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What is the molarity of 0.650L of solution containing 63g of Nacl
A solution of salt water raised the boiling point of water from 100°C to 102.5°C. What is the molality of the solution? Assume the kb of water is 0.51°C/m.
Camphor (C10H16O) has a molal freezing point depression constant of 5.95°C/m. If you dissolve 10.0 g of dimethyl ether (C2H6O) into 3.00 kg of camphor, what will be the change in the freezing point of camphor?
Name the following alkane. Show / explain how you name it.
Ch3—Ch—ch3 | Ch3—ch—ch2— l Ch3
Calculate the boiling point of a solution made from 227 g of MgCl2 dissolved in 700. g of water. What is the boiling point of the solution? Kb = 0.512° C/m.
Calculate the freezing point of a solution made from 32.7 g of propane, C3H8, dissolved in 137.0 g of benzene, C6H6. The freezing point of benzene is 5.50°C and its Kf is 5.12°C/m.
Find the order of decreasing acid strength between CH3CF2COOH, CH3CHClCOOH, CH2ClCH2COOH, and CH3CH2COOH
Choose one chemical that humans add to water that is not present in lake water. Explain its purpose.
The Ministry of Natural Resources has sent you to sample two small lakes that are being considered sites for a fish farm. Below is the data you obtained during your sampling. Compare the sites and provide your recommendation for the best site. Provide your reasoning.
SITE A
Nitrate - 5pm
Phosphate - 3ppm
Dissolved O2 - 5.0ppm
pH - 6.8
SITE B
Nitrate - 1pm
Phosphate - 1ppm
Dissolved O2 - 9ppm
pH - 8.0
you are asked to identify two clear, colourless beakers full of solution as acidic or basic. State what you would expect to see if beaker A was an acid and beaker B was a base for each of the following properties:
BEAKER A vs BEAKER B
- Conductivity
- pH
- Bromothymol blue
- Reaction with zinc
- Taste
