1) Calculate the number of mL of water in 1.00 cubic feet of water. 2) The...

1) Calculate the number of mL of water in 1.00 cubic feet of water.

2) The radius of an AI atom is 0.143 nm. How many AI atoms would have to be laid side-by-side to give a row of atoms 1.00 inch long? (Assume atoms are spherical in shape.)

3) A given point on the moon is 240,000 mi from Earth. How long does it take for light from Earth to reach a reflector at that point on the moon and then return to the Earth if the speed of light is 3.00 * 10^8 m/s?

4) A spherical steel ball has a mass of 3.475 g and a diameter of 9.40 mm. What is the density of the steel in g/cm^3? The volume of a sphere = (4/3)pir^3

Expert Solution

queen_honey_blossom answered 1 year ago

-------------------------------------------------------------------------------- A vat holds 20 cubic feet of liquid and is initially full. Water containing 6...

-------------------------------------------------------------------------------- A vat holds 20 cubic feet of liquid and is initially full. Water containing 6 grams of salt per cubic foot is being poured into the vat at the rate of 4 cubic feet per minute, and is instantly mixed. The mixed liquid is draining from the vat at 4 cubic feet per minute, so the vat is always full. Let y(t) denote the number of grams of salt in the vat after t minutes. Write the differential equation...

The mean consumption of water per household in a city was 1212 cubic feet per month....

The mean consumption of water per household in a city was 1212 cubic feet per month. Due to a water shortage because of a drought, the city council campaigned for water use conservation by households. A few months after the campaign was started, the mean consumption of water for a sample of 92 households was found to be 1167 cubic feet per month. The population standard deviation is given to be 220 cubic feet. a. Find the p-value for the...

1. Calculate the number of atoms per cubic centimeter of lead given that the density of...

1. Calculate the number of atoms per cubic centimeter of lead given that the density of lead is 11.3 ?/??3 and its atomic weight is 207.21. 2. Calculate the ionization potential of a singly ionized ?? 4 atom. 3. (a) How much energy would be released if 1 g of deuterium were fused to form helium according to the equation 2? + 2? → ?? 4 + ?? (b) How much energy is necessary to drive the two deuterium nuclei...

To calculate the number of atoms in a face centered cubic cell?

What is the molality of a solution containing 50.6 mL of water (d= 1.00 g/mL) and...

What is the molality of a solution containing 50.6 mL of water (d= 1.00 g/mL) and 0.122 g of 2-pentanol?

1) A student recrystallizes 1.00 g of the unknown compound from 50 mL of water. After...

1) A student recrystallizes 1.00 g of the unknown compound from 50 mL of water. After allowing the mixture to cool to room temperature (25 °C), the student collects the recrystallized compound using vacuum filtration. What is the theoretical maximum percent recovery of the unknown compound for this recrystallization step? 2)A student recrystallizes 1.00 g of the unknown compound from 50 mL of water. After allowing the mixture to cool in an ice bath (0 °C), the student collects the...

The number of contaminants in samples of one cubic centimetre of polluted water has a Poisson...

The number of contaminants in samples of one cubic centimetre of polluted water has a Poisson distribution with a mean of 1. a. What is the probability a sample will contain some (one or more) contaminants? b. If four samples are independently selected from this water, find the probability that at least one sample will contain some (one or more) contaminants? c. If 100 samples are selected instead, what is approximately the probability of seeing at least 60 samples with...

1.Calculate the number of molecules in 0.750 mol of methane, CH4. 2. Calculate the number of...

1.Calculate the number of molecules in 0.750 mol of methane, CH4. 2. Calculate the number of moles in 15.0 g of oxygen gas, O2. 3. Calculate the mass of 115 molecules of carbon dioxide 4. Calculate the number of molecules in 2.25 g of sulfur hexafluoride. 5. Calculate the number of carbon atoms in 1.50 g of butane, C4H10. 6. Calculate the mass of calcium chloride that contains 3.20 × 1024 atoms of chlorine. 7. Calculate the number of water...

Determine the quantity of grout needed for the wall in problem 6-1 if 18 cubic feet...

Determine the quantity of grout needed for the wall in problem 6-1 if 18 cubic feet of grout is required per 100 square feet of block. (Problem 6-1) Determine the number of 7 5/8-inch-high by 5 5/8-inch-wide by 15 5/8-inch-long concrete blocks required to complete a wall 80 feet long by 12 feet high. Allow for a 3/8-inch mortar joint.

A 1.00-g sample of piperazine hexahydrate is dissolved in enough water to produce 100.0 mL of...

A 1.00-g sample of piperazine hexahydrate is dissolved in enough water to produce 100.0 mL of solution and is titrated with 0.500 M HCl. A.) What is the initial pH of the solution, before any titrant is added? B.) The percent neutralization points for a titration indicate the percent of the reagent that has reacted. For example, at the 25% neutralization point for piperazine, 75% (0.75×[Pip]) of the base remains, and 25% is neutralized to form PipH+. Calculate the pH...

Question