hafsazunair hafsazunair

03-12-2020
Chemistry

contestada

can copper be scratched by a fingernail or blade knife. why?

Respuesta :

M7mdnja M7mdnja

03-12-2020

Answer:

it could by blade knife

Explanation:

fingernail has hardness 2.5; copper penny, about 3.5; a knife blade, 5.5

Answer Link

Otras preguntas

Which period was the “golden age of dinosaurs”? a. the Triassic Period b. the Jurassic Period c. the Cretaceous Period d. the Tyrannosaurus Period

The unstated purpose of the Alien and Sedition Acts was to (A) unite the nation in time of danger (B) deport immigrants who were becoming too numerous (C) prote

A circular pool is ten feet in diameter and ﬁve feet deep. What is its volume, in cubic feet?

What were some events/things that caused the Great Depression?

3x+y=4 2x+y=5 solve using linear combination

A flight instructor charges $50 per lesson, plus an additional fee for the use of his plane. The charge for the use of the plane varies directly with the square

A circular pool is ten feet in diameter and ﬁve feet deep. What is its volume, in cubic feet?

The significance of the Open Door Policy for the United States lay in its (A) providing a use for the Philippines as a way station between China and the United

How many miles can you get on one tank of gas if your tank holds 18 gallons and you get 22 miles per gallon?

3x+y=4 2x+y=5 solve using linear combination