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A mixture of unknown salts containing a sulfate salt has been weighed to be 1.50 g. After dissolving the solution in 500 mL of water, heating it, and adding hot barium chloride (40.0 mL, 0.500 M); the precipitate has been collected after succeeding digestion, and the mass was found to be 0.325 g. What is the percentage (by mass) of sulfur in the mixture?
According to Rev. John A. Ryan, is the living wage a primary or secondary natural right?
A manufacturer of light bulbs produces bulbs that last a mean of 950 hours with a standard deviation of 120hours .what is the probability that the mean lifetime of a random sample of 10 of these bulbs is less than 900 hours
A lottery will be conducted by the Grade 11 students of MNHS to help a fellow student who needs to undergo
an operation. Out of four hundred tickets to be sold, only one ticket will win ₱2,000 and the rest will win nothing.
If you will buy a ticket, calculate for your expected gain.
Sphere A, with a charge of +6.0 𝜇𝐶, is located near another charged sphere, B. Sphere B has a charge of −3.0 𝜇𝐶and is located 4.0 cm to the right of A.
What is the force of sphere B on sphere A?
A third sphere, C with a +1.5 𝜇𝐶charge, is added to the configuration. If it is located 3.0 cm directly beneath A, what is the new net force on sphere A?
Maintaining constant pressure, the volume of a gas is increased from 18.0 L to 32.0 L by heating it. If the original temperature was 18.0°C, what is the new temperature in degrees Kelvin? Reminder, convert your temperature to Kelvin before you begin the problem.
Find the potential at a distance of 0.07 m from a -6 nC charge
3. The amount of tea leaves in a can from a production line is normally distributed with μ = 110 grams and σ = 25 grams. A sample of 25 cans is to be selected. What is the probability that the sample mean will be between 100 and 120 grams?
2. At a computer manufacturing company, the actual size of a computer chip is normally distributed with a mean of 1 centimeter and a standard deviation of 0.1 centimeter. A random sample of 12 computer chips is taken. What is the probability that the sample mean will be between 0.99 and 1.01 centimeters?
The scores of all pro golfers for a course are normally distributed with the mean of 70 and a standard deviation of 3. Suppose 36 pro golfers played the course today. Find the probability that the mean score of the 36 pro golfers exceeded 71.
#339914 on Dec 2023