simply soak the coins in the solution for a few minutes, then gently rub them with a soft cloth to remove any remaining dirt or grime. Avoid using abrasive materials or harsh chemicals as they can damage the coins.
What juice cleans copper pennies best?
A mixture of vinegar and salt can effectively clean copper pennies. The acid in vinegar helps to dissolve the tarnish on the pennies, while the salt acts as a mild abrasive to help scrub away dirt and grime. Dip the pennies in the vinegar and salt solution, then rinse with water and dry thoroughly.
Are weak acids liquids?
Some are, such as acetic acid. Other such as hydrocyanic acid are gases while others, such as citric acid are solids..
Are the 1970s pennies different from the 1990s pennies?
Yes, in the 1970s pennies were made of 95% copper while in the 1990s they were made of about 97% zinc.
Do girls like guys that are clean shaved down there?
Some girls like guys that are clean shaved down there while others don't care.
Why do some pennies hold more water than others?
Some pennies may hold more water than others due to variations in surface tension caused by differences in cleanliness or wear on the penny's surface. A clean penny may have a lower surface tension and allow water to spread more easily across its surface, while a dirty or oxidized penny may have a higher surface tension, causing the water to bead up and be contained in a smaller area.
What state would the elements be in at 800 Celsius?
It depends which elements you are talking about. Some would exist as solids at this temperature while others would be gases or liquids.
Why does liquid and solids keep the same volume?
They don't. Some liquids expand when they become solid and others shrink, while some do maintain the same volume.
