# Aletha

Most popular questions and responses by Aletha-
## Chemistry

I am having trouble understanding dipole moments. I can't figure out why that a tetrahedral CF4 molecule, trigonal planar SO3 molecule and a octahedral H2SF4 molecule are non-polar while a H2CF2 is polar? I hope I explained that well and thanks! For CF4,

*asked on January 21, 2007* -
## Anatomy & Physiology

How do the gas laws (Daltons, Boyles and Henrys)apply to the respiratory processes? I will be happy to critique your thinking on this. I know Dalton's Law is the law of partial pressures, Boyle's law is the law for a fixed mass of ideal gas at fixed

*asked on March 21, 2007* -
## Physiology

DESCRIBE THE HUMAN CELLS AND HOW THEY HARVEST ENERGY (HOW WE DEAL WITH CARBS, LIPIDS AND PROTEINS.) Thanks!

*asked on February 23, 2007* -
## Chemistry

For the reaction: 5A + 3B -> 6C + D, the following data is found: Time________A 0.00s .775 M 5.00s .200 M Find the rate of disappearance of A, the overall rate of reaction, and the reates of disapperance and appearance of B, C, and D. The answers I got

*asked on February 21, 2007* -
## Calculus

A rocket is propelled from the top of a building 30 meters tall so that its height in meters (t) seconds after it is launched is presented by the function: h(t)= -9.8t2 + 45t + 30. 1)

*asked on February 5, 2007* -
## Chemistry

How many grams of NaCl (molar mass = 58.4 g/mole) must be added to 12.0 g of water (molar mass = 18.0 g/mole) so that Xwater = 0.725? My answer was 102.69 grams of NaCl. However my friend got 14.8 grams of NaCL. We are not sure who is right? Please

*asked on February 5, 2007* -
## Organic Chemistry

This compound is characterized by ionic bonding between a group 1 metal cation and a tetrahedral anion. Write an appropriate Lewis structure for the anion and a specify a formal charge if there is one. NaBF4 I looked up the answer and I have a few

*asked on January 21, 2008* -
## English MLA

I having serious trouble with MLA Works Cited Page. How do you cite something that was from CBS Online? Its not really an article from a Newspaper online; should I just site it as a website??? Thank You Thank you for using the Jiskha Homework Help Forum.

*asked on March 12, 2007* -
## Calculus

The Picture It frame company determines that the cost function for its new make-at-Home picture frame is: C(x)= 60x + 72,000, where x is the number of frames produced and C(x) is the cost in dollars. The revenue function for the same freame is:

*asked on February 26, 2007* -
## Biology/Embryology

An ion pump: A. requires hydrolysis of ATP to move ions B. does not require energy to move ions C. exchanges ions with the same charge D. exchanges ions with opposite charge E. A and C An ion channel: A. requires hydrolysis of ATP to move ions B. does not

*asked on January 26, 2008* -
## English-MLA

I am having serious trouble with MLA format. Please let me know if these are correct, if you can (I tried to indent): Ashford, Tomeiko. "Test" 27 March 2007 TAB Bruno, Daniel. [underlined]The Composition of Everyday Life[underlined]Boston: Thomson

*asked on April 17, 2007* -
## Anatomy-bobpursley

How do the gas laws (Daltons, Boyles and Henrys)apply to the respiratory processes? Anatomy & Physiology - bobpursley, Wednesday, March 21, 2007 at 11:51am I will be happy to critique your thinking on this. Anatomy & Physiology - Aletha, Wednesday, March

*asked on March 21, 2007* -
## Biology

Describe the relationship between the respiratory and the cardiovascular systems! Doesnt the respiratory feed the cardiovascular with oxygen, and getting rid of CO2 and water? Doesnt the cardiovascular system feed the respiratory system with a fluid for

*asked on March 18, 2007* -
## Chemistry

#3 a)What is the pH when 1.25L of a 0.200 M solution of the strong electrolyte NaH2PO4 is mixed with 1.00 L of a .150M solution of the strong electrolyte Na2HPO4? b)What is the pH if the volume of the solution in problem #3a is doubled? c) What is the pH

*asked on April 1, 2007* -
## Calculus

After t hours of an 8-hour trip the distance a car travels is modeled by: D(t)= 10t + (5)/(1+t) - 5 where D(t) is measured in meters. a) derive a formula for the velocity of the car. b) how fast is the car moving at 6 hours? c) derive a formula for the

*asked on March 18, 2007* -
## Calculus

Posted by Aletha on Sunday, March 18, 2007 at 6:51pm. After t hours of an 8-hour trip the distance a car travels is modeled by: D(t)= 10t + (5)/(1+t) - 5 where D(t) is measured in meters. a) derive a formula for the velocity of the car. b) how fast is the

*asked on March 18, 2007* -
## Calculus

After t hours of an 8-hour trip the distance a car travels is modeled by: D(t)= 10t + (5)/(1+t) - 5 where D(t) is measured in meters. a) derive a formula for the velocity of the car. b) how fast is the car moving at 6 hours? c) derive a formula for the

*asked on March 18, 2007* -
## Anatomy & Physiology

George was an industrial worker who had just completed working four days of double shifts. At the end of his last 2 hours of the fourth shift he experienced an episode of dizziness and blurred vision. Describe what you think has happened to him and which

*asked on May 3, 2007* -
## Chemistry

12.

*asked on February 4, 2007* -
## 121

why should we use parathesis in naming the formula

*asked on September 27, 2017*