Questions by Sergey Sergeyev

Questions by Sergey Sergeyev

A buffer solution has a pH of 4.6. Calculate the concentration of H3O+ in the buffer.

asked Nov 22, 2021

1 answer

1 vote

96.1k views

Burning 1 kg of coal releases about 3 million joules of energy. If you could use all of the chemical energy to lift another kilogram of coal, how high could you lift it?

asked Sep 21, 2021

1 answer

1 vote

149k views

What type of federalism was most common in the United States until 1930? creative new dual cooperative

asked Sep 10, 2021

2 answers

0 votes

183k views

Geometry hw, im suffering please help me. If you could also explain that'd be great. :)

asked Jul 18, 2021

1 answer

1 vote

64.3k views

A Randstad/Harris interactive survey reported that 25% of employees said their company is loyal to them. Suppose 9 employees are selected randomly and will be interviewed about company loyalty. A. What

asked Jul 18, 2021

1 answer

5 votes

128k views

Plz help this is due by 12AM. Chapter 1 of the boy who harnessed the wind. Describe William's life and compare it to American teenagers and even your own.

asked Jul 2, 2021

1 answer

0 votes

216k views

I don’t know what to do here someone please help

asked Jun 12, 2021

1 answer

4 votes

120k views

There are 8 math classes in 7th grade. Seven are equally sized and the 8th class has 32 students. If there are a total of 221. students in the 7ih grade, how many are in each of the equally sized math

asked Dec 3, 2020

1 answer

1 vote

228k views

DNA molecules of different sizes are often separated with the use of a technique called electrophoresis. With this technique, DNA molecules are placed in a gel, an electrical current is applied to this

asked Dec 1, 2020

1 answer

0 votes

153k views

Dante is solving the system of equations below. He writes the row echelon form of the matrix. Which matrix did Dante write?

asked May 27, 2020

1 answer

4 votes

172k views

Write a 500 word essay on what the meaning of losing someone Who doesn’t respect or appreciate you is actually a gain not a loss

asked May 26, 2020

1 answer

3 votes

73.9k views

What was the outcome of the Battle of El Alamein?

asked Aug 25, 2019

1 answer

0 votes

177k views

Jan went to the mall with $20. She spent $5 at the mall. What decimal represents how much of her $20 she spent at the mall? Explain how you got your answer.

asked Mar 14, 2019

1 answer

4 votes

123k views

#29 can you help me please and PLEASE SHOW YOUR WORK

asked Oct 4, 2018

1 answer

1 vote

115k views

While boating, you see a red flag with a white diagonal stripe. what does this flag mean?

asked Sep 27, 2018

1 answer

3 votes

13.5k views

A coupon offers $1.00 off the 16 ounce size which size is the better buy then (show work please)

asked May 6, 2018

2 answers

0 votes

75.2k views

Which statement best describes program music? A. piece music with a specified time limit B. small musical play with singing and spoken words C. music created by computer program D. music that mimics or

asked Apr 4, 2018

1 answer

2 votes

19.2k views

Write the name of the period that has the digits 486

asked Apr 25, 2017

1 answer

4 votes

197k views

Explain The Relationship Between Citizenship And The Right To Vote.

asked May 23, 2016

2 answers

1 vote

131k views

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