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Jessica

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Assume a baker of pure water has been boiling for 30 minutes. What is in the bubbles in the boiling water?Answer: water vapor.
1. 2 answers
2. 1,112 views
Heat is given off when hydrogen burns in air according to the equation:2H2 + O2 ---> 2H2) What is responsible for the heat? I
1. 1 answer
2. 4,300 views
Iron combines with oxygen and water from the air to form rust. If an iron nail were allowed to rust completely, one should find
1. 13 answers
2. 11,555 views
What would be the compound amount after 19 years an investment of 42,000 with an 11% interest rate compounded annually?
1. 1 answer
2. 467 views
How do you solve 4x+4=9x-36?I understand that you need to get the variables alone but to I add or subtract 9x to both sides?
1. 2 answers
2. 995 views
The density of water is 1 g/cm^3. What is the mass of 7.500 liters of water reported in kilograms?I got 7.5kg. Is this correct?
1. 4 answers
2. 779 views
Fran Molley is married, claims five withholding allowances, and earned 3,500 gross per month in edition to federal income tax,
1. 0 answers
2. 553 views
Arturo Muina is the captain of a charter fishing boat. He is paid salary of 140 per day He also averages tips amounting to 12%
1. 1 answer
2. 595 views
What issues do liberals and conservatives support and what constituency do they serve?
1. 1 answer
2. 500 views
Kelly drew four points A, B, C, and D in her notebook.A straight line joins points A and C. Another straight line joins A and B.
1. 1 answer
2. 709 views
Can someone provide an example of positive and negative control in a very easy and simple example?
1. 1 answer
2. 401 views
the area of a yard is 420 ft. what is the probability that any leaf landing in the yard will land ina circular wading pool that
1. 1 answer
2. 420 views
The first boat is sailing towards the North at the speed of 6 km per hour and sees that another boat is heading east at the
1. 1 answer
2. 635 views
Consider an experiment with four possible outcomes which we denote by Wi for i = 1,2,3,4. Sample space is Omega = {w1,w2,w3,w4}.
1. 0 answers
2. 397 views
At a certain temperature, the Kp for the decomposition of H2S is 0.774.H2S(g) <---> H2(g)+S(g) Initially, only H2S is present at
1. 1 answer
2. 642 views
Nancy made the following statement:The range of f(x) = ax + b is the set of all real numbers given that a and b are real
1. 1 answer
2. 468 views
consider the following reaction at 298K4Al(s)+3O2(g) yields 2Al2O3(s) delta H= -3351.4 Kj find delta S sys find delta S surr
1. 0 answers
2. 861 views
A student ran the following reaction in the laboratory at 650 K:H2(g) + I2(g) 2 HI(g) When she introduced 0.204 moles of H2(g)
1. 1 answer
2. 980 views
A student ran the following reaction in the laboratory at 327 K:CH4(g) + CCl4(g) 2 CH2Cl2(g) When she introduced 4.07E-2 moles
1. 1 answer
2. 1,645 views
A student ran the following reaction in the laboratory at 651 K:2 NH3(g) N2(g) + 3 H2(g) When she introduced 8.75E-2 moles of
1. 1 answer
2. 546 views
A rifle shoots 50.0 gram bullet with a muzzle a velocity of 350 m/s. How fast would a 80.0 kg person have to run in order to
1. 1 answer
2. 551 views
A 1000 kg car is going 8.90 m/s has a minimum braking distance of 6.0 meters. Find the average braking force exerted on the car
1. 2 answers
2. 449 views
MASS (GRAMS)Nac1- 0.9992 C12H22O11- 0.9822 NH4C1- 0.9510 C6H5OH- 0.9723 C9H20- 1.0038 *Find the Molar Mass (g/mol) for each *
1. 1 answer
2. 840 views
Which of the following variables are independent and dependent?1. Personality and Gender 2. Happiness 3. Scores
1. 0 answers
2. 377 views
Explain why the union of two countably infinite sets with nothing in common is also countably infinite.I said that it was
1. 1 answer
2. 448 views
A projectile launched straight upward at 141 m/s. How fast is it moving at the top of its trajectory? Suppose it is launched
1. 1 answer
2. 988 views
Split the natural numbers into three sets A, B, and C so that the sets have nothing in common, they each are countably infinite,
1. 2 answers
2. 549 views
When the stopper of the Erlenmeyer flask is loosened before weighing, why doesn't the carbon dioxide escape?Why isn't the mass
1. 1 answer
2. 509 views
Trini adds 10g of baking soda to 100g of vinegar. The mixture begins to bubble. When the bubbling stops, trini finds the mass of
1. 5 answers
2. 3,670 views
Which of the following is an example of how economics can affect science?A. Limited funding may lead scientists to research one
1. 3 answers
2. 1,388 views
What specific challenges did the South Vietnamese face as they tried to flee Vietnam in 1975?
1. 10 answers
2. 2,913 views
64.8% Of students went to the football game are the other half was busy . Can you multiply to get the answer
1. 1 answer
2. 361 views
What is the major difference between the two-dimensional and three- dimensional models of ethane and methane? When might you
1. 5 answers
2. 4,494 views
You take out a 30 year $100000 mortgage loan with an apr of 6% and monthly payments. In 12 years you decide to sell your house
1. 0 answers
2. 616 views
Table salt, NaCl(s), and sugar, C12H22O11(s), are accidentally mixed. A 4.00-g sample is burned, and 3.30 g of CO2(g) is
1. 1 answer
2. 860 views
The population of New York doubles during the workday. At the end of the workday, the population decreases by half. If the
1. 1 answer
2. 1,342 views
You are the buyer for the shoe outlet. You are looking for a livie of mes shoes to retail for $49.95 if your objective is a 55%
1. 1 answer
2. 456 views
Carousel Toys has ramper buckaroo wooden rocking horse for toodlers on a 30% markdown sale for 72.09 each what was the original
1. 1 answer
2. 443 views
The flour power bakery makes 200 cherry cheese cakes at a cost of 2.45 each. If a spoilage rate of 5% is anticipated at what
1. 0 answers
2. 638 views
Epicure market prpares fresh gourmet entrees each day. On wednesday, 80 baked chicken dinner were made at a cost of 3.50 each
1. 1 answer
2. 519 views
Whawas the orginal selling price of a trendmill curently on sale for 2,484 after a 25% markdown?
1. 1 answer
2. 430 views
You are shopping for an executive desk chair at the furniture Gallery. You see two you like on sale Chair A was originally
1. 1 answer
2. 559 views
Bloomingdales purchases imported perfume for $24.30 per ounce. If the store policy's to mark up all merchadise in that
1. 1 answer
2. 568 views
What is the percent markup based on selling price for the Western Wear shirts?
1. 1 answer
2. 408 views
Wyatt's western wear purchases shirts for $49.50 each. A $34.00 markup is added to the shirt. What is the selling price?
1. 1 answer
2. 504 views
jim paddle from one shore of a lake three miles wide at 4 mph, and john paddles from the opposite shore at 5 mph. how long will
1. 1 answer
2. 593 views
what is a device that does work in a electrical current?A. load B. turbine C. charge D. Magnet
1. 0 answers
2. 428 views
Arturo Muina is the captain o a charter fishing boat. He is paid a salary of $140 per day. He also averages tips amounting to
1. 0 answers
2. 502 views
Spencer Morris works in the telemarketing division for a company that pays a salary of $735 per month plus a commission of 3 1/2
1. 1 answer
2. 602 views
Foremost fish market pays a straight commission of 18% on gross sales, divided equally among the three employees working the
1. 1 answer
2. 512 views
Mitch Anderson is a security guard. He earns $7.45 per hour for regular time up to 40 hours time and a half for overtime and
1. 1 answer
2. 590 views
This is Translating Problems into Equations:(a) Ms. Dixon had a 25ft ribbon that was cut into two peices. (b) One piece is 6ft
1. 2 answers
2. 600 views
Nia and Trey both had a sore throat so their mom told them o gargle with warm salt water.-Nia mixed 12 teaspoon salt with 3 cups
1. 2 answers
2. 1,310 views
Earlier you determined that the proper ratio of packages of buns, packages of patties, and jars of pickles is 3:2:4. If you want
1. 2 answers
2. 1,602 views
Castle Mountain furniture sells desks for $346.00. If the desk cost $216.66, what is the amount of the markup?
1. 1 answer
2. 443 views
The Empire Carpet Company orders merchandise for $17,700, including $550 in shipping charges, from Mohawk Carpet Mills on May 4.
1. 0 answers
2. 492 views
Nature Garden Center buys lawn mowers that list for 679.95 less a 30% trade discount. What is the dollar amount of the trade
1. 1 answer
2. 576 views
What were the differences in kingship between France and England in the thirteenth century?
1. 0 answers
2. 328 views
The phrase “the heat absorbed or released by a system undergoing a physical or chemical change at constant pressure” isa.
1. 3 answers
2. 1,733 views
If 25.0 mLs of 0.150M nitric acid was used, how many grams of barium carbonate would be required for complete reaction?
1. 1 answer
2. 1,129 views
Which of the following statements is incorrect concerning the thermochemical equation below?2SO3(g)  2SO2(g) + O2(g); H°
1. 1 answer
2. 1,533 views
If 0.5000grams of barium carbonate was reacted with 25.0mLs of 0.15M nitric acid and the gas then collected in 100mL flask at
1. 1 answer
2. 1,088 views
Calculate the change in enthalpy when 52.0 g of solid chromium at 25°C and 1 atm pressure is oxidized. (H°f for Cr2O3(s) is
1. 1 answer
2. 2,801 views
Two 20.0-g ice cubes at –20.0 °C are placed into 295 g of water at 25.0 °C. Assuming no energy is transferred to or from the
1. 2 answers
2. 7,461 views
Which of the following classes has the largest ratio of boys to girls?
1. 0 answers
2. 385 views
What is the change in enthalpy when 4.00 mol of sulfer trixoide decomposes to sulfer dioxide and oxygen gas?2SO2 + O2 ---> 2SO3
1. 1 answer
2. 732 views
What is the heat of combustion of ethane, C2H6, in kilojoules per mole of ethane?
1. 1 answer
2. 1,584 views
Determine the enthalpy of the following reaction.2M(s) + 3Cl2(g) ---> 2MCl3(s)
1. 2 answers
2. 2,511 views
At constant volume, the heat of combustion of a particular compound is –3547.0 kJ/mol. When 1.239 g of this compound (molar
1. 1 answer
2. 632 views
Cr2O72-(aq) + I-(aq) -->Cr3+(aq) + IO3-(aq)What is the oxidizing species and the reducing species?
1. 1 answer
2. 807 views
Using your 0.0100M oxalate solution and only the equipment and supplies listed below, describe how to prepare a 0.00025M
1. 1 answer
2. 471 views
How many milliliters of 2.00 M HCl(aq) are required to react with 7.55 g of an ore containing 36.0% Zn(s) by mass?
1. 1 answer
2. 1,490 views
Describe how to prepare a 0.0100M Solution of oxalate using solid sodium oxalate and a 500mL volumetric flask and water.
1. 1 answer
2. 743 views
0.125g of sodium dichromate is to be reacted wtih 0.025M potassium iodide. How many mLs of the potassium iodide solution will be
1. 1 answer
2. 710 views
Can't figure out equationx/2+x/3=3/4 can you help me step by step.
1. 1 answer
2. 334 views
A 3.000gram sample of a hydrate compound containing Co, C2O4, and H2O was combusted to give 1.316g of Co3O4. What is the
1. 1 answer
2. 463 views
For homework I have to answer the following questions regarding Puerto Rican obituary by Pedro pietri but I am horrible at
1. 2 answers
2. 1,152 views
The census figures show that the average income for a family in a rural region is approximately $34,860 per year. A random
1. 1 answer
2. 506 views
All the verbs that have not been conjugated need to be either in preterite or imperfect form. My spanish teacher hasn't really
1. 5 answers
2. 1,588 views
I need help proving trigonometric identities. Most of my difficulty lies in actually factoring the equation. For example, one of
1. 1 answer
2. 491 views
Alliant Corporation sold $100,000,000 face value 8% bonds. The bonds mature in 20 years and pay interest semiannually. The going
1. 0 answers
2. 1,131 views
I have like 9 more of these problems, can someone please help me out so I can get started. thanx JSIn a random sample of 35
1. 1 answer
2. 435 views
I have like 9 more of these problems, can someone please help me out so I can get started. thanx JSIn a random sample of 35
1. 1 answer
2. 485 views
I have to write an analysis of Arthur Millers involvement in the Movie and in the Play of the Crucible.How is Millers
1. 2 answers
2. 425 views
What formula to use when finding patterns of sum of unit fractions #egyptian fractions
1. 0 answers
2. 953 views
When 10grams of sodium chloride, NaCL,dissolves in 100grams of water, the freezing point of the water gose down to -5.9C. when
1. 0 answers
2. 391 views
Tungsten trioxide (WO3) has a rich yellow color and is often used as a pigment in ceramics and paints. In order to test a
1. 0 answers
2. 988 views
A 2.304 gram sample containing an unknown amount of arsenic trichloride and the rest inerts was dissolved into a NaHCO3 and HCl
1. 0 answers
2. 1,115 views
This branch of psychology is primarily concerned with what can be readily seen and recorded
1. 1 answer
2. 318 views
A group of swimmers is resting in the sun on an off-shore raft. They estimate that 2.5 m separates a trough and an adjacent
1. 2 answers
2. 1,755 views
A group of swimmers is resting in the sun on an off-shore raft. They estimate that 2.5 m separates a trough and an adjacent
1. 1 answer
2. 499 views
a salt shaker filled with 17.0g sodium chloride contain how many moles?
1. 0 answers
2. 613 views
an aqueous solution solution of sodium borate is sometimes used to to fire-proof wood.a. what is the molarity of 2.50 L of
1. 1 answer
2. 1,581 views
50 ml of a .1103M solution of formic acid is titrated with a .2511M NaOH.a) What is the pH before and NaOH is added? b) How many
1. 0 answers
2. 1,005 views
Consider the diprotic acid H2A with K1 1*10^-3 and K2= 1*10^-9 .Find pH, [H2A], [HA], and [A2-] for a .2000M solution of H2A
1. 0 answers
2. 681 views
Please explain to me what I need to do .A cable 35 feet long runs from the top of a utility pole to a point on the ground 30
1. 1 answer
2. 566 views
A cafeteria manager needs to know how many apples and bananas to place in a cafeteria vending machine. He conducted a survey,
1. 4 answers
2. 740 views
A tea company is making a special blend of two teas for aa customer. The ratio of Kenyan tea to Darjeeling tea in the blend is 4
1. 12 answers
2. 1,039 views
2.00 L of 0.800 M NaNO3 must be prepareds from a solution which 1.50 M in concentration. How many mL of the 1.50 M are required
1. 1 answer
2. 712 views
The earth's Field is Roughly equivalent to an axial centered dipole. Find the vertical rate of change of the vertical component
1. 0 answers
2. 517 views

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