Dolomite is an ore that contains, among other things, the element magnesium. If you obtained 1.50 x 102 grams of magnesium from an ore sample that initially weighed 429 grams, what is the mass percent of magnesium in the ore?Group of answer choices0.53%15.6%35.0%47.1%52.9% PreviousNext
Question
Dolomite is an ore that contains, among other things, the element magnesium. If you obtained 1.50 x 102 grams of magnesium from an ore sample that initially weighed 429 grams, what is the mass percent of magnesium in the ore?Group of answer choices0.53%15.6%35.0%47.1%52.9% PreviousNext
Solution
To calculate the mass percent of magnesium in the ore, you need to divide the mass of magnesium by the total mass of the ore, and then multiply the result by 100 to convert it to a percentage.
Here are the steps:
- Identify the mass of magnesium: 1.50 x 10^2 grams
- Identify the total mass of the ore: 429 grams
- Divide the mass of magnesium by the total mass of the ore: (1.50 x 10^2) / 429 = 0.34965
- Multiply the result by 100 to get the percentage: 0.34965 x 100 = 34.965%
So, the mass percent of magnesium in the ore is approximately 35.0%. Therefore, the correct answer is 35.0%.
Similar Questions
What is the percent composition of magnesium (Mg) in MgO?A.50%B.40%C.60%D.70%SUBMITarrow_backPREVIOUS
Calculate the percentage by mass of magnesium in magnesium sulfate, MgSO4.Ar Mg = 24.31Ar S = 32.07Ar O = 16.00
8 A student reacts 1 mol of magnesium powder in a sealed 0.030 m3 container of oxygen at apressure of 2.0 10 5 Pa and a temperature of 600 K. The magnesium reacts completely to formMgO.Which percentage of the oxygen will be used up?A 5.0% B 10% C 42% D 83%
An ore contains 7.8% aluminium. What mass of aluminium would there be in 50kg of the ore?
The teacher used 1.00 g of magnesium.Use the equation to calculate the maximum mass of magnesium oxide produced.Page 5Give your answer to three significant figures.Relative atomic masses (A r): O = 16; Mg = 24
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.