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The final pressure, temperature, and volume of a gas sample is 2.0 atm, 25 °C, and 515 mL, respectively. What is the original volume of the gas if the original temperature and pressure were standard temperature and pressure (STP)?
Some acids such as hydrochloric acid are described as strong acids. Some acids such as ethanoic acid are described as weak acids.
(a) (i) Explain the difference between a strong acid and a weak acid.
Get a number n from a user. Generate n random numbers and store in the list. Display the list. Compute summation and average of all numbers in the list then display the result on screen.
1. The speed of the bullet (m = 50g) and the speed of an electron ( m = 9.1 * 10-28g) are measured to be the same, namely 300 m/s, with an uncertainty of 0.01%. With what fundamental accuracy could we have located the position of each, if the position is measured simultaneously with the speed in the same expt.?
1. A small object of mass 1 mg is confined to move between two rigid walls separated by 2 cm. (a) Calculate the minimum speed of the object. (b) If the speed of the object is 4 cm/s, find the corresponding value of ‘n’.
Calculate the uncertainty in wavelength of a light emitted when an atom undergoes transition from an excited state that lasts for 10-3 second.
4. The Litsemba Life Insurance company computes annual policy premiums based on the age the customer turns in the calendar year. The premium is computed by taking the decade of the customer's age, adding 15 to it, and multiplying by 20. Write a Java application that prompts the user for the current year and birth year. Pass both to method that calculates and returns the premium amount and display the returned amount. Application should be saved as Insurance.java . Note: the customer age should not be more than 59 years. [10 Marks]
Jo Ann and her lab partner are completing a free fall lab in physics. Her partner drops the ball in front of the motion sensor to measure its speed. Assuming acceleration is constant and air resistance is negligible, how far does the object fall if it reaches a speed of 9.8 m/s?
0g of aluminum reacts with 18.0 grams of chlorine gas to produce aluminum chloride. Which reactant is limiting, which is in excess? Balanced Equation: 2 Al + 3 Cl2 -> 2 AlCl3
Og of aluminum reacts with 18.o gas of chlorine gas to produce aluminum chloride which reactant is limiting which is in excess? balanced equation Al+3Cl2 2AlCl3
#340153 on Dec 2023