# Maree

Most popular questions and responses by Maree
1. ## chemistry

From what acid and what base are the following salts made: KBr, NH4NO3, and BaCl2?

2. ## physics

During a transatlantic flight, you drink a bottle of water and tightly close its lid again. Back on the ground during taxiing to the terminal, you notice that the thin plastic bottle is crushed, and you eyeball it to be only about 70 percent of its

3. ## chem

tell whether .1M solutions of the following salts would be acidic, neutral, or basic: CaCl2, CuSO4, (NH4)2SO4, KClO4, KClO4, NaCN.

4. ## Physics

The longer a straw, the harder it is to drink from. If the air pressure is 93300 Pa, and if you could create a perfect vacuum in your mouth, what is the maximum length of a straw that you could still drink from? Density of water: 1000kg/m3. Ignore

5. ## physics

Frosty the Snowman was a jolly happy soul of mass 85 kg. If his initial temperature was -19C , how much heat did he absorb till he was at 25C ?

6. ## Physics

Charge 1 is 3 C , charge 2 is 15 C , the distance between the charges is 8 cm, and they are located in a vacuum. What is the magnitude of the electric potential (zero at infinity) at position *, i.e., exactly between the two charges?

7. ## chem

If the pH of a solution is 9, what are the hydrogen ion and hydroxide ion concentrations?

8. ## physics

Two identical metal plates with small holes are aligned a distance L=7.8 cm apart. They have a potential difference of 127 Volts. An electron can enter through the hole in the negative plate and exit through the hole in the positive plate. If it enters

9. ## Statistics

You have received a year-end bonus of \$5000. You decide to invest the money in the stock market and have narrowed your investment options down to two mutual funds. the following data represent the historical quarterly rates of return of each mutual fund

10. ## Physics

In a very simple model of the lower atmosphere, air has a constant density of 1.22 kg/m3. How much would the air pressure change over a height difference of 100 m?

11. ## physics

In a classic model, the electron of a hydrogen atom circles the proton at a radius of 0.052910−9m when it is in the n=1 state. What is its electric potential energy?

12. ## Retorical Devices

What is the role of rhetoric in influencing people's attitudes and beliefs? Please tell us what you think, and we'll be glad to add our comments and critique. I really love this website. I just went back to college. And thank goodness fortechnology. Use