Thursday

April 24, 2014

April 24, 2014

Total # Posts: 150

**math**

Aspider travels at a speed of 1.17 miles per hour. At this rate, about how far can a spider travel in 3 hours?

**Chemistry Help**

using your method i got 0.45moles,is that correct?

**Chemistry Help**

If it takes three "breaths" to blow up a balloon to 1.2 L, and each breath supplies the balloon with 0.060 moles of exhaled air, how many moles of air are in a 3.0 L balloon? i am trying to use v1/n1=v2/n2 but i am stuck, can u help? thank you

**spanish 1**

durante el dia (pasar) tiempo con mis amigos, what would be the form for the subject

**Chemistry**

1. You have gone back in time and are working with Dalton on a table of relative masses. Following are his data: 0.602g gas A reacts with 0.295g gas B 0.172g gas B reacts with 0.401g gas C 0.320g gas A reacts with 0.374g gas C a) Assuming simplest formulas (AB,BC,AC) construct...

**Chem 101 science**

Rank the following samples in number of atoms from least to greatest. a) 2 mol of K atoms b) 48 g of S c) 27 g of Be d) 50 g of Na

**Chem 101. Science**

Rank the following samples in mass from least to greatest. a) 2 x 1023 S atoms b) 0.25 mol of Cu atoms c) 2 mol of N atoms d) 6 x 1023 Na atoms

**Chem 101**

Consider the reaction of 82.0 g of oxygen as follows: 4Fe + 3O2 2Fe2O3 How many moles of oxygen react? How many moles of iron must react? How many moles of product form? What mass of product forms?

**arithmetic**

An auditorium has 20 rows of seats.These are 20 seats in the first row,21 in the second row and 22 in the third row and so on.how many seats are there in all rows?

**MATH**

ADDING LITERS 1/2 , 3/4 AND 7/8 SOLUTION; 1/2=4/8, 3/4=6/8 AND 7/8 ANSWER? 14/8 PUZZLE!

**Grammar and Composition**

The poor children of the village were left destitute. look up the definition and you will see by the examples that this is the correct usage.

**Biology**

How does temperature affect the solubility of oxygen in water?

**physics**

find the resultant of vectors A of magnitude 10units in the direction N40E and B of magnitude 8units in the direction S30E

**economics**

Given that the monopolist demand curve is Qd=200-2P, TC=#900 and P= #55. What is the total profit?

**AP BIO**

If a particular experiment were known to have a transformation efficiency of 3 x 103 bacteria/ìg of DNA, how many transformant colonies would be expected to grow on the LB/amp/ara plate?

**business**

Which financial ratios would you consider most useful? Would these ratios be different than the ones you would consider useful as an investor? Why or why not?

**Science**

Why are spurgeons important to theie ecosystem?

**Financial Engineering**

Describe a potential arbitrage strategy if a put price is the same as the negative of a forward if the strike are the same. You need to specify the number of units you would long/short for each instrument, initial cash flow, and final cash flow. An arbitrage oppotunity arises ...

**Calculus**

A boat is pulled into a dock by a rope attached to the bow of the boat and passing through a pulley on the dock that is 1 m higher than the bow of the boat. If the rope is pulled in at a rate of 1.4 m/s, how fast is the boat approaching the dock when it is 9 m from the dock?

**Calculus**

A voltage V across a resistance R generates a current I=VR. If a constant voltage of 4 volts is put across a resistance that is increasing at a rate of 0.3 ohms per second when the resistance is 4 ohms, at what rate is the current changing? (Give units.)

**Calculus**

At noon, ship A is 20 nautical miles due west of ship B. Ship A is sailing west at 23 knots and ship B is sailing north at 17 knots. How fast (in knots) is the distance between the ships changing at 5 PM? (Note: 1 knot is a speed of 1 nautical mile per hour.)

**chem**

why does fluorine have a higher ionization energy than iodine?

**chem**

why do elements in the same family generally have similar properties?

**chem**

what does the heating curve of ethanol look like? im really confused about this...

**CHEM**

on a heating curve graph...what factors determine the lengths of the flat regions of the graph and slope of the curve between the flat regions

**French**

What can you find in Santa Claus' bag? descramble "ELASEL" (in french) I need help....

**s**

unscramble "elasel" in french; unscramble "ionmaes" in french. Thank you

**chem**

22.25 ml?

**chem**

3.56mL?

**chem**

What volume of 0.200 M H2SO4 will be needed to neutralize 50mL of 0.178 N NaOH? i don't even know how to start

**Social Studies**

When water sinks into the soil, what does it become?

**college(natural disasters)**

How can the magnatic record inside a valcanic roskbe used to determine the latitude at which the lava cooled?

**natural disasters**

how can the magnatic record inside a valcanic roskbe used to determine the latitude at which the lava cooled?

**English**

For example, when people ask "We don't have to hand in the assignment right?" Why do some people answer "No." (They meant the assignment does not have to be handed in.) But if so, should the answer be "Yes." (Yes, that's right, we don'...

**Math**

Dear Readers, I am a 6th grader that recently took a math test. I got a question wrong, and I think it was because I don't know the definition to the question. Can you please tell me what an interval in mathematical terms is. Please give me something a 6th grader can under...

**statistics**

Which of the following is an example of nominal data? a. ocean temperature at seven beaches along the east coast of the U. S. b. 1st, 2nd, and 3rd place finishers of the 2005 Boston Marathon c. morning commute (in miles) of professors at DeVry University - Phoenix d. account n...

**5th grade**

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**calculus**

Find the points on the curve y = 2x^3 + 3x^2 - 12x + 1 where the tangent is horizontal

**physics**

Alley club-ax consists of a symmetrical 8 kg stone attached to the end of a uniform 2.5 kg stick that is 98 cm long. The dimensions of the club-ax are that the stcik is 80 cm across and the stone is tied to the stick is 18 cm long. How far is the center of mass from the handle...

**physics**

Three balls A, B, and C, with masses of 3 kg, 1 kg, and 1 kg, respectively, are connected by massless rods. What are the coordinates of the center of mass?

**physics**

A water molecule consists of an oxygen atom and two hydrogen atoms. Oxygen has a mass of 16 atomic units (u) and each hydrogen has a mass of 1 u. The hydrogen atoms are each at an average distance of 96 pm ( 96 x 10 -12 m) from the oxygen atom, and are separated from one anoth...

**HISTORY**

what features of the welfare state did the new deal create?

**physics**

A pendulum consists of an object of mass 1.07 kg that hangs at the end of a massless bar, a distance 1.14 m from the pivot point. Calculate the magnitude of the torque due to gravity about the pivot point if the bar makes an angle of 22° with the vertical. torque = weightp...

**physics**

An athlete at the gym holds a 4.33 kg steel ball in his hand. His arm is 75.0 cm long and has a mass of 5.28 kg. What is the magnitude of the torque about his shoulder if he holds his arm straight out to his side, parallel to the floor? Responses Physics - bobpursley, Saturday...

**chemistry**

Phosgene (COCl2) is an extremely poisonous gas that was used extensively in World War I as a chemical warfare agent. At 300oC, phosgene decomposes to carbon monoxide and chlorine with a Kp = 6.8 x 10-2. Calculate the pressure in the vessel at equilibrium after placing 5.00 gra...

**HISTORY HELP**

I'm reading my book and from what i'm getting here is that the progressives demanded a more activist government but what im not understanding is how they justified their demands.

**Algebra**

Write the slope-intercept form of an equation for each line, given either the slope and the y-intercept or the coordinates of two points. (5, -3) and (-4, -3)

**Algebra**

Determine whether the graphs of the equations are parallel, perpendicular, or neither. y=-x+2 y=-x-3

**drug chart help**

Does anyone know a site that has information about drugs (narcotics, stimulants, depressants, hallucinogens, etc...) with the following info: Name of Drug Slang Name Source How it Looks How it's Used Short Effect Duration Physical (Yes/No) Psychological Addiction (Yes/No) ...

**physics**

A:0.124764 meter