# Posts by lane

Total # Posts: 45

**Chemistry**

A 14.7 mL sample of 0.0550 M KOH solution required 55.5 mL of aqueous acetic acid solution in a titration experiment. Calculate the molarity of the acetic acid solution.

**Chemistry**

By titration, 66.6 mL of aqueous H2SO4 neutralized 11.4 mL of 0.465 M LiOH solution. What was the molarity of the aqueous acid solution?

**check my work**

21.65

**Math/Science**

Calculate the minimum change in velocity (delta V or ∆V) required for the Space Shuttle to decrease its altitude to 60 miles if it’s orbiting with an apogee of 260 miles and a perigee of 220 miles above the surface of Earth.

**Physics**

It is friction that provides the force for a car to accelerate, so for high performance cars the factor that limits acceleration isn't the engine; it's the tires. For typical rubber-on-concrete friction, what is the shortest time in which a car coukd accelerate from 0 ...

**calculus**

Suppose that a particle moves along a line so that its velocity v at time t is given by this piecewise function: v(t)=5t if 0≤t<1 v(t)=6((t)^(1/2))-(1/t) if 1≤t where t is in seconds and v is in centimeters per second (cm/s). Estimate the time(s) at which the ...

**English**

Why does Shakespeare not tell us what started the family feud? Answer in complete sentences.

**physics**

Under what circumstances does a double convex lens produce an image that is reversed left to right?

**Pre-Calculus**

okay i put it wrong I'm sorry the question said Convert to the Alternate form (Exponential INTO logarithm)

**Pre-Calculus**

convert to the alternate form to exponential form. a) 5^4=625 b) e^x=y c) log.001=x I really need help on these problems i have no idea how to do it? pls help me i need to study for it on my exam.

**Math**

There are a total of 103 foreign language students in a high school where they offer Spanish, French, and German. There are 19 students who take at least 2 languages at once. If there are 38 Spanish students, 38 French students, and 46 German students, how many students take ...

**Math**

There are a total of 103 foreign language students in a high school where they offer Spanish, French, and German. There are 19 students who take at least 2 languages at once. If there are 38 Spanish students, 38 French students, and 46 German students, how many students take ...

**math**

l=2w-2 A=lw=(2w-2)(w)=2w^2-2w<26 2w^2-2w<26 2w^2-2w-26<0 -3.14005<w<4.14005, substitute in the first equation to find the value of l -8.2801<l<6.2801

**fractions**

1. Split three sandwiches three ways, 2. Split two sandwiches into fourth and leave one.

**math**

using approximation which is greater 31/130 or22/75

**algebra**

115=-5(1+4b)

**math**

Write the first 8 terms of the meometric sequence with first term 10 and common ratio 2I.

**earth**

Find the diameter of the earth. Then divide that measurement by the number of hours it takes for the satellite to go around the earth. divide that number by the number of your "8400" miles

**Piloting: stumped**

We are studying together and are wondering about some of the same things.

**Piloting: stumped**

What do I do when, after I have completed the testing and want to go on in my field and am stuck without knowledge because I hadn't learned the subject before. I have all of the materials and tools and have gone over it before but I can't seem to find the topic in my ...

**Ground School: Airport Operations**

I am taking a ground school class (a preliminary for a private pilot license)and am having trouble taking in all of the information involving memorizing terms, abbrieviations formulas and definitions. How do I get all of those facts and equations to stick in my head? How do I ...

**psychology**

the fundamental idea behind natural selection is that, within a particular environment, a genetically influenced trait tends to be more successful and thus able to survive and be passed on. Environmental psychologists examine the ________ that led to survival, and which then ...

**psychology**

the fundamental idea behind natural selection is that, within a particular environment, a genetically influenced trait tends to be more successful and thus able to survive and be passed on. Environmental psychologists examine the ________ that led to survival, and which then ...

**math**

Which board would be longer? A board that measured 33 cm or a board that measured 1/3 of a meter?

**Math**

Sam walked 15 ft. up a ramp and discovered he was 9 ft. above the ground. Pam walked an additional 20 ft. up the ramp. How far above the ground is she

**physics**

8s/9

**physics**

A,D

**geometry**

Right triangle ABC is similar to triangle XYZ, because angle B is congruent to angle Y. If side AB equals 15 inches, side BC equals 45 inches, and side YZ equals 9 inches, then what is the length of side XY?

**science**

______ weathering is a process by which softer,less weather resistent rocks are worn away leaving more weather resistant rocks exposed

**math**

how do i figue out how to do arrays and an expanded algorithm

**8th grade math**

Thank you so much.

**8th grade math**

What is 25% of $20.00. What is the total cost of the item? I multiplied 20 x .25 and my answer was 5.00 Then I subtracted 5.00 from 20.00 making my final answer $15.00 for the item. Please tell me if this is correct.

**7th grade**

What term was used to describe the trading of slaves and goods to and from three continents? Eight(8)letters

**Social Studies**

What term was used to describe the trade of slaves and goods to and from three continents

**Social Studies**

What term was used to describe the trade of slaves and goods to and from three continents

**spanish**

Thank you very much!

**spanish**

Complete each of the following sentences by writing the appropriate preterit or imperfect form of the indicated verb. BELOW THESE 43 QUESTIONS ARE MY ATTEMPT AT THE CORREECT ANSWERS. I JUST NEED THESE CORRECTED. PLEASE MARK ANY THAT ARE WRONG AND PROVIDE THE CORRECT ANSWER. 1...

**spanish**

"Cuando es la fiesta de Arturo" -When is Arturo's party? If you want to answer in spanish (don't know my accents) you would say: -La fiesta de Arturo es ________ And then write when it is.

**pre algebra**

32yd/min equal how many in/sec

**Science**

ello mate

**communication Technology**

Transmission - listening,thinking,searching

**CHemistry....Please double check DrBobb**

WHATS 3HO= 4HO

**Chemistry**

What is the weight/volume for a 0.2% solution?

**Economics**

what is sales tax? and what is it used for?

**Algebra II factoring**

I need help. i am having trouble factoring trinomials into binomials. an example problem is 4n^2-5n-6 can someone show me step by step how to factor these kind of problems easily? Take the coefficient of your quadratic term in this case 4 and multiply it by your constant term ...