An alloy contains 59 g of pure silver and 17 g of pure copper. What is the percentage of silver in the alloy? Express your answer to two significant figures and include the appropriate units.
To find the percentage of silver in the alloy, we need to divide the mass of pure silver by the total mass of the alloy and multiply by 100%:
Percentage of silver = (mass of pure silver / total mass of alloy) * 100%
Mass of pure silver = 59 g
Mass of pure copper = 17 g
Total mass of alloy = Mass of pure silver + Mass of pure copper
Total mass of alloy = 59 g + 17 g
Total mass of alloy = 76 g
Percentage of silver = (59 g / 76 g) * 100%
Percentage of silver = 0.776 * 100%
Percentage of silver = 77.6%
Therefore, the percentage of silver in the alloy is 77.6%.
To find the percentage of silver in the alloy, we need to calculate the ratio of the mass of silver to the total mass of the alloy.
Step 1: Calculate the total mass of the alloy:
Total mass of the alloy = mass of silver + mass of copper
= 59 g + 17 g
= 76 g
Step 2: Calculate the percentage of silver:
Percentage of silver = (mass of silver / total mass of the alloy) * 100
= (59 g / 76 g) * 100
= 77.6 %
Therefore, the percentage of silver in the alloy is 77.6%.
To find the percentage of silver in the alloy, we need to divide the mass of silver by the total mass of the alloy, and then multiply by 100.
First, let's find the total mass of the alloy by adding the masses of silver and copper:
Total mass = mass of silver + mass of copper
Total mass = 59 g + 17 g
Total mass = 76 g
Next, let's find the percentage of silver:
Percentage of silver = (mass of silver / total mass) * 100
Percentage of silver = (59 g / 76 g) * 100
Percentage of silver ≈ 77.6%
Therefore, the percentage of silver in the alloy is approximately 77.6%.