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What each test reveals about an unknown halide ion? Suggest another test which would confirm that identity.
1. Addition of Cl2 and CH2Cl2 to an aqueous solution of an unknown halide ion led to a dark CH2Cl2 layer.
2. Addition of 0.1M AgNO3 to another sample of the same halide ion solution generated a light yellow precipitate.
3. Addition of concentrated NH3 to the same halide solution left a cloudy solution
4. Addition of acidic 0.1M NaNO2, 0.5M HNO3 and CH2Cl2 to a unknown halide ion solution resulted in a colorless CH2Cl2 layer
A laser pulse of light with a frequency of 1.14 × 1020 Hz contains 2000 photons. Calculate the energy in J of the pulse.
A corrosionist pipetted a 50.00 ml sample of an unknown brine and titrated it with 37.64 ml of 0.1024 M silver nitrate solution. Calculate the ppm of salt (NaCl)in the sample.
Calculate the work associated with the compression of a gas from 121.0 L to 80.0L at a constant pressure
The ballon ascends to and altitude where the pressure is 504 mmHg and temperature is -34degree celcius . What is the volume of the ballon at this altitude
What is the identity of the metal if 0.280 grams of the metal is plated out in the electrolysis? Show all calculations.
carbon dioxide escapes due to A leak , leaving only 3.5 moles of CO 2 inside the balloon. Determine the new volume of the balloon?
A mixture moistened with water and placed it in a desiccator (drying chamber) with silica gel to dry at 22C. the silica gel absorbed water vapor as the mixture dried.
Write the reaction of butanoic acid with propanethiol.
The inventor proposed the revolutionary design of the new engine based on the heat stored in the ocean. The inventor plan is to mount it on a boat in San Francisco and set off on a journey across the Pacific Ocean. Heat is extracted from the ocean
Given the unbalanced equation: Ag2CO3 ® Ag + O2 + CO2, how many moles of Ag can be produced from 2.5 moles of Ag2CO3.
A graduated cylinder contains 31.0 of water. What is the new water level after 38.0 of silver metal is submerged in the water?
What fraction of iodine -131 remains 32 days after a 12.0 gram dose was administered? The half life of iodine -131 is 8.0 days
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