10/30/21

Consider the expression:
Consider the expression: x2(13-x)a). Evaluate the expression when x is -23. b). What objects are being subtracted? c). What objects are being multiplied?
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10/22/21

The angles of a triangle are (2m-20)°, 30° and (m+20)°. Find m.
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10/22/21

What is the answer in the blank for light liquid and heavy liquid concerning specific gravity and percent error?
The format goes in this:Light liquid- Mineral Oil and Heavy liquid – NaCl soln 20%)250 mL graduated cylinder with the liquid to be tested up to the 200 ml mark.Hydrometer MethodResult: (for light... more
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10/22/21

What quantity in moles of iron atoms do you have if you have 3.40 × 10²³ atoms of iron. (The mass of one mole of iron is 55.85 g.)
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10/17/21

A car starts on a trip and travels at an average speed of 40 miles per hour. Three hours later, a second car starts on the same trip and travels at an average speed of 55 miles per hour.
A car starts on a trip and travels at an average speed of 40 miles per hour. Three hours later, a second car starts on the same trip and travels at an average speed of 55 miles per hour.a. Find the... more
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10/16/21

h(x)=-0.005x^2+4.2x+900 Word Problem

A motorcycle stunt rider jumped over the canyon. The path of her motorcycle was given approximately by the function H(x)=−0.005x^2+4.2x+900, where H is measured in feet above the ground and x is... more
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10/16/21

Quadratic Function Algebra Problem

A premium movie theater currently charges $14.00 per ticket and sells 900 tickets every week. A) What is the current weekly revenue? B) The theater estimates that for each $0.50 increase in ticket... more
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10/15/21

1000 kg of ore typically contains about 18 kg of copper and 58 g of silver. Determine the percentage of the ore that contains copper.
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10/15/21

Consider each given algebraic statement.
i). Classify each as an equation or an expression.ii). For each expression classify it as polynomial, monomial, binomial, trinomial, and/or none of these.iii). Also, for each polynomial: list each... more
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10/15/21

The side lengths of a square are tripled.
a). What is the length's multiplier? What is the percentage increase of the length?b). From the new (tripled) length, what percentage decrease would be needed to return to the original length? What... more
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10/12/21

This paragraph is missing these connecting words between phrases or clauses: so, meanwhile, although, and otherwise.
 Offshore drilling has become a worrisome fuel source; the expenses from the Exxon Valdez and BP oil spills were astronomical. Im so confused because i put meanwhile after semicolon but the... more
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10/11/21

How many molecules of sugar are in a 6 lb bag of sugar? The formula for table sugar or sucrose is C12H22O11.
write the answer in scientific notation
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10/11/21

What is the mass in grams of 4.86 x 1023 atoms of vanadium (V)?
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10/09/21

What are the products? C + O2 → CO2
a. C and CO2b. O2 only c. CO2d. C only
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10/08/21

Forensic Science Chemistry

You have examined a small chip of glass found on the clothing of a burglary suspect and compared that chip of glass (the questioned sample) with a single chip of the known broken glass from the... more
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10/08/21

Consider the following Linear Programming Problem
Consider the following Linear Programming Problem: A school district is buying new buses to transport students in Winnipeg. There are two types of buses available: the Bronco buses and the Neon... more
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10/07/21

find two consecutive integers such that ten more than twice the smaller is seven less than three times the larger
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10/07/21

Accounting Question, Please Help
What does it mean when a company has a major expense? Like for example, "The major expense for Dollar Tree Inc. is called Cost of Goods Sold, which represents the cost of the goods Dollar Tree sold... more
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10/06/21

Robert and his shelves

Robert needs to cut four shelves from a board that is 3 meters long. The first shelf can be represented by x. The second shelf is 15 centimeters longer than the first shelf. The third shelf is 25... more
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10/06/21

average atomic mass
Calculate the atomic mass for magnesium given the following data for its natural isotopes.24Mg: 23.985 amu, 78.70%25Mg: 24.986 amu, 10.13%26Mg: 25.983 amu, 11.17%
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10/05/21

An experiment requires 12.0 mL of a 0.100 M solution of HCl. If you have a 12.0 M HCl stock solution in the laboratory, how would you prepare enough 0.1 M solution to run at least 3 experiments?
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10/03/21

How many grams of potassium carbonate?
According to the following reaction, how many grams of potassium carbonate will be formed upon the complete reaction of 28.9 grams of potassium hydroxide with excess carbon dioxide? CO2+2KOH=K2CO3+H2O more
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10/03/21

Is the correct answer(s) PCl3 = 2.50 M, Cl2 = 1.40 M, and PCl5 = 1.51 x 10^-5 M?
Consider the following reaction:  PCl3 (g)+ Cl2 (g) PCl5 (g) K = 4.30 x 10-6 Initially, 2.50 M PCl3 and 1.40 M Cl2 are placed into a container and allowed to reach equilibrium. Determine the... more
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10/03/21

Determine how mnay grams of CO2 are produced by burning 6.77 g of C4H10
Determine how mnay grams of CO2 are produced by burning 6.77 g of C4H10
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10/02/21

The balanced combustion reaction for C6H6 is 2C6H6(l)+15O2(g)⟶12CO2(g)+6H2O(l)+6542 kJ

If  6.200g C6H6 is burned and the heat produced from the burning is added to 5691g of water at 21C, what is the final temperature of the water?
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