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Hydrogen gas was cooled from 15 C to -15 C. Its new volume is 75.0mL. What was its original volume?
A sample of carbon dioxide gas occupies a volume of 3.50 l at 125 kpa and 273 K. What pressure in STP units would the gas exert if the volume was decreased to 2.00 liters at 273 K?
A 2.00 Liter container of nitrogen had a pressure of 3.20atm. What volume would it be 692 torr?
Oxygen gas is a temperature of 40 C when it occupies a pressure of 12.30 psi. To what temperature will it have at a pressure of 6.50 psi?
you are working as a freelancer. A company approached you and asked to create an algorithm for username validation. The company said that the username is string S .You have to determine of the username is valid according to the following rules.
1.The length of the username should be between 4 and 25 character (inclusive).
2.Valid username must start with a letter.
3 Valid username can only contain letters, numbers, and underscores characters.
4 Valid username cannot ends with the underscore character and also doesn't accept the special characters.
INPUT: The first line contains an integer T representing the number of test cases.
The first line of each test cases input contains a string.
OUTPUT: Each test case gives a Boolean value as output(true or false)
sample Input:
3
Google_123
google@123
sampleOutput
true
true
false
sample input 2
HelloPython
#Coder
CoderIt
sampleoutput 2
true
false
true
A sample of nitrogen occupies a volume of 250 mL at 25 C. What volume will it occupy at 0C?
Find the domain and range of these functions.
c) the function that assigns to a bit string the number of
times the block 11 appears
d) the function that assigns to a bit string the numerical
position of the first 1 in the string and that assigns the
value 0 to a bit string consisting of all 0s
What is the momentum of a vehicle if a force of 1000 N is applied on it in 0.50 seconds if it started from rest?
How long will it take to put a 4500 kg truck to rest from a velocity of 20.0 m/s if the force applied by the brakes is 5000N?
How much force is needed to put a 3000 kg vehicle to rest if initially moving at 16.67 m/s and if this force is to be applied on the vehicle for 30.0 seconds?
