# Posts by ellen

Total # Posts: 227

**english**

Hello! Is this good thesis? How can I make it better? I would recommend this novel to other readers because it is mysterious, appeals through emotions, but hard to understand some of the context. Thank you.

**Chemistry 30 **

How do i do this question?? A 10.00ml Sample was taken from a 2Liter Container of Tropicana Orange juice. This sample was analyzed for its citric acid content by titration with a known 0.1112M NaOH base solution. A Phenoolphthalein indicator was added to detect the endpoint ...

**maths fractions**

Marian had some pie. She ate ¼ of the pie. Now there is 1/3 left. How much pie did she originally have?

**Science**

Some people prefer to use herbal medicines how will you know if they actually work? Thanks.

**Science**

What damage to the environment can the use of plant hormones cause? Thanks.

**Business**

whats is in their decision making process(How Gerber Used a Decision Tree in Strategic Decision-Making), can someone explain it to me because i don't get it. I'm going to need it for my assignment which is to Present and Give Observation on a Sample Decision-Making ...

**Math**

The area of a rectangle is 222 sq feet. What is the length of its sides?

**Chemistry - acids & bases**

Thank you so much! That makes sense.

**Chemistry - acids & bases**

4. Calculate the pH of each of the solutions and the change in pH to 0.01 pH units caused by adding 10.0 mL of 2.37-M HCl to 320. mL of each of the following solutions. Change is defined as final minus initial, so if the pH drops upon mixing the change is negative. c) 0.115 M ...

**History**

Which of the following best describes a long-term political effect of the civil rights movement? A. The Democratic Party lost most of its support among white southern voters. B. African Americans came to dominate state legislatures across the South. C. Congress passed a series...

**math**

The ratio for red and blue skittles is 3:5. There are 20 more blue skittles. how many red skittles are there?

**Biochem**

Using stocks of 0.1 M KH2PO4 and 0.1 M K2HPO4 how much 0.1 M K2HPO4 is needed to prepare 20 mL of a buffer solution at pH 7.2. The pKa of phosphate is 6.82. I know to solve for the ratio using henderson hasselbach but im lots after that! 5.2=6.82+log(A/HA) 1.0024HA=A

**math**

which property is illustrated by the equation 5/6(-11)=-11(5/8)

**Math**

15. If it's correct. Thanks for the biggest help

**Math**

What's the median average of mark makes 10% of 100=10, Lindsay makes 5% of 400=15, and kelly makes 15% of 100

**Math**

Mark makes 10% of 100, Lindsay makes 5% of 400, Kelly makes 15% of 100, what's the median average?

**Math**

What is the unit rate of drink 4/5 L in 1/4 hour

**Chemistry**

To completely react 17g of barium hydroxide, how many grams of hydrochloric acid is needed?

**math**

Solve the volume of a cylinder with diameter (4 +2x)m, height (5x+1)m v=pi [(4+2x) x (5x+1)]

**Math**

S working on answer.

**Math HELP**

Just plug in the 1.5 as the x value, that's what f(x) means. Whenever there is a number within the brackets, it counts as the x value.

**1 Science Question Unanswered**

OH! Thank you, thank you, thank you! You are truly the BEST Oscar! Thanks! ( ) (

**1 Science Question Unanswered**

Okay... I got all the answers. Thanks for the helps anyways. :( I just at least need one help. 1. In plants, sexual reproduction occurs when sperm and egg unite to form a... a. gamete b. gametophyte c. sporophyte d. zygote Is it a or d?

**Science**

Wait, hold on. 4 is b.

**I'M DESPERATE!!!**

Hel-lo?

**Science**

Hello? It's me.

**Science**

1. In plants, sexual reproduction occurs when sperm and egg unite to form a... a. gamete b. gametophyte c. sporophyte d. zygote Is it d? 2. A plant continues to grow throughout its life through the use of s a process called... a. alternation of generations b. photosynthesis c...

**Science**

1. In plants, sexual reproduction occurs when sperm and egg unite to form a... a. gamete b. gametophyte c. sporophyte d. zygote Is it d? 2. A plant continues to grow throughout its life through the use of s a process called... a. alternation of generations b. photosynthesis c...

**Physics**

A 1000Kg car is traveling at 40 m/s. a.) if the car stops in 20 seconds, what is the deceleration rate? b.) what friction force will stop the car in 20 seconds?

**Mathstatistics**

For example is this considered to be appropriate selected statistical test "(50)equal -0.45,p positive .50?

**Math**

The weight of a person and his luggage should not be greater than 150kg when travelling; (i) If the weight of the laggugge is W and that of a person is 70kg. write an inequality to represent this information (ii) Solf the inequality to find the range of the weight of the lagguge

**Chemistry**

A) -24.8kJ B)0 C) ?

**speech**

traditional african mariage is an advantage for men only,not women?

**Chemistry**

2Mg(s) + O2(g) 2MgO(s) If 9.92 g of Mg reacts with 8.52 g of O2. How many grams of MgO could be produced? I am just very confused and need an answer so that I can look back on how you got there . . .

**English**

Examples of letters to the person you picked (on the draw lots)

**physics**

a compound consist of carbon,hydrogen and oxygen only.the percentage by mass are carbon 40.0% and 6,7% hydrogen.calculate the empirical formulae

**Chemistry**

35.4m is not correct

**Chemistry**

35.4m

**Calculus**

The following table shows the percentage of the U.S. Discretionary Budget allocated to education in 2003, 2005, and 2009 (t=0 represents 2000) Year t 3 5 9 Percentage p(t) 6.8 7 6.2 (a) Compute and interpret the average rate of change of P(t) (b) Over the period 2003-2009 (...

**Mathstatistics**

I am stuck, I do not know where to start in answering or how to answer appropriate for the selected statistical test?

**Chemistry**

How would you write the net ionic equation for [Co (en) 2Cl2]Cl with AgNO3. Is it AgNO3 ----> Cl^- + 3Ag^+?

**math**

what percentage more is 2200 than 1725.

**Math**

|3x+1|-|2-x|<3

**chemistry**

The Henry's law constant for CO2 at 20°C is 3.7*10^-2 M/atm. What mass of CO2 (in grams) is present in 355 mL of soda drink if the pressure of CO2 in the can is 2.5 atmospheres at 20°C? (Assume the solubility of CO2 in the soda is the same as water)

**SAT prep help**

if -2x+5=2-(5-2x), what is the value of x?

**Chemistry**

Write the total and net ionic equations for the following molecular reaction: HgNO3 (aq) + NaCl (aq) -> HgCl (s) + 2 NaNO3 (aq)

**math**

Gail and 3 friends all share 1/2 a pie. All the pieces in pie put together make up 180 degrees. Gail and friends finish the pie and each eat an equal piece. They believe each piece has an angle of 25 degrees. Are they right?

**English**

what part of speech is new nation, concieved in liberty and dedicated to the proposition that all men are created equal/

**mental health counseling**

in multiple ways

**chemistry**

How many grams of I2 are present in a solution if 33.75mL of 0.140M Na2S2O3 solution is needed to titrate the I2solution?

**math**

A t-shirt manufacturer uses 5/8 yard of material for each shirt, how many shirts can be made fro 14 & 38 yards of material?

**math 15**

find the minimum height above the surface of the earth so that the pilot at point a can see an object on the horizon at c 125 miles away. assume the diameter of the earth to be 8000 miles.

**Math Trig Find Quadrant I II III IV**

to Fred: sinx=2sinx+1 0=2sinx+1-sinx 0=sinx+1 sinx=-1 We are going to look for the values of x. sin is < 0 meaning, the values are either in quadrant III/ IV. First, identify the rad equivalent where sin equates to -1. And that would be 270 degrees or 3pi/2 located at the ...

**Macroeconomics**

If the government imposes a price ceiling of $100 on a market, what would happen in the market as a result of protests of price gauging by the sellers? What would happen to the price and quantity in the market?

**College Algebra**

I need help in answering this problem,16 ------ . 3 39 ------ 10 to the lowest term

**Pre Calc 12**

Four consecutive integers have a product of 360 Find the integers by writing a plynomial equation that represents the integers and then solving algebraically.

**Pre Calculus**

mx3-nx2+5x-1 is divided by x-2 the remainder is -39. When divided by x-1 the remainder is 3. What are the values of m and n. Didn't know how to do the superscript for mx3

**chemistry**

thanks steve :)

**chemistry**

how many molecules are present in 1.2 mol of glucose, C6H12O6?

**science**

What does chlorophyll do for plants?

**literature**

What are the major events in Act I of A Doll's House?

**Algebra**

Solve using set builder notation, show all work. 12x-25 is greater than or = to 3x-5(x+6)

**math**

A square is made up of section A and section B. Section A is 500 sq. ft. and section B is 750 sq. ft. What percent of the square is section A? *

**math help**

Universal instruments found that the monthly demand for its new line of Galaxy Home Computers t months after placing the line on the market was given by D(t) = 2900 − 2300e−0.08t (t > 0) Graph this function and answer the following questions. (a) What is the ...

**math help**

determine the intervals where f(x) = e^((-x^2)/2) is increasing and where it is decreasing

**algebra**

What is the answer for 4.(5)(5)-35+21-(-3)(-3)(-3)

**Inverse Functions**

Given that g is the inverse function of f, and f(3)=4, and f'(3)=5, then g'(4)= ?

**math**

thank you for your help

**math**

The call letter of a radio station must have 4 letters.The first letter must be a K or a W. How many different station call letters can be made if repetitions are not allowed? *(If repetitions are allowed?)* *Important

**math**

The call letter of a radio station must have 4 letters.The first letter must be a K or a W. How many different station call setters can be made if repetitions are not allowed? If repetitions are allowed? I have the answers just need to know the work

**biology**

what all do i need to know for GCSE biology my teacher is absolutely rubbish i tried websites but i don't find them helpful thankyou

**Chemistry**

The formaldehyde content of a pesticide preparation was determined by weighing 0.3124g of the liquid sample into a flask containing 50.0mL of 0.0996M NaOH and 50mL of 3% H2O2. Upon heating, the following reaction took place: OH- + HCHO + H2O2 -> HCOO- + 2H2O After cooling, ...

**Chemistry**

A 25.00mL sample of a household cleaning solution was diluted to 250.0mL in a volumetric flask. A 50.00mL aliquot of this solution required 40.38mL of 0.2506 M HCl to reach a bromocresol green end point. Calculate the weight/volume percentage of NH3 in the sample. (Assume that...

**Chemistry**

What is the likely source of error from reading a graph where the absorbance (y-axis) versus concentration (x-axis) shows non-deal behaviour. The graph is going in what looks like a line of best fit but then curves off a the end. At the end of the graph there is a curve and it...

**Spanish-SraJMcGinthank you**

Thank you so much for explaining it-I think I got it this time.

**Spanish-SraJMcGin please help ?**

I'm so confused with these-please check them. ¿Estudias algo los sábados? No, no estudio nada los sábados.Do I need the no, no or just one no, estudio? ¿Hablas a francés a veces? No, no hablo nunca a francés. Once again, do I need ...

**Spanish-Check please! I need help**

Please check-I'm having a problem interpreting these questions and I have to answer them for homework. Could you please check my translation I'm not sure what these questions mean and I have to answer them for homework ¿Qué necesitas para comer en cereal?...

**Spanish-Thank you both for assisting-I really appreciate it-**

Thank you both for helping I appreciate it - I rechecked the first question-I copied it exactly as it was written so I'll just answer it as if I need a bowl, spoon, etc. Thank you again.

**Spanish-Help Please**

Thank you for doing that-I'm stuck on these questions

**Spanish-Help Please**

I'm not sure what these questions mean and I have to answer them for homework ¿Qué necesitas para comer en cereal?does this ask what I need to eat cereal-like a spoon , bowl etc? 2. ¿Qué ríes mucho cuándo miras a los payasos?Do you...

**Spanish-Please check answers**

Thank you for the corrections- I always forget that "a"

**Spanish-Please check answers**

Thanks alot-I really appreciate it Ms. Sue

**Spanish-Please check answers**

Él no va nunca.He never goes Él ve alguien.He sees someone. Él no ve nadie.He doesn’t see anyone.

**spanish**

Ellos vienen a despedirse esta noche. Daniel see esta afeitando. Patricia value a powers may contenta. Roberta see esta quitando last chaqueta. Los nines van and laver see last manos.

**Physics**

Consider a frictionless track as shown in the figure below. A block of mass m1 = 5.75 kg is released from A. It makes a head on elastic collision at B with a block of mass m2 = 8.00 kg that is initially at rest. Calculate the maximum height to which m1 rises after the ...

**uncc**

the half-life of 234U, uranium-234, is 2.52 x 10^5yr. If 98.5% of thee uranium in the original sample is present, what length of time (to the nearest thousand years) has elasped

**Chemistry**

Calculate the pH of a 0.10 M NaHX salt solution. Ka (H2X) = 2.1 x 10-2 Ka (HX-) = 4.5 x 10-8 Can someone explain the steps to do this please?

**physics**

A projectile is fired straight up at a speed of 15 m/s. How long does it take to reach the top of its motion? The acceleration of gravity is 9.8 m/s2 .

**physics**

A projectile is fired straight up at a speed of 15 m/s. How long does it take to reach the top of its motion? The acceleration of gravity is 9.8 m/s2 .

**calculus**

find all points at which the tangent line to the graph of y=x3 is parallel to the line y=27x+5

**Physics**

Two objects attract each other gravitationally with a force of 2.9 10-10 N when they are 0.29 m apart. Their total mass is 4.0 kg. Find their individual masses.

**science**

One of the characters Mendel studied was the position of the flowers. He crossed plants that had flowers at the tips of the stems with plants that had flowers along the sides. He allowed the F1 plants, which had flowers along the sides, to self-fertilize. In the F2 generation...

**science**

A segment of double-stranded DNA contains 31% Adenine (A) bases. a. What are the percentages of the other three bases in the DNA segment? (Count bases on both strands.) C: T: G:

**science**

There are about 300,000,000 US citizens. If we wanted to assign each person a unique identifier, using DNA sequences, how long a DNA sequence would we need? (Here’s another way of phrasing the question: How many bases of DNA are required for there to be at least 300 ...

**Math**

The measure of one angle in a linear pair is 30 more than twice the measure of the other angle. Find the measure of the angles. (I really need help! Thanks)

**chemistry**

A glass apparatus contains 26.223 g of water when filled at 25 °C. At this temperature, water has a density of 0.99704 g/mL. What is the volume of this apparatus?

**chemistry**

A glass apparatus contains 26.223 g of water when filled at 25 °C. At this temperature, water has a density of 0.99704 g/mL. What is the volume of this apparatus?

**chemersty**

Calculate the value of the following in exponential form, using standard scientific or "e" notation (for example, 105 = 1.05e2). Enter your answer with the correct number of significant figures. 885.75 g + 10.151 g - 25.50 g

**Maths**

Stuck! Help! 2.5 cubed? Xxxxx

**math**

in a distribution of 160 values with a mean of 72,at least 120 fall within the interval 67-77. approximately what percentage of values should fall in the interval 62-82? use chebyshev's formula.