# Posts by Lisa

Total # Posts: 3,433

**Math**

Write the slope intercept equation for the line that passes through (14,-2) and is perpendicular to 7x-10y=18

**College Chemistry**

I DO NOT understand the following! Please HELP :) 1st Part Substances A, B, and C can all act as oxidizing agents. In solution, A is green, B is yellow, and C is red. In the reactions in which they participate, they are reduced to A-, B-, and C- ions, all of which are ...

**College Chemistry**

Substances A, B, and C can all act as oxidizing agents. In solution, A is green, B is yellow, and C is red. In the reactions in which they participate, they are reduced to A-, B-, and C- ions, all of which are colorless. When a solution of C is mixed with one containing A- ...

**Physics**

change in pressure=density*length*gravity

**anatomy and physiology**

When you swallow a peanut, the peanut first comes in contact with the?

**anatomy and physiology**

what cellular process involves mitosis?

**teacher aide**

still need help..

**Chemistry**

What mass of H2O is required to form 1.2 L of O2 at a temperature of 310 K and a pressure of 0.950 atm? 2H2O (l) ---> 2H (g) + O2 (g)

**math**

What is the time to double when the initial investment is $1000 and the annual rate is 3.5%

**Chemistry**

A gas mixture with a total pressure of 750 mmHg contains each of the following gases at the indicated partial pressures: , 265 mmHg; Ar 134 mmHg; and ,O2 157 mmHg; The mixture also contains helium gas.

**Chemistry**

A weather balloon is inflated to a volume of 29.6 L at a pressure of 734 mmHg and a temperature of 27.0 C. The balloon rises in the atmosphere to an altitude, where the pressure is 360 mmHg and the temperature is -13.6 C.

**Managerial Accounting**

What is your view of the business economics of the Thoroughbred Horse Industry? What are the risk? How should the industry measure success?

**Business Communications**

anyone else have an opinion please?

**Business Communications**

ok i dnt think A wold be correrct is because in my textbook it says that sentence implies both that your message did not answer all questions and the reader will hestiate to contact you and that its negative

**Business Communications**

ok i would think its C because its a new client and would want to provide all the positive aspects to the client so that he/she would not regret their decision of being apart of the organization

**Business Communications**

Which is an effective strategy for ending an informative letter to a new client? (Points: 5) Stress that the reader is welcome to call you anytime if more information is needed. Refer to your company's future relationship with the reader's organization. Mention your ...

**Business Communications**

Which of the following statements about how the standard pattern for informative and positive messages should be applied is essential? Use all five of the elements of the basic organizational pattern. Present each element in a separate paragraph of its own. Present the ...

**Business Communications**

thanks you very much

**Business Communications**

Which statement presents a negative element in a positive way? (Points: 5) The part can be replaced at no charge only if your unit is less than two years old. If your unit is too old, you will have to pay $49 for a replacement part. We cannot replace the part for free on those...

**anatomy and physiology**

Which one of the following is an example of epithelial tissue?

**Chemistry**

How much heat, in kilojoules, is associated with the production of 273kg of slaked lime, Ca(OH)2? CaO(s)+H2O(l)-->Ca(OH)2(s) delta H=-65.2kJ

**Chem**

formation enthalpy of ethane -> –83.8 kJ/mol formation enthalpy of water -> −291.83 kJ/mol formation enthalpy of ethanol -> –277.7 kJ/mol I got 97.93 and got it wrong I only have one try left. I don't know whats wrong.

**Physics**

Two identical metal plates with small holes are aligned a distance L=7.2 cm apart. They have a potential difference of 141 Volts. An electron can enter through the hole in the negative plate and exit through the hole in the positive plate. If it enters with a velocity of 3680 ...

**Accounting**

Attached is the actual Financial Statements, Cash Flow, and Taxes associated with the assignment questions below. 2007 & 2008 statements below. We are working on a comprehensive/spreadsheet problem (financial statements, cash flow and taxes). A balance sheet for a company ...

**Chemistry**

thank you so much. I needed a mind referesher ;-)

**Chemistry**

For the reaction shown, compute the theoretical yield of the product (in grams) Ti(s)+2Fe(g) = TiF2(s) 6.0 g Ti, 6.0g F2

**Chemistry**

thank you .38 M is right

**Chemistry**

now i got a different answer .38 M

**Chemistry**

so would the answere be .43 M in two significant figures?

**Chemistry**

If 4.0 L of a 4.8 M SrCl2 solution is diluted to 50 L , what is the molarity of the diluted solution?

**Chemistry**

A chemist wants to make 4.5 L of a 0.310 M CaCl2 solution what mass of CaCl2 (in g) should the chemist use

**Physics**

An electron travels at a speed of 1.0×104 through a uniform magnetic field whose magnitude is 1.2×10−3 . What is the magnitude of the magnetic force on the electron if its velocity and the magnetic field are perpendicular?

**Chemistry**

If 4.0 L of a 4.8 M SrCl2 solution is diluted to 50 L , what is the molarity of the diluted solution?

**Physics**

Calculate the radial acceleration of an object on the ground at the earth's equator in m/s2, turning with the planet.

**Medical English essay**

I have the same exact questions to answer and in same format. how do i come up with my own version?

**Chemistry**

NaI(aq)+Hg(C2H3O2)2(aq) complete and balance complete equation

**Chemistry**

Give your answer as an ordered set of numbers , , , ... Use the least possible integers for the coeffiients Consider the following unbalanced equation for the neutralization of acetic acid: HC2H3O2(aq)+Ba(OH)2(aq)=H2O(l)+ this has the werid sybols and I can not type it out for...

**Chemistry**

It's oksy i got the answer 7.4 mol Al Thank you, Maybe you can help me with the next question. :-)

**Chemistry**

4al(s)+3o2(g)---->2o3(g) limiting reactant 7.4 mol Al or 6.5 mol O2

**physics**

A force of 5.00 N to the left causes a 1.35 kg book to have a net acceleration of 0.76 m/s2 to the left. What is the frictional force acting on the book?

**physics**

A girl pulls a sled along a level dirt road by means of a rope attached to the front of the sled. The mass of the sled is 40kg the coefficient of friction is. 600, and the angle between the rope and the road is 30 degrees. What pull must the girl exert to move the sled at ...

**Chemistry**

Write balanced complete ionic equation for HC2H3O2(aq) + K2CO3(aq)-----> H2O(l)+CO2(g)+KC2H3O2(aq) I put 2H+(aq)+2C2H3O2-2(aq)2K+(ag)+CO3-2(aq)------>H2O(l)+CO2(g)+2K+(aq)+C2H3O2-2(aq) and said it was wrong, but I got this part right. 2H+(aq)+CO3 2-(aq)----->H2O(l)+...

**Calc**

The area of a circular sinkhole increases at a rate of 420 square yards per day. How fast is the radius of the sinkhole growing when its radius is 50 yards?

**algebra**

PAM AND PAT HAVE $20 ALTOGETHER PAM HAS $4 MORE THAN PAT HOW MUCH MONEY DOES PAM HAS$

**Math**

find values for r and t such that the inequality r < S < t best describes s, the length of the third sides of a triangle for which the lengths of the other two sides are given. 11. 2 and 4 thanks for the help !

**geometry**

find values for r and t such that the inequality r < S < t best describes s, the length of the third sides of a triangle for which the lengths of the other two sides are given. 11. 2 and 4 thanks for the help !

**science**

the carrying capacity for a population is estimated at 500. the population size is currently 400 and r max is 0.01. what is dN/df?

**Science**

if the large piston of a hydraulic press has an area of 60"(squared), what will be the total force upon it if a pressure of 15 psi is produced by the small piston?

**Science**

assume the pressure is kept constant if the volume of a gas quadruples, how does the absolute temperature change?

**Science**

the small cylinder of a hydraulic press has an area of 2"(squared). If a force of 10# is applied to the small piston, how much is the pressure within the larger cylinder increased, according to pascal's principle.

**Chem**

A 11.9-g sample of a gas has a volume of 5.25L at 30 degrees celsius and 762mm Hg. If 2.4g of the same gas is added to this constant 5.25-L volume and the temperature raised to 64 degrees celsius, what is the new gas pressure?

**Physics**

An object of mass 1.25 kg on a flat surface has two forces acting on it, F1 and F2 in the horizantal direction. F1 acts in the positive direction, F2 acts in the negative direction. The magnitude of F1 is 26.75 N. The object moves strictly along the horizontal x-axis, which we...

**Chemistry**

i don't understand the question though.

**Chemistry**

What incorrect information is given by the formula MgOH2 instead of the correct formula, Mg(OH)2 ?

**Physics**

suppose that the net external force exerted on the car is 350 N parallel to the ground, and the mass of the car is 1800 kg. What is its acceleration?

**Physics**

suppose that the net external force exerted on the car is 350 N parallel to the ground, and the mass of the car is 1800 kg. What is its acceleration?

**preap physics**

velocity = 0 m/s acceleration = 9.8 m/s^2

**medical law and ethics**

You are a health care professional working in a large office. Your administrator has asked you to prepare a poster summarizing the public duties of the physician as specified by law. The poster will be set up in the waiting room and will have a heading "We commit to these...

**Physics**

A force F=180 N pulls a crate at a 60 degree angle on a rough surface. The weight of the crate is 296 N and the friction force between the crate and the surface is 90 N. What state of motion might the crate be in?

**Physics**

Suppose that the coefficient of kinetic friction of the rubber of a car tire and the street is Uk = 0.8. What is the deceleration of the car on a flat street if the driver brakes sharply, so all the wheels are locked and skidding?

**Physics**

A brick of mass 1.0 kg slides down an ice roof inclined at 30 degrees with respect to the horizantal. If the brick starts from rest, how fast is it moving when it reaches the edge of the roof 0.90s later? Ignore friction

**Statistics**

The standard deviation of GPAs (grade point averages) of all male students at a college is .35 and the standard deviation of GPAs of all female students at the same college is .34. Suppose we take one sample of 40 male students and another sample of 50 female students from ...

**Chemistry**

1. When a potassium atom reacts with a bromine atom, the bromine atom will a) lose 1 electron and form a positive ion b) lose 2 electrons and form a positive ion c) gain 1 electron and form a negative ion d) gain 2 electrons and form a negative ion I know its either C/D but im...

**chemistry**

How much of a 100mM solution do I need to add to a 2.5mM solution to make a solution with a final concentration of 10nM? Is there a formula for this? Please HELP!

**Orientalism**

I do not understand what Orientalism has to do with Arab and Muslim Americans. Can someone please explain

**math**

define standard form

**probability**

icrobes in a certain colony exposed to radiation have a 1/6 chance of being mutated. a. If ten microbes from the colony are sampled, what is the probability that at most 4 will be mutated? b. If microbe from the colony is examined one by one, what is the probability that the ...

**Physics**

Assume cathy has to drag her suitcase along the floor of the airport terminal by a rope. The rope makes a 40.0 degree angle with the horizantal. The suitcase has a mass of 36.0 kg and Cathy pulls on the rope with a force of 65.0 N. a) What is the magnitude of the normal force...

**probability**

Microbes in a certain colony exposed to radiation have a 1/6 chance of being mutated. a. If ten microbes from the colony are sampled, what is the probability that at most 4 will be mutated? b. If microbe from the colony is examined one by one, what is the probability that the ...

**Physics**

Assume cathy has to drag her suitcase along the floor of the airport terminal by a rope. The rope makes a 40.0 degree angle with the horizantal. The suitcase has a mass of 36.0 kg and Cathy pulls on the rope with a force of 65.0 N. a) What is the magnitude of the normal force ...

**Chemistry**

You receive two samples of a substance. After testing, it shows that one sample contains 88% oxygen by mass an 12% hydrogen. The second sample contains 94% oxygen and 6% hydrogen. Is it possible that the two samples are the same? Explain. thanks, I appreciate the help !

**Chemistry**

You receive two samples of a substance. After testing, it shows that one sample contains 88% oxygen by mass an 12% hydrogen. The second sample contains 94% oxygen and 6% hydrogen. Is it possible that the two samples are the same? Explain. thanks, I appreciate the help !

**Organic Chemistry - Melting Point**

You have an unknown with an observed melting point of 90-93°C. Is your unknown compound A with a reported melting point of 95.5-96°C or compound B with a reported melting point of 90.5-91°C? Explain.

**Chemistry**

NiF2(aq)+Fe2(SO4)3(aq) ==NiSO4 (aq) + FeF3 (s) balance each of the following chemical equations. Express your answer as a chemical equation. Identify all of the phases in your answer. Can help me refresh my memory ...

**probability**

A company's records indicate that on any given day, 1% of their day shift employees and 2% of the night shift employees will miss work. Sixty percent of the employees work the day shift. a. What percent of employees are absent on any given day? b. A randomly selected ...

**probabilityv**

A school's administrators are concerned about absenteeism at their school and the eect it has on students' grades. The following data were compiled, based on a sample of students. Student's Absent Medium Absent Grade Infrequently Absent Frequently Low 1 9 8 ...

**Chemistry**

thank you

**Chemistry**

Nitric acid is a component of acid rain that forms when gaseous nitrogen dioxide pollutant reacts with gaseous oxygen and liquid water to form aqueous nitric acid. Write a balanced chemical equation for this reaction. Express your answer as a chemical equation. Identify all of...

**Chemistry**

and I finaly got #1 it is Al2O3

**Chemistry**

I finaly got #2 it is K2O

**Chemistry**

Write a formula for the ionic compound that forms between each of the following pairs of elements. 1. aluminum and oxygen Express your answer as a chemical formula. AlO and Al2O3 and Al2O3 the 2 was the bottom right cornor and I got this message Use subscripts to represent the...

**Chemistry**

thank you so much you are awesome. ;-)

**Chemistry**

whoops Write a formula for the ionic compound that forms between each of the following pairs of elements

**Chemistry**

zink and sulfur Express your answer as a chemical formula. I entered Zn+2,S-2 and it said this to me There is an error in your submission. Make sure you have formatted it properly.

**Chemistry**

THANKS

**Chemistry**

i put 44.3x131.30=5.81659E3 that's the answer it got, so I put it in 3 significant figures. I guess I am really confuss

**Chemistry**

5.81 g is that right

**Chemistry**

What is the mass, in grams, of each of the following? 44.3 mol Xe

**Chemistry**

m= 4.90 g

**Chemistry**

3.57×10−2 mol Ba Express your answer using three significant figures

**3rd grade math**

8 times 493= 3944 using distributive property then solve with array showing the work

**5th grade/ Math**

Your Max (highest number) = 18 Your range is 13 so your minimum number in your set =5 You need the mean to = 12 so all twelve numbers in your set have to equal 144 so that the 12 individual numbers will have a mean of 12 (144/12=12). The mode = 7 - so 7 is going to occur more ...

**Math**

I have a few questions about T-Matrix. In excel, I am suppose to work with powered matrices to construct a weighted T matrix, using a scalar of .7. Does this mean I multiply each of the powered matrices by .7? Or do I power the powered matrices by .7? Or am I completely off ...

**english - thesis statement**

Based on the reading Wolf-Alice by Angela Carter I need to put together a thesis statement, regarding the development of self identity. Wolf-Alice is a feral child who lived with a pack of wolves. Group of nuns take her in to try to show her human ways (since she couldn't ...

**statistics**

Considering that a researcher can test at the <p = .05 (95%), p = .01 (99%), or p = .001 (99.9%) level for statistical significance, how do you use these three levels in relationship to evaluate risk to patients in implementing the decisions based on research findings?

**Algebra**

please show steps solve 9 - (9)squared > 10x - x

**Algebra**

-4 - 2n + 4n > 7 - 4

**Algebra**

Homework help please: algebra inequality 0.3 - 0.5n + 1 is greater than or equal to 0.4

**Physics**

A horse canters away from its trainer in a straight line, moving 120 m away in 11.0 s. It then turns abruptly and gallops halfway back in 4.9 s.

**English**

What would be good sentence for emerald?