Island kid

a) n = P^2V / R(1+T)

b) 1/n = R+RT/P^2V

c) P^2/T = 2nR/V

d) nT = P^2-n/R

e) -nR = -P^2V+nRT

The solution of the equation x = 10/(2x-1) are

a) 2 and 5/2

b) -2 and -5/2

c) 2 and -5

d) -2 and 5/2

e) 2 and -5/2

Consider the hypothetical ion "UH". If the formula of sodium carbonate is Na2CO3 and the formula of UH chlorine is UHCI3, what is the formula of UH carbonate ?

a) UHCO3

b) UH(CO3)3

c) UH2(CO3)3

d) UH3(CO3)2

e) UH3(CO3)4

The mass of 5.20 moles of sulfur dioxide, SO2, is correctly expressed as

a) 8.64 x 10^-24g

b) 166g

c) 12.3g

d) 333g

e) 3.13 x 10^24g

if P increases by a factor of 3 and T decreases by a factor of 2, what is the change in V?

a) V increases by a factor of 3/2

b) V increase by a factor of 6

c) V decreases by a factor of 3/2

d) V decreases by a factor of 6

e) V decreases 2/3

Please explain if possible, thank you !(:

Please be detailed with responses and show calculations. Thank you soo much !!

1. A bicycle mechanic has 10 frames and 16 wheels in the shop.

a. How many complete bicycles can he assemble using these parts?

b. What topic in chemistry does this scenario relate to?

2. Why do you need to use amount in moles to solve stoichiometry problems? Why can’t you just convert from mass to mass?

3. Oxygen can be prepared by heating potassium chlorate in the following skeleton equation.

KClO3 => KCl + O2

a. What mass of O2 can be made from heating 125 g of KClO3?

b. How many grams of KCl could form from 20.8 g KClO3?

c. How many grams of KClO3 must react to form 42.0 ml of O2? (Density of O2 is 1.428g/L)

d. How many molecules of KClO3 are needed to make 293 grams of O2?

(SHOW ALL CALCULATIONS OR NO CREDIT WILL BE ISSUED)

Chemical Reactions Unit Questions

1. A bicycle mechanic has 10 frames and 16 wheels in the shop.

a. How many complete bicycles can he assemble using these parts?

b. What topic in chemistry does this scenario relate to?

2. Why do you need to use amount in moles to solve stoichiometry problems? Why can’t you just convert from mass to mass?

3. Oxygen can be prepared by heating potassium chlorate in the following skeleton equation.

KClO3 => KCl + O2

a. What mass of O2 can be made from heating 125 g of KClO3?

b. How many grams of KCl could form from 20.8 g KClO3?

c. How many grams of KClO3 must react to form 42.0 ml of O2? (Density of O2 is 1.428g/L)

d. How many molecules of KClO3 are needed to make 293 grams of O2?

Solids Liquids and Gases Unit Questions

4. How does the kinetic-molecular theory explain why atmospheric pressure is greater at lower altitudes than at higher altitudes?

5. Molecules of hydrogen escape from the earth, but molecules of oxygen and nitrogen are held in earth’s atmosphere. Why?

6. 600 ml of a gas is at a pressure of 8.00 atm. What is the volume of the gas at 2.00 atm?

7. A gas has a pressure of .370 atm at 50.0 °C. What is the pressure at STP?

Water Solutions Acids and Bases

8. Compare and contrast acids and bases in terms of pH, taste, conductivity, feel, and reactivity with metals.

9. What actually is the meaning of pH and how is it measured?

10. What makes bases good cleaning products and why are they slippery to the touch?

Reaction Rates Unit Questions

11. What are the most important factors on which the rate of a chemical reaction depends? Explain why chemical reactions are influenced by each factor.

12. What role do enzymes play in living systems? Give one example and explain its function.

Thermodynamics Unit Questions

13. Explain what entropy is and provide an example.

14. Briefly explain how the laws of thermodynamics are demonstrated in the process of making ice cream.

15. How much energy must be added to 250.00 g of ice at 0°C to raise the temperature of the water to 50.0 °C? The heat of fusion for water is 334 J/g. The specific heat of water is 4.184 J/g•K.

Their are 15 questions but you don't need to answer all of them but that would be nice if you can (: please give detailed answers. THANK YOU !!

SHOW ALL CALCULATIONS

1. A bicycle mechanic has 10 frames and 16 wheels in the shop.

a. How many complete bicycles can he assemble using these parts?

b. What topic in chemistry does this scenario relate to?

2. Why do you need to use amount in moles to solve stoichiometry problems? Why can’t you just convert from mass to mass?

3. Oxygen can be prepared by heating potassium chlorate in the following skeleton equation.

KClO3 => KCl + O2

a. What mass of O2 can be made from heating 125 g of KClO3?

b. How many grams of KCl could form from 20.8 g KClO3?

c. How many grams of KClO3 must react to form 42.0 ml of O2? (Density of O2 is 1.428g/L)

d. How many molecules of KClO3 are needed to make 293 grams of O2?

4. How does the kinetic-molecular theory explain why atmospheric pressure is greater at lower altitudes than at higher altitudes?

5. Molecules of hydrogen escape from the earth, but molecules of oxygen and nitrogen are held in earth’s atmosphere. Why?

6. 600 ml of a gas is at a pressure of 8.00 atm. What is the volume of the gas at 2.00 atm?

7. A gas has a pressure of .370 atm at 50.0 °C. What is the pressure at STP?

Water Solutions Acids and Bases

8. Compare and contrast acids and bases in terms of pH, taste, conductivity, feel, and reactivity with metals.

9. What actually is the meaning of pH and how is it measured?

10. What makes bases good cleaning products and why are they slippery to the touch?

Reaction Rates Unit Questions

11. What are the most important factors on which the rate of a chemical reaction depends? Explain why chemical reactions are influenced by each factor.

12. What role do enzymes play in living systems? Give one example and explain its function.

Thermodynamics Unit Questions

13. Explain what entropy is and provide an example.

14. Briefly explain how the laws of thermodynamics are demonstrated in the process of making ice cream.

15. How much energy must be added to 250.00 g of ice at 0°C to raise the temperature of the water to 50.0 °C? The heat of fusion for water is 334 J/g. The specific heat of water is 4.184 J/g•K.

Their are 15 questions but you don't need to answer all of them but that would be nice if you can (: please give detailed answers. THANK YOU !!

SHOW ALL CALCULATIONS

1. A bicycle mechanic has 10 frames and 16 wheels in the shop.

a. How many complete bicycles can he assemble using these parts?

b. What topic in chemistry does this scenario relate to?

2. Why do you need to use amount in moles to solve stoichiometry problems? Why can’t you just convert from mass to mass?

3. Oxygen can be prepared by heating potassium chlorate in the following skeleton equation.

KClO3 => KCl + O2

a. What mass of O2 can be made from heating 125 g of KClO3?

b. How many grams of KCl could form from 20.8 g KClO3?

c. How many grams of KClO3 must react to form 42.0 ml of O2? (Density of O2 is 1.428g/L)

d. How many molecules of KClO3 are needed to make 293 grams of O2?

4. How does the kinetic-molecular theory explain why atmospheric pressure is greater at lower altitudes than at higher altitudes?

5. Molecules of hydrogen escape from the earth, but molecules of oxygen and nitrogen are held in earth’s atmosphere. Why?

6. 600 ml of a gas is at a pressure of 8.00 atm. What is the volume of the gas at 2.00 atm?

7. A gas has a pressure of .370 atm at 50.0 °C. What is the pressure at STP?

Water Solutions Acids and Bases

8. Compare and contrast acids and bases in terms of pH, taste, conductivity, feel, and reactivity with metals.

9. What actually is the meaning of pH and how is it measured?

10. What makes bases good cleaning products and why are they slippery to the touch?

Reaction Rates Unit Questions

11. What are the most important factors on which the rate of a chemical reaction depends? Explain why chemical reactions are influenced by each factor.

12. What role do enzymes play in living systems? Give one example and explain its function.

Thermodynamics Unit Questions

13. Explain what entropy is and provide an example.

14. Briefly explain how the laws of thermodynamics are demonstrated in the process of making ice cream.

15. How much energy must be added to 250.00 g of ice at 0°C to raise the temperature of the water to 50.0 °C? The heat of fusion for water is 334 J/g. The specific heat of water is 4.184 J/g•K.

Hi, so i don't understand what any of this mean. please help me ! i couldn't paste the table my hw's on so here the address to my hw. please explain every step you took to solving the question so i'll be able to better understand HOW to do it. Thank you ! There is only like 6 questions.

http://marric.us/files/HS_chem_4_latent_heat_probl...

am i the only one that is against the killin of bin laden ? am i the only one that thought it was totally wrong ?

Please explain how to find the answer to this as simple as possible. thank you !

after working for two weeks, Nita put 11% of her income in savings. Her friend Pat saved 8% of her income during the same time period. If each put 22$ in savings, how much more did pat earn than Nita ?

a. $34

b. $66

c. $75

d. $733

You want to clean the floor in your kitchen, so you add ½ cup of floor cleaner to 2 gallons of water. While you aren’t looking, your little sister drinks some of the liquid. In a panic, you call the poison control center. What information will they need to know? Will your sister be very ill? Why is it more useful to express a solution in terms of concentration than in terms of quantity of solute alone?

Please explain how to do each. Thank you !

2) If I initially have a gas with a pressure of 84 kPa and a temperature of 350 C and I heat it an additional 230 degrees, what will the new pressure be? Assume the volume of the container is constant

3) My car has an internal volume of 2600 liters. If the sun heats my car from a temperature of 200 C to a temperature of 550 C, what will the pressure inside my car be? Assume the pressure was initially 760 mm Hg.

5) A toy balloon filled with air has an internal pressure of 1.25 atm and a volume of 2.50 L. If I take the balloon to the bottom of the ocean where the pressure is 95 atmospheres, what will the new volume of the balloon be? How many moles of gas does the balloon hold? (Assume T = 285 K)

i'm going on 17 soon and i'm tired of bein flat chested. i kno i should b satisfied with my body but i'd like to have something there ya'know ?

does anyone know of a way to actually enhance your breasts ? without breast implants and just using push-up bras.

i'm gonna be senior next year in high school and i'm tired of bein flat chested. i kno i should b satisfied with my body but i'd like to have a lil something.

does anyone know of a way to actually enhance your breasts ? without breast implants and just using push-up bras.

i have to choose from...

synthesis

decomposition

single replacement

double replacement

combustion

I thought it was combustion, but i'm not too sure if that was right. could you also give me a balanced equation for this reaction ? Thank you !

Balancing Chemical Equations Worksheet

6. _____ CO2 + _____ H2O =>_____ C6H12O6 + _____ O2

7. _____ Zn + _____ HCl =>_____ ZnCl2 + _____ H2

8. _____ SiCl4 + _____ H2O =>_____ H4SiO4 + _____ HCl

9. _____ Na + _____ H2O =>_____ NaOH + _____ H2

10. _____ H3PO4 =>_____ H4P2O7 + _____ H2O

11. _____ C10H16 + _____ Cl2 =>_____ C + _____ HCl

12. _____ CO2 + _____ NH3 =>_____ OC(NH2)2 + _____ H2O

13. _____ Si2H3 + _____ O2 =>_____ SiO2 + _____ H2O3

14. _____ Al(OH)3 + _____ H2SO4 =>_____ Al2(SO4)3 + _____ H2O

15. _____ Fe + _____ O2 =>_____ Fe2O3

16. _____ Fe2(SO4)3 + _____ KOH =>_____ K2SO4 + _____ Fe(OH)3

17. _____ C7H6O2 + _____ O2 =>_____ CO2 + _____ H2O

18. _____ H2SO4 + _____ HI =>_____ H2S + _____ I2 + _____ H2O

19. _____ FeS2 + _____ O2 =>_____ Fe2O3 + _____ SO2

20. _____ Al + _____ FeO =>_____ Al2O3 + _____ Fe

21. _____ Fe2O3 + _____ H2 =>_____ Fe + _____ H2O

22. _____ Na2CO3 + _____ HCl =>_____ NaCl + _____ H2O + _____ CO2

23. _____ K + _____ Br2 =>_____ KBr

24. _____ C7H16 + _____ O2 =>_____ CO2 + _____ H2O

25. _____ P4 + _____ O2 =>_____ P2O5

I don't really understand this. please help me do this.

Balancing Chemical Equations Worksheet

1. _____ H2 + _____ O2 =>_____ H2O

2. _____ N2 +_____ H2 =>_____ NH3

3. _____ S8 + _____ O2 =>_____ SO3

4. _____ N2 + _____ O2 => _____ N2O

5. _____ HgO =>_____ Hg + _____ O2

6. _____ CO2 + _____ H2O =>_____ C6H12O6 + _____ O2

7. _____ Zn + _____ HCl =>_____ ZnCl2 + _____ H2

8. _____ SiCl4 + _____ H2O =>_____ H4SiO4 + _____ HCl

9. _____ Na + _____ H2O =>_____ NaOH + _____ H2

10. _____ H3PO4 =>_____ H4P2O7 + _____ H2O

11. _____ C10H16 + _____ Cl2 =>_____ C + _____ HCl

12. _____ CO2 + _____ NH3 =>_____ OC(NH2)2 + _____ H2O

13. _____ Si2H3 + _____ O2 =>_____ SiO2 + _____ H2O3

14. _____ Al(OH)3 + _____ H2SO4 =>_____ Al2(SO4)3 + _____ H2O

15. _____ Fe + _____ O2 =>_____ Fe2O3

16. _____ Fe2(SO4)3 + _____ KOH =>_____ K2SO4 + _____ Fe(OH)3

17. _____ C7H6O2 + _____ O2 =>_____ CO2 + _____ H2O

18. _____ H2SO4 + _____ HI =>_____ H2S + _____ I2 + _____ H2O

19. _____ FeS2 + _____ O2 =>_____ Fe2O3 + _____ SO2

20. _____ Al + _____ FeO =>_____ Al2O3 + _____ Fe

21. _____ Fe2O3 + _____ H2 =>_____ Fe + _____ H2O

22. _____ Na2CO3 + _____ HCl =>_____ NaCl + _____ H2O + _____ CO2

23. _____ K + _____ Br2 =>_____ KBr

24. _____ C7H16 + _____ O2 =>_____ CO2 + _____ H2O

25. _____ P4 + _____ O2 =>_____ P2O5

Find the focus of the parabola given by

x^2+6x+5y+14=0

Is the following equation an equation for a parabola, circle, hyperbola, or ellipse ? also find vertex or center.

-3y^2+6y-x-2=0

Is the following equation an equation for a parabola, circle, hyperbola, or ellipse ? also find vertex or center.

-x^2-9y^2-4x-36y-31=0