jtkblue jtkblue

02-10-2020
Chemistry

contestada

QUICK AND EASY, NO COMPLICATED PROBLEM!

Pennies used to be made of copper and zinc and had a mass of 3.1g. Today, pennies are made of copper-plated zinc and have a mass of 2.5g. A new penny's mass is what percent of an old penny's mass?

Respuesta :

xcfgvhbjnkml xcfgvhbjnkml

02-10-2020

Answer:

81%

Explanation:

Answer Link

Otras preguntas

Rohit is taking a tuition class(passive voice)

Dan Barker, the chief engineer, told Ms. Silva that the company is currently making 150 units of Model Diamond per batch and 245 units of Model Gold per batch.

Software that functions as an electronic version of a filing cabinet?

9x-7=-52 Show all work and justify each step

Find p and q if, √3 −1 /√3 +1 = p + q√3

Show work, can someone help me out having trouble with this problem

CH3CH₂OH + 0₂ → CO₂ + H₂O

Validity of an experiment is based upon: A. Using a control group. B. Performing a fair test in which only the independent variable affects the dependent varia

Which values of x and y would make the following expression represent a real number? (4 +51)(x + yı) O x = 4, y = O x=-4, y = 0 Ox = 4, y = -5 O x = 0, y = 5

Find y please help !!!