What mass of nacl must be dissolved
What mass of NaCl must be dissolved in 65.0 grams of water to lower the freezing point by 7.50 °C? The freezing point depression constant, Kfp, for water is -1.86 °C/m. Assume the van't Hoff factor for NaCl is 1.87.
Expected delivery within 24 Hours
A 93 gram solution of silver nitrate contains 16 grams of AgNO3. What is the percent by mass of silver nitrate in this solution?
What is the specific heat of a metal if the temperature of a 12.5-g sample increases from 19.5 degrees C to 33.6 degrees C when it absorbs 37.7 J of heat?
Calculate the molarity of acetic acid in a viegar sample, knowing that 5.00 mL of vinegar requires 43.50 mL of 0.105 M NaOH to jut reach the phenolphthalein endpoint in a titration.
Suppose you have 10 ml of 0.10m sucrose solution. you add 90 ml of water to the solution. Do the number of sucrose change? Does the molarity change?
Rather than weigh the sample on a balance, a chemist chooses to dispense the liquid using a graduated cylinder. What volume of the liquid should he use?
A tank with a total pressure of 4.7 atm has a mixture of gases that is 72% nitrogen, and the rest is oxygen. What is the partial pressure of the nitrogen? The oxygen?
By how much would the pH change, and in which direction, if we added to this solution enough base to neutralize 10% of the total acid?
Calculate the value of deta S when 1.20 mol CH3OH (l) of is vaporized at 64.7 C. The normal boiling point of methanol is 64.7 C, and its molar enthalpy of vaporization is delta H = 71.8 KJ/mol.
1959713
Questions Asked
3,689
Active Tutors
1439188
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
This study examined the relationship between employment status, obesity, and blood pressure concerning the occurrence of heart attacks
Create paragraph: This analysis explored the association of employment status, obesity, and blood pressure with heart attack incidence
Diagnostic evaluation of Alzheimer's disease includes cognitive assessments such as the Mini-Mental State Examination (MMSE) and Montreal Cognitive Assessment
Lengthen: The stacked bar chart illustrates the incidence of heart attacks based on blood pressure (BP) status, with two categories:
Problem: Research and find 3 children's toys/manipulatives in each category of development: Need Assignment Help?
This assignment will focus on the following course student learning outcomes (CSLO): Evaluate the concepts of cellular biology and altered cellular and tissue