menu
Qammunity.org
Login
Register
My account
Edit my Profile
Private messages
My favorites
Ask a Question
Questions
Unanswered
Tags
Categories
Ask a Question
Pennies used to be made of copper and zinc and had a mass of of 3.1 g. Today pennies are made of copper-platted zinc and have a mass of 2.5 g. A new penny's mass is what percent of an old penny's mass?
asked
Jul 16, 2019
198k
views
3
votes
Pennies used to be made of copper and zinc and had a mass of of 3.1 g. Today pennies are made of copper-platted zinc and have a mass of 2.5 g. A new penny's mass is what percent of an old penny's mass?
Chemistry
middle-school
Helena
asked
by
Helena
8.4k
points
answer
comment
share this
share
0 Comments
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
1
Answer
4
votes
A new penny’s mass is 80.64% of an old penny’s mass.
Gerges Eid
answered
Jul 19, 2019
by
Gerges Eid
7.7k
points
ask related question
comment
share this
0 Comments
Please
log in
or
register
to add a comment.
← Prev Question
Next Question →
Related questions
asked
Apr 27, 2024
69.7k
views
Speed limit in platted subdivisions?
Jan Paepke
asked
Apr 27, 2024
by
Jan Paepke
7.7k
points
Engineering
college
1
answer
5
votes
69.7k
views
asked
May 24, 2021
187k
views
The square root of 83 can be platted on the number line below
Shakle
asked
May 24, 2021
by
Shakle
8.6k
points
Mathematics
high-school
2
answers
5
votes
187k
views
asked
Apr 16, 2021
195k
views
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
Xetorthio
asked
Apr 16, 2021
by
Xetorthio
9.1k
points
Chemistry
college
1
answer
3
votes
195k
views
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.
9.4m
questions
12.2m
answers
Other Questions
Compare and contrast an electric generator and a battery??
How do you balance __H2SO4 + __B(OH)3 --> __B2(SO4)3 + __H2O
Can someone complete the chemical reactions, or write which one do not occur, and provide tehir types? *c2h4+h2o *c3h8 + hcl *c2h2+br2 *c4h10+br2 *c3h6+br2
As an object’s temperature increases, the ____________________ at which it radiates energy increases.
Why is gold preferred as a superior metal over silver and bronze?
Twitter
WhatsApp
Facebook
Reddit
LinkedIn
Email
Link Copied!
Copy
Search Qammunity.org