09/11/20

If you burn 33.7g of hydrogen and produce 301g of water, how much oxygen reacted?
In the combustion of hydrogen gas, hydrogen reacts with oxygen from the air to form water vapor.Hydrogen + Oxygen —> WaterIf you burn 33.7g of hydrogen and produce 301g of water, how much... more
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09/11/20

B is the midpoint of AC. AB =25 and AC= 8x+2 . Find x , BC, and AC.
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09/11/20

8 stoichiometry questions

1) Sulfur burns in excess air to form sulfur dioxide according to the equation: S(s)+O2(g)-> SO2(g)What volume of sulfur dioxide is produced (at room temperature and pressure) from 24g of... more
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09/11/20

Science Project
For a science assignment, Friedrich and his classmates are to go outside and mark off a plot 2 feet by 2 feet and count the number of insects on top of the soil in order to estimate the population... more
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09/11/20

Stuck on a density = mass / volume equation
A chemist encounters an unknown metal. They drop the metal into a graduated cylinder containing water, and find the volume change is 3.2 mL. If the metal weighs 2.3 g, what is the density in g/mL... more
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09/11/20

Stoichiometry 3 questions
Aluminium reacts with oxygen according to the equation: 4Al(s)+3O2(g)-> 2Al203(s) What mass of aluminum is needed to produce 3.4 g of the oxide?Zinc reacts with steam according to the equation:... more
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09/11/20

Linear Equations of Problem Scenarios

Miss Johnson received a $50 gift card to Starbucks for her birthday. Her favorite drink, strawberry-Açaí refresher, costs $4.50. Miss Johnson uses her gift card to purchase her drinks. Write an... more
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09/11/20

Linear Equations of Problem Scenarios

The file size of a video depends on the playing time of the video. The table shows the playing time in minutes,x, and file sizes of these videos, y, in megabytes,MB. Write an equation that... more
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09/11/20

Linear Equations of Problem Scenarios

A t-shirt company charges a $20.00 set-up fee plus $8.95 for each t-shirt that is screen-printed with a school’s logo. Write a function that can be used to find the total cost, C, for purchasing... more
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09/10/20

Use the information to create a system of equations

Each carton of food will feed 30 people, while each carton of clothing will help 6 people. Each 20 ft.³ box of food weighs 40 pounds and each 5 ft.³ box of clothing weighs 20 pounds. The commercial... more
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09/10/20

Need help with Factors of Polynomials ASAP. Thanks a bunch!
1. Find the two errors in the work shown below. Explain the errors and then enter the correct solutions, showing the correct steps. 6x3 - 7x2 - 3x = 0 x(6x2 - 7x - 3) = 0 x(6x2 - 9x + 2x - 3) =... more
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09/10/20

What is the equation of the vertical line passing through the point 7, -11
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09/10/20

Please answer my question
What is the rate of change for a car that travels 250 miles in 5 hours?
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09/10/20

The length of a rectangle is 5 inches more than four times its width. If the perimeter of the rectangle is 90 inches, find its length and width.
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09/10/20

A small radio transmitter broadcasts in

A small radio transmitter broadcasts in a 53 mile radius. If you drive along a straight line from a city 70 miles north of the transmitter to a second city 63 miles east of the transmitter, during... more
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09/10/20

How many grams of NH3 can be made from 4.85 mol of H2 and excess N2?
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09/10/20

Model Contexts with Two Variable Expressions
Gavin works as a salesperson at an electronics store and sells phones and phone accessories. Gavin earns a $13 commission for every phone he sells and a $3 commission for every accessory he sells.... more
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09/10/20

The population of Atlanta is currently 523,738 people. It is growing at a rate of 2.51% per year.

1. explain why its exponential and not linear2. write an equation to represent the exponential function3. create a table to represent the exponential functiona.identify the growth rate in your... more
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09/10/20

A chemist is using 337 milliliters of a solution of acid and water. If 17.9% of the solution is acid, how many milliliters of acid are there?
A chemist is using 337 milliliters of a solution of acid and water. If 17.9% of the solution is acid, how many milliliters of acid are there?
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09/10/20

Create a paragraph with these words:
Bias, Clickbait, Confirmation bias, Debunk, Disinformation, Editorial, Fake news, Information, Misinformation, Propaganda, Raw information, Reliability, and Verify
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09/10/20

I need help solving this problem

A bar of silver weighs 0.800kg; what is the weight of at in grams , milligrams and pounds? 1lb= 454g
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09/10/20

I need help solving this problem

Average density of earth is 5.5 g/cm^3 and it weighs 6.0x10^27g. What is the earths volume in cubic kilometers and liters??
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09/10/20

Composite function bike problem
When an 18-speed touring bicycle is in sixth gear, the gear ratio is 3:2, which means that the wheels of the bicycle revolve 3 times for every 2 revolutions of the pedals. This relationship can be... more
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09/09/20

read description

Potassium superoxide, KO2, reacts with carbon dioxide to form potassium carbonate and oxygen: 4KO2 + 2CO2 —> 2K2CO3 + 3O2This reaction makes potassium superoxide useful in a self-contained... more
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09/09/20

At the city museum, child admission is $6.10 and adult admission is $9.30. On Friday, 163 tickets were sold for a total sales of $1311.10. How many child tickets were sold that day?
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