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Calculate the molar mass of the solute in a solution of 2.47g of a nonelectrolyte in 100 g of acetic acid (CH3COOH). The solution freezes at 1.3 °C below the normal freezing point of pure acetic acid. (Kf for CH3COOH = 61.8°C/m)
A 1.50 g sample of a compound containing only C,H and O was burned completely. The only combustion products were 1.738 g CO2 and 0.711 g of water. What is the empirical formula and molecular formula of the compound? (MW = 152g/mol)
A wooden object found in an Indian burial ground and subjected to radiocarbon dating. The decay rate associated with C- 14 is l0 disintegrations per minute per gram carbon. What is the age of the object?
What pressure is required to reduce 64 mL of a gas at standard conditions to 17 mL at a temperature of 29◦C? Answer in units of atm.
What are the freezing point and boiling point of a solution that contains 5 g of glycerol (C3H8O3) and 20 ml of water.
Assuming Raoult’s law applies, calculate the vapor pressure of a solution of 45 g of glucose (C6H12O6) in 95 g of water at 25 degrees Celsius
These two questions about anesthetizing a rabbit
1.How does the coagulation time of the test tube with heparin change? Why?
2. How does the coagulation time of the test tube with Lung tissue immersion liquid change
Find
lim [1/(2n+1)^2
+2/(2n+2)^2+3/(2n+3)^2+..3/25n] n→ ∞
Let X be a random variable that denotes the number of passengers in a train station for a given hour. What are the possible values of X?
Question #301749
Write a program to print W pattern of N lines using a asterisk(*) character
NOTE : There is a space after each asterisk (*) character.
Input:
The first line is an integer N
Explanation:
For N=5
The output should be
* * * * * * * * *
* * * * * * * *
* * * * * *
* * * *
* *
