09/10/19

how to solve the problem
John is planting a rectangular garden that is 2 feet wide. He hasn’t decided how long to make it, but he’s considering 4 feet, 5 feet, and 6 feet. He wants to put a short fence around the garden to... more
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09/10/19

A pie weighs 4 pounds people keep eating slices of it and now it weighs 10 times less how much does the pie way now
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09/10/19

The reaction of an acid and a base produces a(n)_______ and water.
A. titrationB. molar solutionC. dilute solutionD. mixtureE. None of the Above
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09/10/19

I need to learn!
Zach’s lemon cookie recipe calls for 3/5 of a cup of sugar. Zach makes 5 batches of cookies, and then he splits up the cookies amongst 3 friends. How much sugar was used for each of the 3 friend’s... more
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09/10/19

A store sold a combined total of 480 history and sociology books in a week. the number of sociology books sold was 50 less than the number of history books. how many books of each type were soled?s?
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09/10/19

Bryan makes 8% commission on his sales. If his weekly sales total $4580, what is his commission?
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09/10/19

On the first day of vacation, you read one-quarter of a novel. On the second day, you read half of the remaining pages. On the third day, you read the last 141 pages of the novel.
How many pages does the novel have? How many pages did you read by the end of the second day?
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09/10/19

What is the density of a cell phone if its mass is 34.45g and has a volume of 90.25cm^3?
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09/10/19

mike rented a car. he drove 30 miles and the fee was $22.50. ben rented a car from the same establishment. he drove 50 miles and his fee was $31.50.

a) write an equation the represents the cost, y, of renting a car for x miles. b) if mike rented a car and spent $21, how many miles did he drive? c) what is the flat rate of the cab ride? d) how... more
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09/08/19

Calculate the amount of carbon dioxide that can could produced when 1mole of carbon is burnt in air& 1mole is burnt in 16g of dioxygen &2 moles of carbon are burnt in16g of dioxygen
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09/07/19

A technical machinist is asked to build a cubical steel tank that will hold 60L of water.Calculate in meters the smallest possible inside length of the tank. Round your answer to the nearest

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09/06/19

Ethanol is a common laboratory solvent and has a density of 0.789 g/mL. What is the mass, in grams, of 145 mL of ethanol?
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09/06/19

While driving your rental car on your vacation in Europe, you find that you are getting 9.5km/L of gasoline. What does this value correspond to in miles per gallon?
I tried but I got it wrong many times x/
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09/06/19

A small hot-air balloon is filled with 1.03×106 L of air (d = 1.20 g/L).

As the air in the balloon is heated, it expands to 1.15×106 L. What is the density of the heated air in the balloon?
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09/06/19

The total amount of nitrogen from fertilizer that is washed into a river is 1.80 × 105 mg per year. The river flows through the field at a rate of 600,000 liters per year (6.00 x 105 L/yr).
What is the concentration of nitrogen (expressed in milligrams of nitrogen per liter) in the river from the farmer's fertilizer?
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09/06/19

Chemistry/ stoichipmetry
3.9g KCl in 75.0mL of 0.240M CaCl2 solution. Assume that the volumes are addictive. What is MK+,MCa+, and MCl-?
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09/06/19

As the kinetic energy of the molcules in a substance increases, the
As the kinetic energy of the molcules in a substance increases, the Answer: a) temperature of the substance increases. b)potential energy of the substance changed. c)temperature of the... more
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09/06/19

TEMPERATURE IS: please choose from the options given
Temperature is Answer: a) associated with the sensation of hot and cold. b) proportional to the average kinetic energy of molecules. c)measured with thermometers. d)all of the above.
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09/05/19

If 58 grams of Calcium Carbonate is made to react with 40g sulphuric acid, the weight of calcium sulfate obtain is 48 grams. CAlculate the theoretical yield of Calcium Sulfate.

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09/05/19

chemistry chemistry
The specific heat of a certain type of cooking oil is 1.75 cal/(g ·°C). How much heat energy is needed to raise the temperature of 2.56 kg  of this oil from  23 C to 191 C? 
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09/05/19

i need help for chemistry plus i need the steps please help!!
57.0 calories are added to a lead block. if the temperature of the lead increases from 53 f to 79 f. what must the mass in grams of the lead block? the specific heat of lead is 0.128 j (g C)
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09/04/19

Chemistry question
In the movie, "Raiders of the Lost Ark", Indiana Jones takes a gold idol from a cave. The statue is resting on a table which is rigged with a weight sensor. The weight sensor can detect when the... more
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09/04/19

Plzz help!!! Chemistry
One cup of fresh orange juice contains 126mg of ascorbic acid(Vitamin C, C6H8O6).Given that one cup=240.8mL, calculate the molarity of vitamin C in orange juice. Express your answer to an... more
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09/04/19

What is the sum of 76.05 kg and 4.0 kg

What is the sum of 76.05 kg and 4.0 kg
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09/04/19

What is the sum of 76.05 kg and 4.0 kg

What is the sum of 76.05 kg and 4.0 kg
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