# Chemistry

Consider an alloy that is 13.4% copper by mass in tin. Copper makes up what percentage of the atoms in this sample?

1. 👍 0
2. 👎 0
3. 👁 92
1. 100% * [13.4 / (atomic mass Cu)] /
... {[13.4 / (atomic mass Cu)] + [(100 - 13.4) / (atomic mass Sn)]}

1. 👍 0
2. 👎 0
posted by R_scott

## Similar Questions

1. ### Math

There are two alloys consisting of zinc, copper and tin. The first alloy contains 25% zinc and the second alloy contains 50% copper. The percentage of tin in the first alloy is twice that in the second alloy. 200 kg of the first

asked by Tamasa on June 19, 2016
2. ### Chemistry

Consider an alloy that is 14.1% copper by mass in tin. Copper makes up what percentage of the atoms in this sample?

asked by Seth on February 12, 2017
3. ### math

Bronze is an alloy or mixture of the metals copper and tin. The properties of bronze depends on the percentage of copper in the mix. A chemist decides to study the properties of a given alloy of bronze as the proportion of copper

asked by pizza on January 28, 2015
4. ### Math (Word Problem into formula)

A chemist is studying the properties of a bronze alloy (mixture) of copper and tin. She begins with 6 kg of an alloy that is one sixth tin. Keeping the amount of copper constant, she adds small amounts of tin to the alloy. Letting

asked by Samantha on December 8, 2014
5. ### Algebra/Math

Can you show work por favor? :) A metalworker has a metal alloy that is 20% copper and another alloy that is 60% copper. How many kilograms of each alloy should be combined to create 80 kg of a 53% copper alloy?

asked by Anon on February 27, 2013
6. ### Algebra

solve linear equation-an alloy of metal is 25% copper. Another alloy is 50% copper. how much of each alloy should be used to make 1000 grams of an alloy that is 45% copper

asked by Melody on October 19, 2007
7. ### Geometry

An alloy of copper is 10% copper and weighs 25 pounds. A second alloy is 18% copper. How much (to the nearest tenth lb.) of the second alloy must be added to the first alloy to get a 13% mixture.

asked by Ivan on January 18, 2011
8. ### math

An alloy of copper is 10% copper and weighs 25 pounds. A second alloy is 18% copper. How much (to the nearest tenth lb.) of the second alloy must be added to the first alloy to get a 13% mixture.

asked by justin on April 6, 2014
9. ### chem

An experimental alloy contained by copper and tantalum. 3.7950 g of the alloy was dissolved and analyzed gravimetrically. The copper was precipitated and weighed as CuO, a mass of 0.1805 g was obtained. Calculate the %w/w Cu in

asked by lara on April 11, 2012
10. ### math

An alloy of metals is 25% copper. Another alloy is 50% copper. How much of each alloy should be used to make 1000 grams of an alloy that is 45% copper

asked by Danie; on September 19, 2010

More Similar Questions