Take two general chemistry quizzes (chapter 2 and 3), Introduction to MasteringChemistry and Chemistry Primer on Pearson website. Must to get A score
The substance neon has the following properties:normal melting point:24.5 Knormal boiling point:27.1 Ktriple point:0.425 atm, 24.4 Kcritical point:26.2 atm, 44.4 K A sample of neon at a pressure of 1.00 atm and a temperature of 52.8 K is cooled at constant pressure to a temperature of 18.3 K. Which of the following are true? Choose all that applyThe final state of the substance is a liquid. The solid initially present will vaporize. One or […]
Arrange the following elements in order of increasing electronegativity: calcium, arsenic, germanium, gallium smallest largest
The compound magnesium bromide is a strong electrolyte. Write the reaction when magnesium bromide is put into water
20 cm3of h2so4 reacts with 50cm3 of naoh from 1000cm 3 of a solution of naoh . the naoh solution was added 150cm 3 of water and its concentration became 1.12 mol/dm3 after adding to the remainder of naoh left . determine, with working , what was the concentration of HCl in mol/dm3 and g/cm3
Aspirin is well known as a pain reliever (analgesic) and as a fever reducer (antipyretic). It has a molar mass of 180.2 g/mol and a composition of C 60.0%, H 4.5% and O 35.5%. Calculate the molecular formula of aspirin.
What is the name of the compound with the formula MgF2 ? What is the name of the compound with the formula PCl3 ? What is the formula for phosphorus pentachloride ? What is the formula for chromium(II) nitrite ?
Corrosion No 5 1. Write the equations of selective corrosion of the alloy Cu/Zn in a neutral medium and in a medium of H3PO4. 2. Violation of the integrity of which coating on cobalt is shown in, figure: sacrificial or noble coating. This situation is possible with the contact of a pair of metals: Co/Al or Co/Ag. […]
Identify the product formed from the reaction of N bromosuccinimide with the following compounds. (a) p-tert Butyltoluene (b) 4-Methyl-3-nitroanisole
Write the answers to your questions with all work shown with proper units and significant figures. 1. Iodine pentafluoride gas reacts with iodine fluoride gas producing iodine heptafluoride gas and iodine gas. What is the maximum number of grams of iodine gas that can be produced from a reaction of 10.0 g of iodine pentafluoride with […]
