1.15 g of a solid, pure substance is found to contain 0.774 g of carbon. How many grams of carbon will be in a 4.87 g sample of the solid?
1.15 g of a solid, pure substance is found to contain 0.774 g of carbon. How...
A solid sample (Sample 1) is analyzed and found to contain 1.47 g carbon and 0.123 g hydrogen. A second sample (Sample 2) is expected to be composed of the same pure compound. If Sample 2 is found to contain 2.17 g hydrogen, how much carbon is expected in the sample ?
10. A sample weighing 106.7 grams is analyzed and found to contain 42.97 g of potassium, 28.57 g of chromium; the remainder is oxygen. What is the empirical, or simplest, formula of this substance? 1027 11·An organic compound is analyzed and found to be 38.71 % carbon and 9.68 % hydrogen; the rest is oxygen. If the molecular weight of this substance is 62 g/mol, what is the molecular formula of this substance? 12. A sample weighing 112.2 grams is...
A sample is found to contain 0.500 mole of a chemical substance. a. How many atoms are present if the substance is the element Cu? 6-7 b. How many atoms are present if the substance is the element Na? c.How many molecules are present if the substance is the compound CO;? d.How many molecules are present if the substance is the compound SiF?
a) How many atoms are in 92.2 g of pure aluminum? b) How many grams of carbon, C, would contain the same number of atoms as 39.948 g of argon, Ar? c) How many grams of S are in 785 g of SO2?
Typing The Answer Is Mandatory The half-life of carbon is 5700 years. A substance was found that originally contained 40 grams of carbon-14. It now contains 10 grams of carbon-14. Predict how old the substance is. Explain how you arrived at this prediction.
A compound is isolated from the rind of lemons that is found to be 88.14% carbon and 11.86% hydrogen by mass. How many grams of C and H are there in a 200.0 g sample of this substance? Express your answers using one decimal place separated by a comma. What is the empirical formula?
How many carbon atoms are found in a 5.0 g sample of caffeine (C8H10N4O2)?
A compound is found to contain 2.4g of carbon, 2.14 g of oxygen and 0.470 g of hydrogen. If its molecular weight is 150g/mole, what is its molecular formula?
G AND FACT ORING ethod ial is factorable How many grams of carbon dioxide are found in 1.48 moles a. .50 g 9.. c. 60g d. 65g b. .55g Iu following is the correct order for production of the g
A solution was found to contain 5.21% copper (II) sulfate. How many grams of solution would contain 25.0 g of copper (II) sulfate?