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Melissa

Questions (688)

how do do calculate ΔHr and ΔSr?
1. 1 answer
2. 396 views
1.0 mol of water (c=4.184 J/g.oC), 1.0 mol of ethanol (c=2.46 J/g.oC), 1.0 mol of carbon tetrachloride (c=0.861 J/g.oC), and 1.0
1. 1 answer
2. 729 views
In an experiment 50 g of a metal was heated to 100oC and placed in 200 g of a liquid at 25oC. Which of the following
1. 1 answer
2. 1,294 views
Zinc is often used to calibrate calorimeters because it undergoes a very sharp phase transition from the solid to the liquid at
1. 2 answers
2. 658 views
Consider a system of 3 molecules, A, B, and C. Suppose the 3 units of energy can be distributed over the three atoms where each
1. 2 answers
2. 470 views
Consider a system of 3 molecules, A, B, and C. Suppose the 3 units of energy can be distributed over the three atoms where each
1. 0 answers
2. 453 views
Given the demand function q=173-5p, determine the price where demand has unit elasticity.
1. 1 answer
2. 506 views
Given the demand function q=173-5p, determine the price where demand has unit elasticity.
1. 1 answer
2. 1,439 views
the demand for ground chuck(hamburger) in a certain region of the US is given by q= 3.41p^-0.22. is the demand for ground chuck
1. 1 answer
2. 1,391 views
a local office supply store has an annual demand for 50,000 cases of photocopier paper per year. it costs $2 per year to store a
1. 0 answers
2. 1,130 views
Use the bond energies given in the "Bond Energy" table (can be gained from google) to estimate the delta Ho for the reaction
1. 1 answer
2. 630 views
Use the bond energies given in the "Bond Energy" table (can be gained from google) to estimate the delta Ho for the reaction
1. 2 answers
2. 681 views
The equation for synthesis of the poisonous gas COCl2 isCO(g) + Cl2(g)COCl2 If 43.2 kJ of energy is evolved when 39.5 g of COCl2
1. 2 answers
2. 2,487 views
I am doing a lab online and have no clue on how to get started with the following questions? Please Help me!1. Calculate and
1. 3 answers
2. 2,215 views
What volume (in Liters) of hydrogen must react to form 17.0L of ammonia according to the following balanced equation:N2(g) +
1. 2 answers
2. 588 views
A volume of 0.285 L of a gas at STP weighs 0.537 g. Calculate the molar mass of the gas(1)(0.285) = n(0.0821)(273). .0036 is
1. 3 answers
2. 600 views
make 2 words, first one 8 letters and second work 4 letters out of these s l r t n r u p a e s a
1. 2 answers
2. 546 views
How does studying social institutions help sociologists understand society?
1. 0 answers
2. 407 views
If f(x)=5ex+4xe find f'(x) .
1. 1 answer
2. 414 views
Water flows (v = approx 0) over a dam at the rate of 660 kg/s and falls vertically 86 m before striking the turbine blades.
1. 1 answer
2. 875 views
A 120-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 400 N. For the first 17 m the
1. 1 answer
2. 1,012 views
Write 9850 in scientific notation
1. 2 answers
2. 416 views
I'm doing a research essay about "anchor babies", or in other words, babies born from illegal immigrants.How would you write a
1. 16 answers
2. 721 views
An airplane flies at 200.0 km/h relative to the air. What is the velocity of the plane relative to the ground if it flies during
1. 3 answers
2. 1,316 views
Estimate the vapor pressure of sea water at 20C given that the vapor pressure of pure water is 2.338 kPa at that temperature and
1. 2 answers
2. 1,596 views
Two very small spheres are initially neutral and separated by a distance of 0.50 m. Suppose that 2.50 x 10^13 electrons are
1. 3 answers
2. 1,882 views
If h(t) represents the height of an object above ground level at time t and h(t) is given by h(t) = −16t2 + 96t + 1,find the
1. 1 answer
2. 738 views
If m<PQR=(10x-7),m<RQT=5x, and m<PQT=(4x=6)
1. 1 answer
2. 541 views
What is the molecular, ionic and net ionic formula for Acetic acid and sodium nitrateMolecular: Ionic: Net Ionic:
1. 0 answers
2. 555 views
A child throws a ball with an initial speed of 8 m/s at an angle of 40 degrees above the horizontal. The ball leaves her hand 1
1. 3 answers
2. 3,853 views
A mixture contains only NaCl and Al2(SO4)3. A 1.45-g sample of the mixture is dissolved in water and an excess of NaOH is added,
1. 3 answers
2. 6,016 views
Mary needs to row her boat across a 120 m -wide river that is flowing to the east at a speed of 1.4 m/s. Mary can row the boat
1. 1 answer
2. 2,238 views
How many moles of H2 can be produced from 7.74g SrH2? equation:SrH2 + 2H2O = Sr(OH)2 + 2H2
1. 1 answer
2. 520 views
Calculate the pressure exerted by 1.0 mol C2H6 behaving as a perfect gas
1. 1 answer
2. 876 views
If h(t) represents the height of an object above ground level at time t and h(t) is given by h(t)=-16t2+11t+1 find the height of
1. 1 answer
2. 1,782 views
Let F(s)=5s2+5s+4 . Find a value of d greater than 0 such that the average rate of change of F(s) from 0 to d equals the
1. 2 answers
2. 2,682 views
I am really having trouble answering this question, can someone help?A binary compound between an unknown element E and hydrogen
1. 1 answer
2. 3,580 views
Fungal laccase, a blue protein found in wood-rotting fungi, is 0.390% Cu by mass. If a fungal laccase molecule contains four
1. 4 answers
2. 2,435 views
Consider equation 3A+B=C+D. You react 4 moles of A with 2 moles of B. Which of the following is true?1) Limiting reactant (L.R.)
1. 1 answer
2. 630 views
Consider equation 3A+B=C+D. You react 4 moles of A with 2 moles of B. Which of the following is true?1) L.R. is one with higher
1. 2 answers
2. 1,083 views
x to the 2nd power if x = 3/4 how do you find 3/4th to the 2nd power? 3/4th times 3/4th right? so the answer would be 9/16ths..
1. 3 answers
2. 1,267 views
You drove 2695 miles in 35 hours.(1) What is your average rate of change? (2) Suppose you can drive that distance at a legal 75
1. 0 answers
2. 570 views
a student writes 5y.3 to model the relationship the sum of 5y and 3.explain the error
1. 1 answer
2. 544 views
How do you do a division problem?
1. 1 answer
2. 531 views
The Acme Candy Company claims that 60% of the jawbreakers it produces weigh more than .4 ounces. Suppose that 800 jawbreakers
1. 0 answers
2. 810 views
Write the chemical formulas for the compounds containing each of the following: a) one calcium atom for every two iodide atoms.
1. 1 answer
2. 2,694 views
Write the chemical formulas for the compounds containing each of the following: a) one calcium atom for every two iodide atoms.
1. 1 answer
2. 710 views
Using the major League Baseball Data set available through the "Data Sets" lin in the materials section, answer the research
1. 0 answers
2. 1,079 views
A stack of $10 bills is worth $90 billion dollars. What is the height of the stack in kilometers? Assume each bill is .2
1. 1 answer
2. 680 views
If neons atomic number is 10 how many electrons are in the outer energy level?
1. 0 answers
2. 660 views
An actuary at an insurance company estimates from exsiting data that on a $1000 policy an average 1 and 100 policyholders will
1. 0 answers
2. 523 views
An actuary at an insurance company estimates from exsiting data that on a $1000 policy an average 1 and 100 policyholders will
1. 0 answers
2. 588 views
What geographic features might create differences in France's and Germany's economies?
1. 2 answers
2. 485 views
A pan of cold water with a temeprature of 35 degrees F is brought into a room with a temperature of 75 degrees F. After one
1. 0 answers
2. 1,316 views
if sodium iodoacetate is used instead of sodium chloroacetate, how will the rate of reaction be affected? explain.
1. 2 answers
2. 422 views
When 2-methyl-2-butene is bubbled into dilute sulfuric acid at room temperature, it appears to dissolve. what new substance has
1. 1 answer
2. 477 views
Calculate the electrical voltage of an electrochemical cell using Pb(s) andCo(s) as electrodes along with their appropriate
1. 1 answer
2. 1,155 views
What does it mean to have a percent yield over 100?
1. 1 answer
2. 365 views
Neurologists involved in animal research studies of cognitive function see analogies in humans that suggest mental exercise
1. 0 answers
2. 593 views
write the sum using summation notation1+6+13+22+33
1. 1 answer
2. 476 views
What is the difference between domain and range? Describe a real-life situation that could be modeled by a function
1. 1 answer
2. 727 views
What is the difference between domain and range? Describe a real-life situation that could be modeled by a function
1. 1 answer
2. 1,027 views
What is the difference between domain and range? Describe a real-life situation that could be modeled by a function
1. 1 answer
2. 538 views
-16x+y=3
1. 1 answer
2. 285 views
Your company is planning to spend no less than $80,000 and no more than $100,000 on a landscaping project, which will be used as
1. 1 answer
2. 539 views
6. Morris Company has wages of $800,000, federal withholding is 25%, state withholding is 3.4%, and FICA withholding is 7.65%.
1. 0 answers
2. 425 views
Find the area under the standard normal curve to the right of z = -1.25.
1. 3 answers
2. 9,685 views
A 55 kg ice skater is at rest on a flat skating rink. A 198 N horizontal forceis needed to set the skater in motion.However,
1. 5 answers
2. 10,623 views
A 6.0 kg object undergoes an acceleration of 2.0 m/s2.a. What is the magnitude of the net force acting on the object?b. If this
1. 1 answer
2. 7,243 views
You have a stock solution of 15.0 M NH3 . How many milliliters of this solution should you dilute to make 1200ml of 0.280 M NH3?
1. 1 answer
2. 1,008 views
You have a stock solution of 15.0 M NH3 . How many milliliters of this solution should you dilute to make 1200ml of 0.280 M NH3
1. 1 answer
2. 804 views
A soccer ball kicked with a force of 13.5 N accelerates at 6.5 m/s2 to theright.What is the mass of the ball
1. 2 answers
2. 1,677 views
Is potassium citrate ionic compound or molecular compound?
1. 1 answer
2. 3,178 views
How does the writing process you read about differ from the process you have used in the past? Wheich steop in the writing
1. 1 answer
2. 1,050 views
Marcella and Rupert bought party stuff. Marcella bought 3 packs of ballooons and 4 packs of favors for a total of $14.63. Rupert
1. 1 answer
2. 1,006 views
What are some of the significant committees in the House and the Senate.
1. 1 answer
2. 473 views
prepare a brief, with the aid of diagrams how can knowledge of returns to variable inputs assist in decision-making in business
1. 4 answers
2. 563 views
simplify:(p^-4+m p^2m)^-4 ________________ (p^-4)^-m
1. 0 answers
2. 320 views
identify and describe three causes for the increasing costs of health care. What impact does each of these causes have on
1. 1 answer
2. 576 views
Solve by applying the counting principal. When using a four number PIN, how many different PINs are possible? a*b*c=___I need
1. 1 answer
2. 392 views
Source 1 Title and Citation: Individuals can help reduce child abuse and neglect. Source Citation:Information, National
1. 1 answer
2. 602 views
i have a question. my research paper is on the jacksonian era what would my thesis be because the paper contains many different
1. 1 answer
2. 429 views
Im working on my outline for my research paper which is the Jacksonian Era. One of my categories is the election of 1824. What
1. 1 answer
2. 567 views
how do you put 0.965/10,000 in lowest terms WITHOUT a calculator?Thanks
1. 1 answer
2. 355 views
write fraction as percent, 23/4write percent in lowest fraction form, 60% 99% = 49.5/50? steps please...
1. 3 answers
2. 556 views
can germinated then boiled seeds perform aerobic cellular respiration? why? can live germinating pea seeds perform aerobic
1. 1 answer
2. 519 views
bio 1003 lab notes baruchExperimental setup 1 contains live, germinating pea seeds. Experimental setup 2 contains germinated
1. 0 answers
2. 739 views
x2+2x-35/2x3-3x2*4x3-9x/7x-49
1. 1 answer
2. 450 views
450m/s to mi/h?1km/1000m*1mi/1.690km = 3600 sec/1m 1617.3976mi/h?
1. 1 answer
2. 483 views
convert: 450m/s to m/h? please show exact steps
1. 3 answers
2. 3,285 views
Can some one please help me I'm stuck in this question.Why does a regular pentagon not tessellate the plane?
1. 2 answers
2. 564 views
simplify radicalsqrt a^10
1. 1 answer
2. 311 views
Simplify each expression. Assume all variables representnonzero real numbers. -40^0- 30^0
1. 1 answer
2. 844 views
Sharing cost. The members of a flying club plan to shareequally the cost of a $200,000 airplane. The members want to find five
1. 2 answers
2. 776 views
Simplify each radical expression. Assume all variablesrepresent positive real numbers �ãa^10
1. 2 answers
2. 1,794 views
©ø¡î-27= 9¡î-3 is this correct
1. 2 answers
2. 287 views
Simplify each expression. Assume all variables representnonzero real numbers. -40^0- 30^0
1. 2 answers
2. 612 views
Sharing cost. The members of a flying club plan to shareequally the cost of a $200,000 airplane. The members want to find five
1. 1 answer
2. 1,248 views
Solve equation using quadratic formulax^2+4x+3=0 is answer 3,1 ?
1. 4 answers
2. 520 views
Solve equation by using the quadratic formula-3x2-2x-5=0
1. 1 answer
2. 553 views

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