1. Chemistry

H2SO4(aq) + H2O(l) ⟶ H3O+(aq) + HSO4–(aq) (Stage I) Identify the Brønsted-Lowry acid and base in the reaction.

2. Chemistry

The solubility of sugar is 204 g/ 100 g water at 20 °C. How many grams of water are needed to dissolve 612 grams of sugar at the same temperature?

3. math

Bali purchases 75 shares of a stock for \$37.75. In 7 years, he sells the stock for \$3,190.19. He calculates his ROI, shown below. Did he do this correctly? If not, what error did he make? 37.75(75) - 3190.19/37.75(75)= -12.7% ROI A. Yes, he solved it

4. Chemistry (mol)

2CO + O2 → 2CO2 If 3.4 moles of carbon dioxide (CO2) form at the end of the reaction, how many moles of carbon monoxide (CO) and oxygen gas (O2) entered the reaction?

5. Chemistry (concentration)

A 200 mL NaCl solution with a concentration of 4.0 g/L is mixed with a 600 mL solution containing 8% NaCl (m/v). What is the final concentration of salt in the solution in g/L?

6. Chemistry

During a titration experiment, a 150.0 mL solution of 0.05 M sulfuric acid (H2SO4) is neutralized by 300.0 mL solution with an unknown concentration of sodium hydroxide (NaOH). What is the concentration of the sodium hydroxide solution? The answer I got

Della purchased a warehouse on Feb. 25, 2017 for \$350,000. \$45,000 of the price was for land. What is her cost recovery deduction for 2017? How do I figure this??

8. science chemistry

Calculate the value of Avogadro's no if density is =2.165g/cm3 find distance bw Na+and Cl_ in NaCl =281pm

9. Chemistry (volume)

The molarity of a sodium hydroxide solution is 0.2 M. The molar mass of NaOH is 40 g/mol. If 20 g of sodium hydroxide (NaOH) is dissolved in water in this solution, what is the volume of the solution?

10. trigonometry

In another attempt to determine the height of the flagpole, a metre stick was placed vertically beside the flagpole. When the flagpole’s shadow was 36.72 m long, the metre stick’s shadow was 3.06 m long. Find the height of the flagpole.

11. American Government

If there were a case regarding the freedom of religion in the Supreme Court, which of the following would the justices support? a. a ban on religious practices in public b. a ban on compulsory prayer in public schools c. a ban on religious head coverings

12. Math -- repost for "nadine"

nadine -- Please use the Post a New Question link to ask your questions. Don't piggyback on another student's question. --------------- nadine's question -- Karen deposited \$4000 into an account with 2.4% interest, compounded quarterly. Assuming that no

13. Math

The following chart is printed on a package of cookie mix. Number of cookies: 24 Amount of mix: 2 1/2 cups Amount of milk: 1 1/4 cups Marina wants to make six dozen cookies for the school bake sale. How much mix and milk does she need?

14. English

Youngster find it difficult to the criticism in the peer group Appropriate phrasal verb to be used here is

15. science

does p-chlorophenol soluble in sodium bicarbonate?

16. English

Write a sentence using the word: programme to show the meaning.

17. physics

A sheet of paper can be withdrawn from under a container of milk without toppling it if the paper is jerked quickly. this best demonstrates that: a) the carton of milk has no acceleration b) there is an action-reaction pair of forces c) gravity tends to

18. Chem

A 0.2 M KOH solution has a volume of 3 L. What percent of water should be evaporated to obtain a 0.6 M KOH solution? The answer I got is, 66.7%

19. Chemistry

During a titration experiment, a 150.0 mL solution of 0.05 M sulfuric acid (H2SO4) is neutralized by 300.0 mL solution with an unknown concentration of sodium hydroxide (NaOH). What is the concentration of the sodium hydroxide solution?

20. science

does 2-napthol soluble in sodium hydroxide? in water? in sodium bicarbonate?

21. English

1. Lunchtime for first-year students is at 12:30. 2. The lunchtime for first-year students is at 12:30. 3. Lunchtime for first-year students is 12:30. 4. The lunchtime for first-year students is 12:30. 5. Lunch time for first-year students starts 12:30. 6.

22. health

1. Which food do students eat at lunch time at school in Peru? 2. Which food do students eat at lunch time at school in India? 3. Which food do students eat at lunch time at school in Brazil? Would you answer the questions? And where can I get the

23. chemistry

an unknown alcohol reacts with sodium salt but further tests show the compound to be an aliphatic hydrocarbon. what structural unit is probably present in the hydrocarbon?

24. english / law

What is a synonym for exhibit in the sense of law ? Exhibit Def: a piece of evidence produced for the court. Is there none because it doesn't seem like there is any synonyms/ antonyms for this word with this law meaning. I'm only finding exhibit like

25. maths

if the zeroes of the polynomial x2-5/2x+k are reciprocal of each other, find the value of k ?

26. chemistry

Why do alcohols that show little tendency to dissolve in water appear to dissolve readily in 85% phosphoric acid? Would you describe the latter behavior as solubility or a chemical reaction? Explain

27. English

She sat up all------the night nursing her mother Please do answer the right one

28. math :(

In another attempt to determine the height of the flagpole, a metre stick was placed vertically beside the flagpole. When the flagpole’s shadow was 36.72 m long, the metre stick’s shadow was 3.06 m long. Find the height of the flagpole.

29. physics

If a body of 4.5kg falls freely from rest for 2seconds before it strike the ground. Calculate the maximum kinetic energy a body will gain

30. calc

Determine the amount of wire needed to connect poles A, B, C . Without crossing the river, so you must establish a baseline triangulate position of the poles and determine the distance.They aren't in a straight line. The following measurements are known :

31. English

1. Where is this country? 2. What is this country? 3. What country is this? 4. What country is it? Answer: The country is Russia. [What is the suitable question for the answer?]

32. chemistry

theoretically, how much iodoform could be prepared from 25ml of 95% of ethanol(sp.gr. 0.79)?

33. chemistry

The aliphatic alcohols and ethers are isometric; seven structures may be written for the molecular formula, C4H10O. if you were required to identify an unknown of this formula, tell exactly how would you go about it.

34. English

English - rfvv Friday, March 16, 2018 at 3:07pm Thank you. 6. Dad is in front of the door. 7. Dad is in back of the door. 8. Dad is in the back of the door. 9. Dad is at back of the door. 10. Dad is at the back of thedoor. [What about these sentences?

35. Math

Given that 3, x, y, 18 are in a geometric progression. find the values of X and Y.

36. maths

Question : If the length of a brick is x, write an expression for the length of 2 bricks. Sorry this may sound dumb but i'm confused... is it 2x or x²

37. Environmental Science

What is the greatest threat to air quality? What are 5 sources of outdoor air pollution (natural or anthropomorphic)

38. Physics

In a trebuchet, what angular velocity would a 200kg payload reach if the 1000kg counterweight is moving clockwise at an angular acceleration of 20m/s^2 for 3 seconds?