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Compare 1.0 mol/L sodium hydroxide with 1.0 mol/L ammonia (written as ammonium hydroxide) by recreating similar diagrams of dissociation and concentration as those provided to you for the acid comparison. Assume ammonia dissociates only 1%. What would you expect to see if you tested the conductivity and pH of each? Why is there a difference in reactivity if there is 1 mole of acid in a given litre?
Two is Greater Than One
by CodeChum Admin
They say that the one in first place is always greater than the one in the second and third place. Are they always right?
Instructions:
- Input three integers in different lines (one each line).
- Print out the integers in one line.
- If the 1st integer is greater than or equal to both the 2nd integer and the 3rd integer, print "Yes".
Input
Three lines containing an integer on each.
3
2
1Output
The first line contains all the three inputted integers.
The second line contains a string which is the result.
3·2·1
YesAre Integers Created Equally?
by CodeChum Admin
It's time to find out if something is true or false. Let's test your capabilities by creating a program that checks if two integers are equal!
Instructions:
- Input two integers in one line.
- Print the two integers in one line, separate them with a space.
- Print a string message on a new line, "Equal" if both integers are equal.
Input
A line containing two integers separated by a space.
5·5Output
The first line contains the two integers input.
The second line contains a string which is the result.
5·5
EqualThe mass of a beaker is 5.833 g. After 3.00 mL of a certain pure liquid, is added into the beaker, the combined mass of the beaker and the liquid sample is 8.613 g. From the data, what is the measured density of the liquid?
John used an empty beaker that has a mass of 43.126 g. In a separate jar, he had a mixture of salt and sand. He transferred two scoops of salt and sand mixture to the beaker. The overall mass was 55.449 g. As you know salt is soluble in water, he added enough water to the beaker with salt and sand mixture to completely dissolve the salt. He filtered the mixture and dried what was left in the filter. The mass of that residue was 8.200 g. Based on the experiment calculate:
1. The mass of salt: _____
2. The mass of sand: _____
3. The mass of the mixture (salt + sand): _____
You have 1 m3 of wood and 1 m3 of aluminum. Which is heavier? Prove your answer with calculation.
Suppose the price of good x rises by 13% leading to a 11% increase in the demand for good y. Calculate the cross elasticity of demand between goods x and y and determine whether they are substitutes or complements.
If A= 5i + 3j
B= 3i + 7j
C= 2i - 3j
Find A × B × C
Approximately 100 g of PbCl4 reacted excess NH4Cl according to the following equation: PbCl4 + 2 NH4Cl → (NH4)2PbCl6. If the yield was 87.0%, how many grams of product were obtained?
please include calculations
A random variable, Z, which has mean 0 and standard deviation 1, find (1) p(z>1.2) (2) p(-2.0<z<2.0) (3) p(-1.2<z<1.0)
