Questions by Jafari

Questions by Jafari

Distilled vinegar contains a solution of acetic acid (CH3CO2H) in H2O. What is the concentration of the solution that results from diluting 500 ml of 0.839 M vinegar solution to 2.5 L? A) 0.148 M CH3CO2H

asked Jun 8, 2021

2 answers

0 votes

155k views

Zoologist: Horseflies are attracted to horizontally polarized light, which reflects off large, dark animals that they bite. This may explain why zebras evolved vertical stripes—the stripes cancel the horizontal

asked May 12, 2021

1 answer

5 votes

161k views

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. A store buys 77 1 2 pounds of mulch in a large shipment. They divide the mulch up into bags that

asked Mar 6, 2021

1 answer

0 votes

7.1k views

HELP please ASAP. I am being timed, and I am very confused on these two questions, answering both questions would be really appreciated...

asked Feb 24, 2021

1 answer

5 votes

202k views

How did entertainers assist the government’s World War II propaganda campaign? They promoted enlistment and other patriotic activities. They served in the military. They entertained troops at home and

asked Feb 17, 2021

1 answer

5 votes

231k views

70% of a number is what fraction of that number

asked Feb 7, 2021

2 answers

2 votes

83.7k views

The recommended daily dietary allowance for zinc among males older than age 50 years is 15 mg/day. An article reports the following summary data on intake for a sample of males age 65−74 years: n = 114,

asked Jul 27, 2020

1 answer

2 votes

6.8k views

What is the fifth term in the geometric sequence described by this explicit formula y=40×(-2)^(n-1)

asked Jun 13, 2020

1 answer

5 votes

171k views

If a spider has 8 legs and dragonflies have 6 legs. 28 spiders and dragonflies have 200 legs altogether. How many spiders are there? How many dragonflies are there?

asked Mar 16, 2020

1 answer

2 votes

44.2k views

Which are examples of capital crimes? Check all that apply. 1. threatening to use a weapon in a robbery 2. accidentally killing a person after kidnapping him or her 3.murdering another person in cold blood

asked Mar 14, 2019

1 answer

0 votes

164k views

What is simple diffusion

asked Jan 26, 2019

2 answers

1 vote

115k views

As part of her retirement savings plan, Patricia deposited $250 in a bank account during her first year in the workforce. During each subsequent year, she deposited $40 more than the previous year. Find

asked Jan 7, 2019

1 answer

3 votes

91.6k views

What is the numerator for the following rational expression? x/y + 8/y = ?/y

asked Nov 8, 2018

1 answer

0 votes

179k views

How do I end a formal letter to a teacher?

asked Jun 7, 2018

2 answers

4 votes

88.6k views

The recycling of plastics most impacts Earth by causing- a- an increase in the amount of fuel used in cars b- an increase in the amount of pollution in the oceans c- a reduction in the amount of waste

asked May 22, 2018

1 answer

2 votes

85.7k views

Which sentence has a subject-verb agreement error? A) Why doesn't the weatherman ever accurately predict the possibility of rain on field trip days? B) The hockey players who were caught out past curfew

asked May 18, 2018

2 answers

1 vote

72.7k views

A rectangle has perimeter 70 cm and length 27 cm. what is its width?

asked Mar 11, 2017

1 answer

1 vote

55.8k views

Which word is the best replacement for the word impressive

asked Mar 2, 2017

2 answers

5 votes

220k views

Who is the most prominent person in the entire Congress

asked Jan 3, 2017

2 answers

0 votes

42.9k views

if a full moon occurs every 30 days and the last one fell on a friday. how many days will it take to fall on a Friday again

asked Nov 14, 2016

2 answers

1 vote

232k views

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