Why does vinegar make pennies turn green?

Why does vinegar make pennies turn green? When copper is exposed to oxygen, it forms molecules called copper oxide that make pennies look dirty. Pouring vinegar over the pennies helps break up this copper oxide and expose the pure copper on the penny. As the penny dries and is exposed to the air, a chemical […]

How are digital images manipulated?

How are digital images manipulated? Other examples of photo manipulation include retouching photographs using ink or paint, airbrushing, double exposure, piecing photos or negatives together in the darkroom, scratching instant films, or through the use of software-based manipulation tools applied to digital images. How do you edit digital photos? Here are the key steps for […]

What is the chemical name of perfume?

What is the chemical name of perfume? A perfume consists of 78 to 95 percent ethyl alcohol. Essential oils comprise the remaining ingredients. The staying power of a scent compound in a perfume depends on its rate of evaporation. Perfumes also have different classes of fragrance such as “floral,” “woody” or “citrus” notes. What are […]

How tall does a crocodile stand?

How tall does a crocodile stand? Species of the dwarf crocodile Osteolaemus grow to an adult size of just 1.5 to 1.9 m (4.9 to 6.2 ft), whereas the saltwater crocodile can grow to sizes over 7 m (23 ft) and weigh 1,000 kg (2,200 lb). Several other large species can reach over 5.2 m […]

Do seahorses have pouches?

Do seahorses have pouches? The male seahorse has a pouch on its stomach in which to carry babies—as many as 2,000 at a time. It ends with the female depositing her eggs in the male’s pouch. Why do male seahorses give birth and not females? One theory about why male seahorses carry the babies is […]

What frogs are extinct?

What frogs are extinct? Not extinct How does a platypus frog reproduce? Birth is accomplished by the female widely opening her mouth and dilating her esophagus. The offspring are propelled from the stomach to the mouth, and then hop away. The breeding season occurs during the spring and summer months. Which frog gives birth through […]

Which streaming service has the Simpsons?

Which streaming service has the Simpsons? Disney+ Does Hulu have all seasons of the Simpsons? Hulu just carries the current season. The FXX app is free and has Every Simpsons Ever on it. Is The Simpsons on Stan or Netflix? Sadly the series isn’t on Netflix, but US fans can watch every episode on FXNOW. […]

Why Patna get heavier rain than Delhi?

Why Patna get heavier rain than Delhi? Patna receives heavier rain than Delhi because Patna is on the eastern side as compared to Delhi and places situated on the eastern side receive more rainfall or heavier rainfall than the places situated on the western side of the country. Why does Patna receive more rainfall than […]

Begin typing your search term above and press enter to search. Press ESC to cancel.

Back To Top