A compound is known to be a lithium halide, LiX. If 5.00 g of the salt is dissolved in exactly 100.0 g of water, the solution freezes at -1.39°C. What is the chemical formula for the salt?
A compound is known to be a lithium halide, LiX. If 5.00 g of the salt...
A compound is known to be a potassium halide, KX. Ir 6.00 g of the salt is dissolved in exactly 100 g of water, the solution freezes t-1.34 "C. Identify the halide in this formula. Kip for H, O is -1.86 °C/m.
A salt contains only strontium and one of the halide ions. A 0.0910-g sample of the salt was dissolved in water, and an excess of sulfuric acid was added to form strontium sulfate (SrSO4), which was filtered, dried, and weighed. Its mass was found to be 0.133 g. What is the formula of the strontium halide? (Omit states-of-matter from your answer.)
23. Find the empirical formula of a compound that is 46.3% lithium and 53.7% oxygen ( 4 marks) 24. If 75 g of potassium hydroxide is dissolved in 200 g of water, what is the concentration of the solution expressed as mass/mass percent? (C4)
A salt contains only barium and one of the halide ions. A 0.158g sample of a salt was dissolved in water, and an excess of sulphuric acid was added to form barium sulphate, which was filtered, dried and weighed. Its mass was found to be 0.124g. What is the formula of the barium halide?
0.0800 g of a compound with the empirical formula C2H2N is dissolved in 10.00 g benzene. The resulting solution freezes at 5.24°C. Benzene freezes at 5.48°C and has a freezing point depression constant of K - 4.90"C/m. What is the molecular formula of the compound? CHEN CHONA CH N3 OCHEN O CHAN2
A 5.00-gram sample of a compound is dissolved in enough water to form 100.0 mL of solution. This solution has an osmotic pressure of 25 torr at 25
5.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have a molecular molar mass of 44./gmol, is burned completely in excess oxygen, and the mass of the products carefully measured: product mass carbon dioxide 15.00g water 8.19g Use this information to find the molecular formula of X
1) An aqueous solution containing 15.9 g of an unknown molecular (nonelectrolyte) compound in 103.0 g of water was found to have a freezing point of -1.5 ∘C. Calculate the molar mass of the unknown compound. b) Determine the required concentration (in percent by mass) for an aqueous ethylene glycol (C2H6O2) solution to have a boiling point of 109.3 ∘C. c) What mass of salt (NaCl) should you add to 1.90 L of water in an ice cream maker to...
A metal, M, of atomic mass 56 amu reacts with chlorine to form a salt that can be represented as MC.,. A boiling point elevation experiment is performed to determine the subscript x, and therefore, the formula of the salt. A 21.6 g sample of the salt is dissolved in 100.0 g of water and the boiling point of the solution is found to be 376 K. Find the formula of the salt. Assume complete dissociation of the salt in...
A metal, M, of atomic mass 56 amu reacts with chlorine to form a salt that can be represented as MCI, A boiling point elevation experiment is performed to determine the subscript I, and therefore, the formula of the salt. A 23.8 g sample of the salt is dissolved in 100.0 g of water and the boiling point of the solution is found to be 376 K. Find the formula of the salt. Assume complete dissociation of the salt in...