June 26, 2016

Posts by Lo

Total # Posts: 72

The amount of energy required to remove an electron from the surface of Hg is 7.22x10^-19 J. What is the threshold frequency of mercury? I got 1.09*10^15 hz is it right?
June 21, 2016

Why must you weigh the beaker containing salt and water before dissolving the salt? Why would it be incorrect/inaccurate to obtain the total mass after dissolving the salt? Explain your answer. (We had to do to create different nacl salt concentration )
June 15, 2016

no you're not gonna fail with a 0% as your final you will get exactly 60 % calculation: (67.90)+(0.10)=60%
June 14, 2016

November 4, 2015

A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 550 mL of a solution that has a concentration of Na+ ions of 0.600 M ?
October 14, 2015

A box full of packets of biscuits each weighing 200 g weighs 12 1/2 kg.The empty box weighs 2 kg 500 g. calculate the number of packets of biscuits in the box.
September 20, 2015

A student government representative at a local university claims that 60% of all the undergraduate students favor a move to Division I in college football. A simple random sample of 250 undergraduate students is selected. What is the probability that the sample proportion ...
February 21, 2015

A student in the laboratory connects a 13 Ω resistor, a 24 Ω resistor, and a 41 Ω resistor in parallel and then connects the arrangement to a 43 V dc source. What is the current? What is the power? (in watts)
January 12, 2015

A quantity of steam (750 g) at 122°C is condensed, and the resulting water is frozen into ice at 0°C. How much heat was removed?
January 9, 2015

A quantity of steam (750 g) at 122°C is condensed, and the resulting water is frozen into ice at 0°C. How much heat was removed?
January 9, 2015

Determine the number of bonding electrons and the number of nonbonding electrons in the structure of SeCl2 and SiO2.
December 5, 2014

1.Calculate the density of oxygen, O2, under each of the following conditions: STP 1.00 atm and 20.0 ∘C 2.To identify a diatomic gas (X2), a researcher carried out the following experiment: She weighed an empty 4.3-L bulb, then filled it with the gas at 1.90atm and 20.0...
November 7, 2014

. A professor has RM 15000 to invest for one year, some are 8% and the rest are at 7% annual interest. If she will earn RM 1100 from these investments, how much did she invest at each rate?
June 15, 2014

Active and Passive Euthanasia by: James Rachels
March 6, 2014

Glaucon states that most people think that justice (Points : 1) Is only praised by good people. Is the lesser of two evils. Is the rule of the majority. Is the rule of the powerful.
March 6, 2014

Algebra 2
The volumes of two spheres differ by 336pi cubic meters and the lengths of their radii differ by 6 meters. Find the length of the radius of the smaller sphere. (Round your answer to the nearest hundredth)
March 5, 2014

phi208 Ethics and moral reasoning
What are some relativistic beliefs that you have or that you find in society? What are those ethical beliefs and how do people justify those beliefs? Using the articles from Mary Midgley and James Rachels, present a critique of those relativistic beliefs. What reasons do you ...
February 28, 2014

production. Describe at least two alternatives to oil that are currently available and discuss the barriers that keep these alternatives from replacing oil as our primary means of energy? Additionally, utilizing at least two scholarly or reputable resources and your textbook, ...
February 5, 2014

A sofa regularly sells for $510. The sale price is $423.30. Find the percent decrease of the sale price from the regular price.
October 13, 2013

A salesperson has January sales of $20,000 (1, $20,000) and April sales of $80,000 (4, $80,000). What is the rate of change?
June 9, 2013

Grammer Please Help!!
.)The Grand Canyon is one of the natural wonders of the world. Since 1908, it has been a U.S. national monument
May 2, 2013

7th grade math please check ASAP please!
December 5, 2012

Business math
To help consumers in this tough economic climate, Pikes Peak Harley-Davidson offered to finance a new motorcycle for qualifying customers at 13% down, 7.50% interest for 48 months during July 2009. Rich Martinez was interested in calculating what his monthly payment would be ...
November 18, 2012

1/3+2/3=1. You simply add the numbers on the top of the fraction. 1+5/3= 2and2/3 Since 3/3 = 1, 5/3 = 1+2/3 So 1+1+2/3=2and2/3
October 25, 2012

Below is the rule for calculating the velocity of a falling object. Use this rule to calculate the rate, expressed in feet per second, that a piano, dropped 3 seconds ago, is falling. V(t) = 32t A. 192 feet per second B. 288 feet per second C. 96 feet per second D. 3 feet per ...
October 10, 2012

what is the pressure dut to 30 m heght water column
August 3, 2012

What is the value of the focal length fn2 of a convergent lens with index of refraction ( n2 =1.5) if it was fn1 =5cm for an index of refraction n1 = 1.4 .
August 1, 2012

February 23, 2012

right triangle has an acute angle of 24.8 and an adjacent length of 145 what is the side opposite of the acute angle
February 14, 2012

December 8, 2011

This problem compares some energy properties of two motor vehicles: For efficient car, use drag coefficient of .21 and a cross sectional area of 1.5m^2. For a light truck, use drag coefficient of .75 and a cross sectional area of 2.7m^2. Use 1.25 kg/m^3 for the density of air...
November 8, 2011

physics : HELP PLEASE
first part the answer is 30 m. d= rt so distance = rate (3) times the time (10) so the distance is 30
November 8, 2011

what is not a function of specific rotation temperature concentration wavelength
November 3, 2011

mirror images
Can someone please explain what mirror images to me in simple terms.
October 15, 2011

College Algebra
October 9, 2011

I need help writting a discussion on why the follow paragraph is effective including variety and rhythum of the author's writing:Individuals can be denied credit for a number of reasons. Individuals who are near limits on existing cards, have too much outstanding debt or ...
September 16, 2011

mike wants to make meatloaf and the recipe calls for six pounds of meat if he uses a 3 to 1 ratio of beef to pork how much pork will he use
July 14, 2011

The enthalpy of combustion of carbon to carbon dioxide is -394 kJ according to the equation: C (s) + O2 (g) --> CO2 (g) How many kJ of heat are released when 24.0 g of carbon are burned in an excess of oxygen
June 11, 2011

A consumer buys n light bulbs, each of which has a lifetime that has a mean of 800 hours, a standard deviation of 100 hours, and a normal distribution. A light bulb is replaced by another as soon as it burns out. Assuming independence of the lifetimes, find the smallest n so ...
April 27, 2011

yea i really don't know so some1 plz answer! :( i hate homework
March 29, 2011

what would happen if a large amt of light colored dust was added to the atmosphere? dark black soot from fire?
March 29, 2011

Express y=[4x-x^3]/[3x^2+2)^2 as a product and then differentiate. Simplify your answer using positive exponents. Help Please! ty
March 5, 2011

Can someone please show me how to find the integral of sin squared x?
February 27, 2011

I am really stuck with this... what mass of oxygen is contained in 10.5 umol of chromium(III)nitrate hexahydrate? Can't understand how to convert the micro-moles especially!
February 22, 2011

MTH 157
The 99 employees in a factoryearn a salary of $35,000 per year, while the CEO makes $266,000 annually. What are the mean, median salaries for all 100 people? Is the mean or median the more appropriate measure of "center" in this case? Explain.
January 18, 2011

MTH 157
A box contains 3 blue cards numbered 1 through 3, and 4 green cards numbered 1 through 4. List the sample space of picking a blue card followed be a green card.
January 18, 2011

A small turbo-prop commuter airplane, starting from rest on a Tallahassee airport runway, accelerates for 21.0 s before taking off. Its speed at takeoff is 56.0 m/s (125 mi/hr). Calculate the acceleration of the plane, assuming it remains constant. Express your answer in g'...
January 9, 2011

The volume of an ideal gas is 2.06L at standard temperature and pressure. Calculate teh volume at 1.75atm and 27oC
December 6, 2010

Physics-Linear momentum
November 21, 2010

can someone check this answer i got. i got 37/250. two branches are republican and democrat. from republican two branches are favor and dislike. probability of being republican 40/100 and probability of favoring issue is 70/100 and disliking is 30/100 from democrat two ...
November 9, 2010

How do you make a tree diagram for this? (and in general) 1) of the voters in a certain city, 40% are republicans and 60% are democrats. among the republicans, 70% are in favor of a particular bond issue whereas 80% of the democrats favor the issue. if a voter is selected at ...
November 9, 2010

Physical Science
yeah that didn't help but thanks
October 18, 2010

Physical Science
A weight lifter cleans and jerks 150kg, lifting it 2m above the ground in 1.5s. What is his power output?
October 18, 2010

Physical Science
If you do 600J of work hoisting a 20kg bale of hay, to what height did you lift
October 18, 2010

chuck norris
September 20, 2010

physics - trans. line
A high-voltage transmission line with a resistance of 0.30 /km carries a current of 1040 A. The line is at a potential of 680 kV at the power station and carries the current to a city located 159 km from the station. (a) What is the power loss due to resistance in the line? b...
July 20, 2010

physics - charge
A 80.0 g block carrying a charge Q = 33.0 µC is connected to a spring for which k = 74.0 N/m. The block lies on a frictionless, horizontal surface and is immersed in a uniform electric field of magnitude E = 4.84 104 N/C directed away from the spring and block. The block...
July 10, 2010

physics - capacitors
Capacitors C1 = 5.0 µF and C2 = 2.0 µF are charged as a parallel combination across a 150 V battery. The capacitors are disconnected from the battery and from each other. They are then connected positive plate to negative plate and negative plate to positive plate...
July 10, 2010

Summarize the multi-factorial model and how it relates to the diagnosis of illnesses. • Select two health problems discussed in the text. • Explain what role psychology has played in understanding and managing these two health problems.
July 10, 2010

factor by grouping x^3-5x^2+5x-25
April 12, 2010

CRT 205
is the following argument valid, sound or stong and what is the reason/rationale: Too many seniors, disabled veterans, and families with children are paying far too much of their incomes for housing. Proposition 168 will help clear the way for affordable housing construction ...
March 30, 2010

Critical Thinking
Is the following passage valid/sound/strong arguments and what is the reasoning? If you want to see the best version of the three muskateers, try the 1948 version. Lana Turner is luscious, Vincent Price is dastardly; Angela Lansbury is exquisitely regal; and nobody ever has or...
March 29, 2010

solve. x(1 +2x) = (2x - 1)(x - 2)
January 24, 2010

;' ]
November 22, 2009

chaucer sounds like a modern day buisnessman. explain why
October 18, 2009

math 115 wk.7
its 9 kid. read your book. this is basic math.
June 23, 2009

dividing moniomials. 2 to the 2nd/2to the -3
March 8, 2009

November 6, 2007

A road perpendicular to a highway leads to a farmhouse located 8 mile away.An automobile travels past the farmhouse at a speed of 80 mph. How fast is the distance between the automobile and the farmhouse increasing when the automobile is 7 miles past the intersection of the ...
October 13, 2007

Stressed syllables
i dont know much about syllables, but when i find out i would love to help! i will try and find out soon hope u find out Lo xxxxxxxxxxxxxxxxxxxxxxxxxxx i will text back again with an answer!
February 19, 2007

December 23, 2006

Reference: F11061 Refer to the above diagrams, in which AD1 and AS1 are the "before" curves and AD2 and AS2 are the "after" curves. A recession is depicted by:
August 15, 2006

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