CSS and HTML multiple choice

Which of the following are true for vector images?

They have to be rasterized eventually.

They are good for photorealism.

They are good for drawing shapes and logos.

They are stored inefficiently.

They are resolution independent.

They are effectively bitmaps.

They are stored efficiently.

The following table provides some information on carbon dioxide solubility in water.

Part A

What is the Henry's law constant for CO2 at 20∘C?

Express your answer in mol L−1 bar−1 to four decimal places.

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Part B

What pressure is required to achieve a CO2 concentration of 0.0980 mol L−1 at 20∘C?

Express your answer to three significant figures and include the appropriate units.

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Part C

At 1.01 bar, how many moles of CO2 are released by raising the temperature of 1 litre of water from 20∘C to 25∘C?

Express your answer to four decimal places and include the appropriate units.

During the past year, on the average, 289 books were checked out daily from the public library in Stucco, Wyoming. This year, the city fathers of Stucco have attempted to increase circulation through various promotions such as bookmobiles, youth programs, and visits to local organizations. In order to evaluate their efforts, they have taken a random sample of 50 days of the current year and calculated the mean number of books checked out daily --288-- and the standard deviation--23. Based on this data, it is likely (95% confidence level) that the daily circulation of books has not increased? Please show math step by step. how you would put it in a TI-84 calculator to arrive at your answer

The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket provides. Therefore, a transformer is plugged into the wall socket and produces the necessary voltage for charging the batteries. The batteries are rated at 9.0 V, and a current of 272 mA is used to charge them. The wall socket provides a voltage of 120 V.

(a) Determine the turns ratio of the transformer

(b) What is the current coming from the wall socket?
I_p =

(c) Find the average power delivered by the wall socket and the average power sent to the batteries.
P_p =
P_s =

Describe a situation in your everyday life where you could use the scientific method. List all the steps of the scientific method and explain how you would apply each of the steps in that situation.

Describe briefly what are the basic planning and design factors when applying “Escalator”?
Sketch the general layout and the main dimensions of an escalator inclined at an angle of 30o

1.A sample of 80 is drawn from a population with a proportion equal to 0.50. Determine the probability of observing between 33 and 50 successes.

2.For a population that is left skewed with a mean of 27 and a standard deviation equal to 16​, determine the probability of observing a sample mean of 25 or more from a sample of size 37.

3. For a normal population with a mean equal to 80 and a standard deviation equal to 11​, determine the probability of observing a sample mean of 87 or less from a sample of size 11.

2. Calculating the price elasticity of demand: A step-by-stepguide

Suppose that during the past year, the price of a laptop computer rose from $2,750 to $2,880. During the same time period, consumer sales decreased from 446,000 to 321,000 laptops.

Calculate the elasticity of demand between these two price–quantity combinations by using the following steps. After each step, complete the relevant part of the table with the appropriate answers. (Note: For decreases in price or quantity, enter values in the Change column with a minus sign.)

Step 1: Fill in the appropriate values for original quantity, new quantity, original price, and new price.

Step 2: Calculate the average quantity by adding the original quantity and the new quantity, and then dividing by two. Do the same for the average price.

Step 3: Calculate the change in quantity by subtracting the original quantity from the new quantity. Do the same for the change in price.

Step 4: Calculate the percentage change in quantity demanded by dividing the change in quantity by the average quantity. Do the same to calculate the percentage change in price.

Step 5: Calculate the price elasticity of demand by dividing the percentage change in quantity demanded by the percentage change in price, ignoring the negative sign.

Using the midpoint method, the elasticity of demand for laptops is about   .

The following details refer to a centrifugal pump. Outer diameter: 36 cm. Eye diameter: 18 cm. Blade angle at inlet: 28°. Blade angle at outlet: 20°. The flow velocity remains constant at 10 m/s. The whirl at inlet is zero. the manometric efficiency is 95%. If width at outlet is 3 cm, determine the power in W (η₀ = 83%).

there are 2 kinds of carbonyl acceptor structures in addition to benzoate esters that can be used in the reaction with phenylmagnesium bromide in order to produce triphenylmethanol. Also they react with a different number of equivalents of the Grignard Reagent. What are the carbonyl acceptors? please draw structure

If 155 mL of wet H2 is collected over water at 24 ∘C and a barometric pressure of 739 torr , how many grams of Zn have been consumed? (The vapor pressure of water is 22.38 torr.)

Propose a research study on the effects of warming climate and resulting advancing treeline. Assume that your hypothesis is that a bird's growth and reproduction will be negatively affected by the advancing treeline. The bird resides in one forest and flies at high elevations. What is an experiment that could take place? List the research design and methods. What are the materials, replicates for treatments, sampling and measurement procedures?

Suppose that the city of atlanta decided to tax cheeze and a $1 per cheeseburger meal tax is proposed. would you predict that the price of a cheeseburger meal would raise by a dollar in atlanta. explain with the help of a diagram

With the pressure held constant at 210 kPa , 49 mol of a monatomic ideal gas expands from an initial volume of 0.60 m3 to a final volume of 1.7 m3 .

A) How much work was done by the gas during the expansion?

B) What were the initial temperature of the gas?

C) What were the final temperature of the gas?

D) What was the change in the internal energy of the gas?

E) How much heat was added to the gas?