10/02/18
How much did they spend on each day?
Steve and sherry travelled to the outlet mall in Michigan city for a three day shopping extravaganza. On the second day of shopping they realized they spent $120 more than the first day. The third...
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10/02/18
The length of a rectangle is three times the width. The area of the rectangle is 108 sq in. What is the width of the rectangle? 6 in. 9 in. 12 in.
The length of the rectangle is three times the width
10/02/18
SO2 + NO2 ⇔ SO3 + NO
Kc = 3.00 for the gas phase reaction SO2 + NO2 ⇔ SO3 + NO If 1.00 mole of SO2 and 1.00 mole of NO2 are put into an evacuated 2.00 L container and allowed to reach equilibrium, set up the RICE...
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10/02/18
lost when 135 g of iron cools from 118∘C to 54 ∘C
Answer is joules, rounded to 2 significant figures.
10/01/18
The sum of the two numbers is 35. Three times the larger number is the same as 4 times the smaller number. Find the larger number
HINT: let x = larger number
35 - x = smaller number
10/01/18
How many pizzas did he sell on each of the days?
Tonys pizza is a popular pizza place in town. Tony sold 35 more pizzas on Friday than on Sunday. He sold 65 more pizzas on Saturday that Sunday. If Tony sold 310 pizzas over the 3 days, how many...
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10/01/18
Need assistance with this Chemistry Question
1a. Write a balanced equation and corresponding Ka expression for the ionization of the weak acid lactic acid (HC3H5O3, Ka= 1.62 x 10^-4) in water.b. A buffer solution is prepared by dissolving...
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10/01/18
Need help with this Chemistry questions
Determine the volume of 1.0M tartaric acid, H2C4H2O6, solution that when diluted to a total volume of 250.0 ml produces a solution that is 0.050M in tartaric acid
Determine the mass of potassium...
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09/29/18
Finding pH of a buffer solution
100 mL of buffer solution that is 0.15M HA (Ka= 6.8x10-5) and 0.20M NaA is mixed with 18.8mL of 0.25M HCl. What is the pH of the resulting solution?
09/28/18
If the length of a rectangle field is 6 feet less than four times it’s width and the perimeter is 128 feet what is the length of a rectangular field
I don’t know the answer I’ve tried everything I know
09/28/18
Titrating NaOH and acetic acid in vinegar
If the vinegar used in the lab had 5.89 g of acetic acid per 100. mL of vinegar, what volume (in mL) of 0.0998 M NaOH would you use to reach the endpoint of the titration?
How many ml of 0.100 M NaOH are required to completely neutralize 50.0 ml of 0.125 M H3PO4 solution?
How many ml of 0.100 M NaOH are required to completely neutralize 50.0 ml of 0.125 M H3PO4 solution?
09/28/18
Is it possible to prepare 4-iodo benzyl alcohol from Benzyl alcohol
4-Iodo benzyl alcohol to be prepared .
How is possibility of 2 and 3 position
09/27/18
help me please
A train departs station A at exactly 3:00 pm and travels to station B, which is 7.3km away. The trip takes exactly 34 minutes. What was the average speed of the train in meters per minute?
09/27/18
An electron travels 7.78 m in 7.01 × 10e−8 s. How fast does it travel in cm/s? Answer in units of cm/s.
An electron travels 7.78 m in 7.01 × 10e−8s.How fast does it travel in cm/s?Answer in units of cm/s.
09/27/18
The sum of two numbers is 103. If twice the smaller number is subtracted from the larger number, the result is 16. Find the two numbers.
The sum of two numbers is 103. If twice the smaller number is subtracted from the larger number, the result is 16. Find the two numbers.
at what temperature will aluminum melt if you have 5 grams
the melting point of aluminum is 660 degrees Celsius.
09/26/18
Chemistry Question
How many molecules (not moles) of NH3 are produced from 8.52×10−4 g of H2?
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When looking at a compound name, what is one way you can tell that the compound is covalent?
I need help with science homework.
09/26/18
How many milliliters of 0.350 M Na2S2O3 solution are needed to titrate 2.423 g of I2 to the equivalence point?
How many milliliters of 0.350 M Na2S2O3 solution are needed to titrate 2.423 g of I2 to the equivalence point?I2(aq) + 2 S2O32-(aq) S4O62-(aq) + 2 I -(aq)
09/26/18
How many grams of each of the following compounds are present after the reaction is complete?
Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. A solution containing 3.25 g of sodium carbonate is mixed with one containing...
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09/26/18
Need help with this half life question
The first-order rate constant for the decay of Cs-137 is 6.3 x 10^-5d^-1(read: per day). Determine the time, in years, that corresponds to one (1) half-life. (1 y = 365 d)
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