Since the metal sulfide is being converted to metal oxide, there is an increase in mass corresponding to the oxygen atoms gained. The difference in mass is due to the oxygen incorporated from the air, allowing us to find the molar mass of the metal by calculating the moles of oxygen gained and then determining the atomic mass of the metal.
The law of multiplication states that when elements combine to form more than one compound, the mass of one element that combines with a fixed mass of the other element is a simple ratio of small whole numbers. In this case, the data provided show that the ratio of the masses of metal in the two oxides (0.8g / 0.72g) is a simple ratio, demonstrating the law of multiplication in action.
ammonium carbonate
To find the molar mass of the metal (M), first, calculate the molar mass of the oxide. Since one gram of the oxide contains 2.9 grams of M and 1 gram of oxygen, the molar mass of the oxide is M + O = 2.9M + 16. Using the heat capacity, you can calculate the molar mass of the oxide, which in turn gives you the molar mass of the metal M.
To find the mass of 24.6 formula units of magnesium oxide, you first need to determine the molar mass of magnesium oxide (MgO), which is 40.3 g/mol. Then, multiply the molar mass by 24.6 to find the mass: 40.3 g/mol x 24.6 = approximately 992 grams.
The resulting mass is the same as the original mass, as the total mass during oxidation remains constant due to the conservation of mass principle.
When copper oxide is heated, it undergoes a chemical reaction that causes it to lose oxygen atoms, resulting in the formation of copper metal. The mass of the copper metal formed is equal to the mass of the original copper oxide. Therefore, the overall mass remains the same.
The molar mass of the metal can be found by taking the difference in mass before and after reduction. The difference in mass is 0.133 grams and the molar mass of the metal is determined to be 29 grams/mol, suggesting the metallic oxide is iron (III) oxide (Fe2O3).
Beryllium oxide has the highest percent by mass of oxygen among the listed alkaline earth metal oxides. It has a chemical formula of BeO, where beryllium has a +2 oxidation state, resulting in a total of 58.5% oxygen by mass in the compound.
To find the identity of the metal in the oxide, we need to determine the percent composition of the metal. Since the oxide contains 22.55% oxygen by mass, the metal must make up the remaining percentage of the compound. Subtracting 22.55 from 100 gives 77.45%, which indicates the metal makes up 77.45% of the compound by mass.
To show the law of multiple proportions, we can calculate the ratio of the masses of the higher oxide produced from the same mass of the metal in the lower oxide. For the lower oxide: 0.72g of lower oxide contains 20% non-metal, so the metal content is 80%. For the higher oxide produced: 0.72g of lower oxide gives 0.8g of higher oxide, which means the mass ratio is 1:1, consistent with the law of multiple proportions.
Since the metal sulfide is being converted to metal oxide, there is an increase in mass corresponding to the oxygen atoms gained. The difference in mass is due to the oxygen incorporated from the air, allowing us to find the molar mass of the metal by calculating the moles of oxygen gained and then determining the atomic mass of the metal.
The law of multiplication states that when elements combine to form more than one compound, the mass of one element that combines with a fixed mass of the other element is a simple ratio of small whole numbers. In this case, the data provided show that the ratio of the masses of metal in the two oxides (0.8g / 0.72g) is a simple ratio, demonstrating the law of multiplication in action.
ammonium carbonate
The mass of sodium oxide plus water would be the sum of the masses of sodium oxide and water individually. Sodium oxide has a molar mass of 62 g/mol and water has a molar mass of 18 g/mol. By knowing the amount of each substance, you can calculate the total mass.
The air surrounding said Mercury metal was absorbed into the mercury at the higher temperatures, therefore causing the new substance--mercuric oxide--to weigh more.
6g