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What is the relative formula mass of potassium carbonate?
The relative formula mass of potassium carbonate (K2CO3) is 138.21 g/mol. This value is calculated by adding the atomic masses of each element in the compound: potassium (K) has a molar mass of 39.10 g/mol, carbon (C) has a molar mass of 12.01 g/mol, and oxygen (O) has a molar mass of 16.00 g/mol.
Why is the mass of copper carbonate lower after heating?
Heating copper carbonate causes it to decompose into copper oxide, carbon dioxide, and oxygen. When the carbon dioxide gas escapes, the overall mass of the compound decreases, resulting in a lower mass of copper carbonate after heating.
How many grams of potasium carbonate are in 1.5 moles of this substance?
1,5 moles of potassium carbonate have 276,41 g.
What mass of carbon dioxide is formed when 125g of zinc carbonate decomposes?
The chemical equation for the decomposition of zinc carbonate is ZnCO3 → ZnO + CO2. From the equation, we see that 1 mole of zinc carbonate produces 1 mole of carbon dioxide. Zinc carbonate has a molar mass of 125.4 g/mol and carbon dioxide has a molar mass of 44.01 g/mol. By using stoichiometry, we can calculate that 125g of zinc carbonate produces 44.01g of carbon dioxide.
Mixture was found to contain 1.05g of SiO2 0.69g of cellulose 1.82g of calcium carbonate. Calculate the percentage of calcium carbonate in the mixture x. Note round your answer to 2 significant figure?
To calculate the percentage of calcium carbonate in the mixture, first find the total mass of the mixture by summing the individual masses given (1.05g + 0.69g + 1.82g = 3.56g). Then, calculate the percentage of calcium carbonate by dividing the mass of calcium carbonate by the total mass and multiplying by 100 (1.82g / 3.56g * 100 ≈ 51%). So, the percentage of calcium carbonate in the mixture is approximately 51%.
What is the relative formula mass of potassium carbonate?
The relative formula mass of potassium carbonate (K2CO3) is 138.21 g/mol. This value is calculated by adding the atomic masses of each element in the compound: potassium (K) has a molar mass of 39.10 g/mol, carbon (C) has a molar mass of 12.01 g/mol, and oxygen (O) has a molar mass of 16.00 g/mol.
Why is the mass of copper carbonate lower after heating?
Heating copper carbonate causes it to decompose into copper oxide, carbon dioxide, and oxygen. When the carbon dioxide gas escapes, the overall mass of the compound decreases, resulting in a lower mass of copper carbonate after heating.
What is the mass number of carbonate?
12 12.01
How many grams of potasium carbonate are in 1.5 moles of this substance?
1,5 moles of potassium carbonate have 276,41 g.
What is the percentage by mass of sodium (Na) in a formula unit of sodium hydrogen carbonate NaHCO3?
The percentage by mass of sodium (Na) in a formula unit of sodium hydrogen carbonate (NaHCO3) is 27,38 %.
What mass of carbon dioxide is formed when 125g of zinc carbonate decomposes?
The chemical equation for the decomposition of zinc carbonate is ZnCO3 → ZnO + CO2. From the equation, we see that 1 mole of zinc carbonate produces 1 mole of carbon dioxide. Zinc carbonate has a molar mass of 125.4 g/mol and carbon dioxide has a molar mass of 44.01 g/mol. By using stoichiometry, we can calculate that 125g of zinc carbonate produces 44.01g of carbon dioxide.
A mixture of KCl and KNO3 is 44.20 percent potassium by mass the percentage of kcl in the mixture is?
To find the percentage of KCl in the mixture, we first need to determine the percentage of potassium coming from KCl. Since the mixture is 44.20% potassium by mass and KCl is 74.55% potassium by mass, we can set up a simple ratio to find the percentage of KCl in the mixture as (74.55% / 100%) * 44.20% = 32.97%. Therefore, the percentage of KCl in the mixture is approximately 32.97%.
Mixture was found to contain 1.05g of SiO2 0.69g of cellulose 1.82g of calcium carbonate. Calculate the percentage of calcium carbonate in the mixture x. Note round your answer to 2 significant figure?
To calculate the percentage of calcium carbonate in the mixture, first find the total mass of the mixture by summing the individual masses given (1.05g + 0.69g + 1.82g = 3.56g). Then, calculate the percentage of calcium carbonate by dividing the mass of calcium carbonate by the total mass and multiplying by 100 (1.82g / 3.56g * 100 ≈ 51%). So, the percentage of calcium carbonate in the mixture is approximately 51%.
When 20g of calcium carbonate are decomposed by heating 8.8g of carbon dioxide are given off. Work out the mass of calcium carbonate that would be required to give 22g of carbon dioxide.?
Using stoichiometry, we can calculate the molar ratio between calcium carbonate and carbon dioxide. When 20g of calcium carbonate decompose to form 8.8g of carbon dioxide, the molar ratio is 1:1. Therefore, to produce 22g of carbon dioxide, you would need the same mass of calcium carbonate, which is 20g.
What is the percentage of iodine in potassium iodide?
The percentage of iodine in potassium iodide can be calculated using the formula: (molar mass of iodine / molar mass of potassium iodide) x 100. The molar mass of iodine is approximately 126.9 g/mol, and the molar mass of potassium iodide is approximately 166 g/mol. Therefore, the percentage of iodine in potassium iodide is (126.9 / 166) x 100 = 76.5%.
How many molecules are present in 691 grams of potassium carbonate?
30.115*10^23 molecules
A 20.0 g sample of sucrose contains 8.4 g of carbon what is the mass percentage of carbon sucrose?
The mass percentage of carbon in sucrose can be calculated by dividing the mass of carbon by the total mass of sucrose and then multiplying by 100. In this case, the mass percentage of carbon in sucrose would be (8.4 g / 20.0 g) x 100 = 42%.
