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Q ⊂ R+
a. true
b. false
Let A = {a, b, {b}, {b, e}, e} and B = {b, {b, e}, e, f}.
A ⋂ B = {b, {b, e}, e}
a. false
b. true
Some people think there is no gravity on the moon. Are they correct? explain why
1) Many chemical processes release waste products into the atmosphere. Scientists are developing new solid catalysts to convert more efficiently these emissions into useful products, such as fuels. One example is a catalyst to convert these emissions into methanol. The catalyst is thought to work by breaking a H–H bond.
An equation for this formation of methanol is given below.
CO2(g) + 3H2(g) CH3OH(g) + H2O(g) ∆H = −49 kJ mol−1
(a) Use the enthalpy change for the reaction and data on bond entahlpies to calculate a value for the C=O bond enthalpy.
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1. A researcher estimates that the average height of the buildings of 30 or more
stories in a large city is at least 700 feet. A random sample of 10 buildings is
selected, and the heights in feet are shown. At = 0.025, is there enough
evidence to reject the claim?
485 511 841 725 615
520 535 635 616 582
1. A researcher estimates that the average height of the buildings of 30 or more stories in a large city is at least 700 feet. A random sample of 10 buildings is selected, and the heights in feet are shown. At = 0.025, is there enough evidence to reject the claim? 485 511 841 725 615 520 535 635 616 582
Admission Price - A particular zoo determines the price of admission based on the age of the guest. Guests 2 years of age and less are admitted without charge. Children between 3 and 12 years of age cost P140.00. Seniors aged 65 years and over cost P180.00. Admission for all other guests is P230.00. Create a program that begins by reading the ages of all of the guests in a group from the user, with one age entered on each line. The user will enter a blank line to indicate that there are no more guests in the group. Then your program should display the admission cost for the group with an appropriate message. The cost should be displayed using two decimal places.
A weather balloon has a volume of 1750 L at 103 kPa. The balloon is released to the atmosphere. At the highest point above the ground, the pressure on the balloon is 35.0 kPa. What is the new volume of the balloon at this height?
In student's t-distribution, if the sample size is 25, what is the degree of freedom?
