01/17/21

Chemistry pressure exerted by different substances at a constant temperature
A 20.0–L tank at a temperature of 27 ℃ contains a mixture of 3.5 moles of oxygen and 6.0 moles of hydrogen. Find the partial pressure exerted by each gas and then complete the equation below to... more
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01/17/21

How much air would have to be forced into the tank to increase the pressure, assuming no change in temperature?
An air storage tank whose volume is 110 liters contains 2kg of air at a pressure of 15 atmospheres. How much air would have to be forced into the tank to increase the pressure to 18 atmospheres... more
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01/17/21

Find the number that is 3/4 of the way from 2 5/6 to 8 5/12
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01/17/21

250 Words Question
Describe a problem you have solved or a problem you would like to solve. It can be an intellectual challenge, a research query, an ethical dilemma—anything that is of personal importance, no matter... more
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01/17/21

If a substance fails to rust or tarnish, does a physical or chemical change occur?
Rusting and tarnishing are two chemical changes that matter undergoes. If matter FAILS to rust or tarnish, would you say it has undergone a chemical or physical change?
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01/17/21

what is the maximum revenue to the nearest whole​ dollar
The manufacturer of a CD player has found that the revenue R​ (in dollars) is R(p)=−5p2+1,520p, when the unit price is p dollars. If the manufacturer sets the price p to maximize​ revenue, what is... more
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01/16/21

An airplane flies at an altitude of 6 miles toward a point directly over an observer. Consider 𝜃 and x as shown in the figure.
(a) Write 𝜃 as a function of x.𝜃  = _____(b) Find 𝜃 when x = 12 miles and x = 2 miles. (Enter your answers in radians rounded to two decimal places.)x = 12 miles 𝜃 ≈ ________x = 2 miles ... more
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01/16/21

Gas equations pressure volume energy
A sample of helium gas occupies a volume of 0.50 L at a pressure of 0.95 atm. What volume will the gas occupy at a pressure of 1.50 atm if the temperature remains constant?
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01/16/21

A 17 ml sample of cyclohexanone (density = 0.95 g ml-1) is reacted with an excess of methyl magnesium bromide in anhydrous THF, then water is added to the mixture.
A. Draw and name the alcohol that is formed in this reaction.B. If 11.3 ml of the alcohol (density = 0.92 g ml-1) is obtained after purification, calculate the percentage theoretical yield of the... more
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01/16/21

Write log 6^7,776=5 in exponential form.
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01/16/21

pH of organic acids
Hi!I have started writing a lab report about a specific lab that I will be conducting on Wednesday, but before I do that lab I was hoping to finish writing down some background information in the... more
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01/16/21

MODELING WITH MATHEMATICS
Write and solve an equation to determine what the balance $b$b​  in the account was 4 years ago.The balance of an investment account is $308 more than the balance 4 years ago. The current balance... more
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01/15/21

Find the distance between point A(7, -2) and the line y = x + 5. Round your answer to the nearest tenth.
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01/15/21

Write the equation of a line that passes through the point A(2, 7) and is perpendicular to the equation x = 4

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01/15/21

The sum of 3 times a number and five decreased by 11.
Write as an algebraic expression
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01/15/21

Marshall bought 10 bags of chips for his school party. A bag of plain chips cost $2.00, and a bag of flavored chips cost $2.50. He spent a total of $23.00

Marshall bought 10 bags of chips for his school party. A bag of plain chips cost $2.00, and a bag of flavored chips cost $2.50. He spent a total of $23.00 on chips. How many bags of flavored chips... more
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01/15/21

The function f(x) = 12,500 – 800x represents the resale value of Joe’s car as it depreciates

The function f(x) = 12,500 – 800x represents the resale value of Joe’s car as it depreciates x years after its purchase. The table below shows the value of Adam’s car as it depreciates... more
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01/15/21

Function 1 is represented by the equation y = 3x + 1. Function 2 is represented by this table.
Function 1 is represented by the equation y = 3x + 1. Function 2 is represented by this table.the table: X. Y-3. 2-2. 6-1. 10
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01/15/21

the ratio of the side lengths in a rectangular is 5: 2: 5: 2, and its area is 90 square feet. find the side lengths
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01/15/21

2Al + 3Cl2 --> 2AlCl3 If 12.8 g of aluminum reacts with 39.1g of chlorine, how many g of AlCl3 forms? Also what is the limiting reactant(name only, not mass)
I dont understand the limiting reactant part on the homework
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01/15/21

Financial Literacy
. A local newspaper charges for its classified ads. Letters, numbers, spaces, and punctuation eachcounts as one character. They charge $49 for the first 150 characters and $0.25 for eachadditional... more
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01/14/21

Find the value of "a" which makes this statement true:

The problem is: x2a-12 ⋅ x2a+13=x9a-7
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01/14/21

Algebra 1 math homework

Write the equation of the line perpendicular to y=2/3x+1/3 that passes through the point (−3,4).
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01/14/21

math pre calculus 12
Solve and state any restrictions. 4/7X = 11/7
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01/14/21

five ordered pairs on the graph of y = -0.5x.
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