A company is studying the use of a compound as a potential antifreeze. When 0.243 g of the compound is dissolved in 25.0 g of water, the freezing point of the solution is -0.201 * Celsius. a...
A company is studying the use of a compound as a potential antifreeze. When 0.243 g of the compound is dissolved in 25.0 g of water, the freezing point of the solution is -0.201 * Celsius. a...
0.02 M CuSO4 Can you check my work? Since CuSO4 is a m + nm, it is an ionic compound and will break up into ions in a polar? solution. (0.02 mol CuSO4 / 1.0 L...
Question #1 A 1335 mL sample of oxygen (O2) was collected by displacement of water at 24 degrees celsius under a total barometric pressure of 425 torr. What mass of dry oxygen was collected? The...
what is the specific (can be one simple sentence) definition of "delocalized electrons?" my chemistry book does not have the definition, and the phrase is not in the index and I need to...
Chemical Kinetics
At 134 degrees celsius, the pressure of a sample of nitrogen is 1.15 atm. What will the pressure be at 243 degrees celsius, assuming constant volume?
I know the molecular weight of sucrose is 342 g/mol
Need help.
Need help
Need help.
This question seems really hard for me I really don't get it my teacher explained it and I don't really know what it means..
Calculate the concentration of a crystal violet solution prepared by diluting 4.0 mL of 1.0 x 10^-4 M crystal violet with 2.0 mL of 0.100 M NaOH and 4.0 mL of distilled water. I...
Calculate the amount of heat needed to melt 145.g of ice (H2O) and bring it to a temperature of 42.8°C Round your answer to 3 significant digits. Also, be sure your answer...
Starting with solid sodium chloride, how would you make one liter of 2.000 ppm (parts per million) sodium chloride solution? tip: 1 ppm = 1 g solute/10^6 g solution , for dilute aq...
This is copied and pasted from my homework. But 953 moles seems insane to me. I've tried this problem and can't get it right. Please help!
I need help on Chem homework
I need help on this question. Confused
At 336 mL air sample collected at 36 degrees celsius has a pressure of 519 torr. What pressure will the air exert if it is allowed to expand to 498 mL at 59 degrees celsius?
A sample of gas at 45 degrees celsius and 1.82 atm occupies a volume of 2.29 L. What volume would this gas occupy at 193 degrees celsius and 0.817 atm?
The volume of a gas is 23.6 mL at 21 degrees celsius and 0.855 atm. What will the volume be at 12 degrees celsius and 0.998 atm?