Register
The atomic weight of an unknown element,in atomic mass units (amu),is approximately 20% less than that of calcium. The atomic weight of calcium is 40 amu. What is the approximate weight,in amu,of the unknown
54.7k views
0 votes
The atomic weight of an unknown element,in atomic mass units (amu),is approximately 20% less than that of calcium. The atomic weight of calcium is 40 amu. What is the approximate weight,in amu,of the unknown element?

User Eduardo Tolentino
by
7.6k points

1 Answer

3 votes
amu of unknown element = 40 - (20% * 40)
= 40 - 8
= 38 amu

therefore, the approximate weight of the unknown element is 38 amu.

hope this helps.
User Fawwaz Yusran
by
8.0k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.3m questions

12.0m answers

Other Questions

How do you can you solve this problem 37 + y = 87; y =
What is .725 as a fraction
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
Write words to match the expression. 24- ( 6+3)
A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the price of a chair, table, and of a desk.
Link Copied!