Answers by visitors named: Sanaya

A roll of fabric was 144 inches long. A customer bought 2 feet of the fabric. How many feet of fabric were remaining?

13 years ago

A sack of sand measures 21 kilograms and 714 grams,and a sack of yard clippings measures 7 kilograms and 192 grams. How much more does the sack of sand measure than the sack of yard clippings?

13 years ago

Levi worked in his neighbor's yard for 7 hours trimming the trees. After trimming, he bagged up the trimmings in 38 minutes. How many minutes did he work in the yard altogether?

13 years ago

Jennie and Millie are sister gorillas. Jennie is 57 kilograms and 663 grams,and Millie is 113 kilograms and 181 grams. How much do the sister gorillas weigh together?

13 years ago

Holly ordered 3 pounds and 11 ounces of roast beef and 4 pounds and 10 ounces of ham. How much meat did Holly order?

13 years ago

Jenelle has a blue jug and a red jug, both containing water. The blue jug has 4 gallons and 1 quart of water in it, and the red jug has 2 gallons and 2 quarts of water in it. How much water is in both jugs?

13 years ago

The area of a rectangle is 45 square inches. One dimension is 5 inches. What is the perimeter?

12 years ago

The perimeter of a rectangle is 38 centimeters. The length is 7.5 centimeters. What is the width?

12 years ago

Evaluate the integral. Problem#1 Integral sign 4dx/[(x+3)(x^2 +3x) Does it matter where A, B, and C is placed over. Is there a particular order? Is it ..... (A/x)+(B/(x+3))+(c/(x+3)^2=4 Or ... (A/x+3)+(B/x)+(C/(x+3)^2)=4 I am confused because I get differ...

9 years ago

Integral sign 8x/(x-1) dx Is it 8x+8ln abs (x-1)+C ?

9 years ago

A solution is prepared by mixing 50.0mL of 0.001 M HCl and 10.0 mL of 0.200 M NaCl. What is the molarity of chloride ions in this solution? My work: (0.001 mol/L)((0.05 L)= 0.005 mol HCl (0.200 mol/L)(0.01 L)= 0.002 mol NaCl 0.005+0.002=0.007 mol of chlor...

9 years ago

Calculate integral [0, infinity) xe^(-x) dx

9 years ago

Integrate x/(6x-5) dx The answer is 1/6 x + 5/36 ln abs (36x-30) + C... But I don't understand why it is 5/36 times ln.. I thought that when you factored out the 5 you would get 5 times ln abs (36x-30)..

9 years ago

How do you integrate e^(-t/r)?

9 years ago

How do you integrate e^(-t/r) dt?

9 years ago

Integrate e^(-t/r) WITH RESPECT TO dt?

9 years ago

Is it correct to say.. "This chicken tastes fabulous." Is the word "fabulous" used correctly in this context?

9 years ago

Calculate the frequency of light associated with the emission from n=5 to n=4 in the hydrogen atom. I got -7.41 x10^13 Hz, but the answer would make sense if it is positive... So does this mean that when the electrons jump from n=5 to n=4, energy is emitt...

9 years ago

Name the compound or give molecular formula. 1. Pt(NO2)2 : ? Is it Platinum (II) Nitrite 2. Manganese (II) bromide pentahydrate:? Is it MnBr2 • 5H2O

9 years ago

How do I integrate sqrt of (1+e^(2x)) if doing u-sub.. u=sqrt of (1+e^(2x)) and ten using partial fraction...?

9 years ago

What is the increasing dipole moment for CO,CS, and SiS? My answer: SiS<CO<CS Is this correct?

9 years ago

Compute the surface area of revolution about the x-axis over the interval. y = x^2, [0, 4] Is it (pi/12)(65^2 - 65)^(3/2)?

9 years ago

You can mix 100.mL of 1.0 M HCl with 100 mL of 1.0 NaOH, both at 25 degree Celcius. The temperature of your calorimeter rises by 5.98 degree C, and its heat capacity is 100 J/degre C. How much energy is released per mol of H2O formed? My answer: 6x10^6 J...

9 years ago

You can mix 100.mL of 1.0 M HCl with 100 mL of 1.0 NaOH, both at 25 degree Celcius. The temperature of your calorimeter rises by 5.98 degree C, and its heat capacity is 100 J/degre C. How much energy is released per mol of H2O formed? My answer: 6x10^6 J...

9 years ago

An unknown piece of metal weighing 100. g is heated to 90.0 degrees Celcius. It is dropped into 250 g of water at 20.0 degrees Celcius. When equilibrium is reached, the temperature of both the water and piece of metal is 29.0 degrees Celcius. Determine th...

9 years ago

Since most chemical reactions are conducted in containers open to the armisphere, why is the energy transfer associated with a chemical reaction generally expressed as the change in enthalpy? Is it because the enthalpy of reaction measures the change in e...

9 years ago

Why is gasoline (octane) better than diesal (cetane)?

9 years ago

You are at your cabin in the woods. Will you be able to take a hot bath tonight if only 0.1 lb of propane remains in the tank? Explain. My answer: No, I will not be able to take a hot bath. By making assumptions and approximations, I got... energy release...

9 years ago

Why is the pressure of a gas does not depend on the molar mass of the gas?

9 years ago

1. Oxygen (O2) is about 20% of our air, with about 80% nitrogen and a bunch of minor components. In Colorado Springs, where I grew up, the elevation is ~ 6500 feet and atmospheric pressure is only around 12 psi (vs. 14.7 psi at sea level). Under those con...

9 years ago

Reacting 1 L of H2(g) with 1 L C2H2(g) (both at STP) results in the formation of 1 L of C2H4(g) if the reaction is maintained at the same conditions (STP) and goes to completion. If this reaction produced 6.3 kJ of heat (absorbed by the surroundings), cal...

9 years ago

I am stuck on b)... Reacting 1 L of H2(g) with 1 L C2H2(g) (both at STP) results in the formation of 1 L of C2H4(g) if the reaction is maintained at the same conditions (STP) and goes to completion. If this reaction produced 6.3 kJ of heat (absorbed by th...

9 years ago

Combusting 44.8L of H2 with 22.4 L O2 (both at STP) results in the formation of 44.8 L of H2O if the reaction is maintained at the same conditions (STP) and goes to completion. Given the heat of formation of water (= -241.8 kK/mol) calculate a) the PV wor...

9 years ago

Please check my answers. Thank you! The game of American roulette involves spinning a wheel with 38 slots: 18 red, 18 black, and 2 green. A ball is spun onto the wheel and will eventually land in a slot, where each slot has an equal chance of capturing th...

9 years ago

The dimensions of a triangular prism are shown below each congruent base is a right triangle which measurement is closest to the total surface area of the triangular prism in square inches?

4 years ago

Sanaya

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