Questions Asked on
September 19, 2018

chemistry
For the diprotic weak acid H2A, Ka1 = 2.8 × 106 and Ka2 = 5.8 × 109. What is the pH of a 0.0700 M solution of H2A? What are the equilibrium concentrations of H2A and A2– in this solution?
asked by ggigignune 
science
4. Which of the following is the primary control of how much water vapor the air can hold? a. Number of particulates present b. Temperature of the air c. Specific heat of water d. Amount of dry gases present answer: b 6. Which of the following would cause
asked by ~ 
science
1. During a clear, calm day, the relative humidity would tend to _______ from sunrise to early afternoon? a. Increase b. Decrease c. Remain constant d. It is impossible to determine answer: b 2. In which of the following situations is the amount of water
asked by are these correct? 
math
Some friends played a board game. During the game, one unlucky player had to move back 9 spaces 7 turns in a row. Find a number to represent that player's movements for those 7 turns. The number nothing represents that player's movements for those
asked by juju 
Tech Business
PLEASE HELP!! I'm so behind. Are my answers correct? This is my last class to pass to graduate, and I have a hard time with it. 1. Which of the following Web 2.0 tool can aid in searches using key words? A) Blogging B) Podcasting C) Tagging(My answer) D)
asked by Kristen 
calculus2
integral (xsin^2(x))dx
asked by mi 
History
I need help with finding out the reasons the declaration of Indapendence was written, can someone help me?! mayeb give meh links
asked by Becki! 
Physics A2 level Student
When I came new to As I was given these as homework after we did easy practise questions in class. I find this topic and all its worksheets easy except this one for some reason. I got every single one of these questions wrong and struggled and still do
asked by Help needed 
Chemistry
What is the difference between a commercial NiCd battery and a galvanic cell system of NiCd with nickel chloride concentration of 0.05M and cadmium nitrate concentration od 0.01M
asked by Nic 
Physics
A boy and a man carry uniform rod of length l horizontally in such a way that the boy get 1/4of the load.if the boy is at one end of the rod the distance of the fan from the other end is
asked by Anonymous 
Physics
an athlete executing a long jump leaving the ground at an angle of 30° and travels 8.9m .what was the take off speed?
asked by Kunal 
Science
You need to make a 150mM solution of NaCl (MW = 58). How much NaCl do you need to make 1L (in moles and in grams)? If you b need to make 250mL how much NaCl would you need in grams?
asked by Tom 
Social Studies
1. How were the Greeks able to defeat the Persians? A. The Persian army and navy were too weak to win. B. The Spartans fought alone without the help of Athens. C. Sparta and Athens came together to defeat the Persians. D. Athens fought alone without the
asked by Rosie Lisette 
Career. 8th PLZ GIVE ANSWERRS
1. You need a college degree to enter the military True False 2. Which of the following is an elected office? lawyer police officer paramedic state representative 3. All people in government or public administration are elected. True Flase 4. Inspectors
asked by Sophie 
social studies HELP
Prior to the destruction of the Second Temple, which of the following areas of the world contained Diaspora communities? A. Central Asia B. Great Britain C. Japan D. Southern Africa
asked by bob 
Math Statistacs
U2 is an Irish band that has been popular for over three decades. The lengths of 80 of their songs were selected at random and are listed in the table below. Lengths of Randomly Selected U2 Songs. ? (seconds) 382 222 214 338 310 559 334 225 177 189 278 300
asked by Matt 
Biology
Which of the following statements best explains how the cell membrane regulates what goes in and out of the cell? A. the membrane allows only certain molecules to move into the cell B. the membrane destroys most molecules so that they do not enter the cell
asked by Behind In School 
Science
All cells regardless of size share all of the following characteristics except... A. have a cytoplasm B. have a nucleus C. have a plasma membrane D. have ribosomes
asked by Maygen 
science
a child standing in front of high cliff make a loud sound, and hears an echo after 30 seconds. Calculate how far is the child from the cliff?
asked by deng 
Science
A new cancer fighting agent was discovered in a rare tropical plant. In animals, the substance prevents mitosis by disrupting the formation of microtubules. If the microtubules are not working properly, which of the following is specifically affected? A.
asked by Failing Science 
ss
What belief did Zoroaster teach? A. He taught that the universe is dominated by good, not evil. B. He taught that the universe is governed by natural laws, not gods and goddesses. C. He taught that the universe is locked in an eternal struggle between good
asked by Vexento 
math
How do inverse operations help solve algebraic equations
asked by hunter 
History .
What prompted the Egyptians to build the pyramids? please help me.
asked by dessy . 
ss
Which of the following are characteristics of Homo sapiens?
asked by vell 
Ed Tech and Online Learning
What is the purpose of a title slide? A. to add titles to each slide B. to introduce the presentation C. to describe the resolution of a presentation D. to provide an outline of the presentation
asked by Sarah Gonzole 
Biology
What four substances are recycled during photosynthesis and respiration? I’d come up with an answer but I’m confused... Part b: What is one component in photosynthesis that is not recycled and must be constantly available? Thank you.
asked by Ana 
Language Arts 6 A
why is the weather important in the exposition of stray
asked by vell 
HOME ECONOMICS
1)what is home economics. 2)Branches of home economic & explain.
asked by ABASIFREKE 
Biology
Why must the test tubes be thoroughly cleaned and dried when one part of the procedure is completed, before starting the next part of the procedure?
asked by Melody 
Stats
A random sample of 50 fouryearolds attending day care centers provided a yearly tuition average of 3987, with a population standard deviation of 630. Find the 90 percent confidence interval of the true mean. What is the upper bound of this interval?
asked by Kyle 
social studies
What was the main way Charles V and Philip II maintained Spanish power in Europe? A. by making treaties with neighboring countries B. by avoiding involvement in other countries' affairs C. by waging war against their enemies D. by creating an alliance with
asked by cloe 
Algebra
5x=5 whats x?
asked by Yeet 
history
How did African Americans help strengthen the Republican Party in the south?
asked by help pls!!!!!!!! 
Math
The value of y vaires directly with x, and y=18 when x=12. Find y when x=60. y=90 y=42**** y=1.5 y=40 Am I right?
asked by Anonymous 
Algebra1
What is the algebraic expression for the following word phrase: the sum of 8m and 3? A. 8m3 B. 8m+3 C. 8m/3 D. 11m My answer is D, but if I'm wrong, could you help and explain why?
asked by Lolli 
Life science
What is the term used to indicate the variety of living organisms on earth?
asked by Nozipho 
Life science
What is the the biological term used to explain carbon based minerals such as oil and coal which release heat energy during combustion?
asked by Nozipho 
Philosphy (LOGIC)
Given that A1, ... An are completely incompatible hypotheses, from the fact that the conditional probability of A1 given evidence E is greater than the conditional probability of any other Ai given E, we can infer that: A. The argument A1; therefore E is
asked by Sally 
physics
A gardener mows a lawn with an oldfashioned push mower. The handle of the mower makes an angle of 30 ∘ with the surface of the lawn. If a 50.0N force is applied along the handle of the 15kg mower, what is the normal force exerted by the lawn on the
asked by Ryan Garrett 
Physics
What is the acceleration of a mechanical part that moves from 0 to 10 m/s in 1 s? a.10 m/s b.20 m/s c.10 m/s2^
asked by Angel 
Social studies
What was the supreme court’s decision in the 1896 plessy v. Ferguson case?
asked by Anonymous 
Math
What is the simplified form of the following expression? 7m^2 + 6.5n  4 + 2.5m^2  n A. 9.5m^2 + 1.5n B. 4.5m^2 + 1.5n C. 1.5m^2  4.2n D. 9.5m^2 1.5n*****
asked by Jordan 
social studies
What is the role of the government in a mixed economy?
asked by need helppp 
Ap physics
Two identical boxes with mass 10kg sit on the horizontal floor of a truck. There is friction between one of the boxes and the floor, and no friction between the other box and the floor. The two boxes are tied together with a massless string. The truck
asked by Tyger2020 
Check my work
1. Which of the following jobs is a school career? a. architect b. instructional coordinator c. office manager d. teacher***
asked by Sid.V 
Revolutionary Era Practice
Why was it important for women to take on the work of the men who were fighting in the revolution? I think it's A. Can someone p!ease check my answer
asked by Pickering 
Check my work
2. Which of the following jobs is a career in educational support? Select two that apply a. bus driver b. librarian*** c. receptionist d. statistician*** e. machinist
asked by Sid.V 
SS
What contributed to the initial spread of Islam in the 600s and 700s? Why were Muslim warriors often successful? Besides warriors, who else spread the Muslim faith? How did early Arab Muslims treat people of other faiths? I need help with the answers!!!
asked by HELP!!! 
Physics again
The following question refers to the following expression for a particle's position: X = 3t^2  4t + 3 What is the particle's acceleration after 3 seconds? I keep getting 1 m/s2 but that's not an answer choice. I found instantaneous velocity at t=0 (3 m/s)
asked by anonymous 
Social studies
What was Alexander Hamilton’s main reason for insisting that all the nation’s debts must be paid in full?
asked by ? 
Math
What is the value of x/yz if x= 2, y= 3, and z= 4? A. 6 B. 6 C. 1/6 D. 1/6 I have no idea how to work this out. Can someone walk me through this?
asked by Jordan 
Language and Composition
You will be healthy if you eat vegetables. Eating vegetables is the only way to be healthy. Begging the question Appeal to authority Hasty generalization (my guess) Appeal to popularity
asked by Babygirl 
Math
Given that exterior angle of a regular hexagon is x, find the size of each interior angle of the hexagon. What is the correct answer for this question?
asked by Kd 
Math
In the figure AB = 11cm, BC = 8cm, AD = 3cm, AC = 5cm and DAC is a right angle. The size of ADC; The size of ACB; The area of the quadrilateral ABCD.
asked by Kd 
Math
19^4 ?
asked by Ughjezzydut 
Language and Composition
Despite the women’s movement in the 70s, women still don’t receive equal pay for equal work. Obviously, any attempt to change the status quo is not going to succeed. Appeal to pity Non sequitur Appeal to authority Hasty generalization
asked by Babygirl 
SS
What helped discourage invaders from trying to take over parts of Arabia? Where was Muhammad born? What did Muhammad say he had received from the angel Gabriel? What is the holy book of Islam? Why do Muslims give part of their wealth to charity? Who
asked by HELP!!! 
Spanish
PLEASE HELP ME! Will make as brainliest! Much appreciated. 1. A celebration in the countryside in which family and friends get together in Cuba is known as a _______. (1 point) Habana Vieja guateque campesino trovadores cocotaxi 2. La Habana Vieja's annual
asked by Help 
History
What happened when the Spanish found the French colony. A. They engaged the French settlers in warfare and killed many of them B. The gave the land to the French. C. They joined forces with the French. D. They were motivated to settle in other areas of
asked by I need help 
English
What other types of writing is similar to the autobiographical essay 1.an email sent to a friend that tells her about an event in your life 2.a book report you wrote for school 3.a postcard sent to your family while you are traveling. 4. A multiple choice
asked by Maddie 
Algebra 2
Which set of ordered pairs in the from of (x,y) does not represent a function of x? {(1,1.5), (2,1.5), (3,1.5) (4,1.5)}(my guess) {(0,1.5), (3,2.5), (1,3.3), (1, 4.5)} {(1,1.5), (1,1.5), (2,2.5), (2,2.5)} {(1,1.5), (1,1.5),(2,2.5),(2,2.5)}
asked by Babygirl 
science
Hey, I'm a 6th grade connexus student, I just found this website by accident, and is this like a question learning/answers? I'm just asking
asked by Ivan Catz N Dogz 
Science
Two dogs run down a hill at the same speed toward a pile of leaves at the bottom. The dalmatian has a mass of 29 kilograms, and the poodle has a mass of 5 kilograms. Which dog has more kinetic energy as it runs down the hill and collides with the pile of
asked by Anonymos 
Algebra 2
What is f(5)if f(x) = 2x  1 + 10? 21 19 1 21 I have no idea how to solve this.
asked by Babygirl 
Science
Two children race each other to a playground. Which of the following best describes the outcome of the race? A. The loser had the fastest speed during the race. B. The loser had the most kinetic energy during the race. C. The winner had the slowest speed
asked by Anonymos 
Science
Two buses are stopped sidebyside at a stoplight near the top of a hill. Bus A has a larger mass than Bus B because more people are riding on it. When the light turns green, both buses begin moving down the hill. How is energy being changed from one form
asked by Anonymos 
Art
So I have to do a art project where I have to create a painting or drawing that has a story in it. What should I draw/paint? Any ideas?
asked by youwillneverknowmyname 
Math
If he divides his land into square fields that are 1/3 mile long and 1/3 mile wide how many fields will he have
asked by Leah 
Math
Find two numbers the exact answer is between. 4×94
asked by Hilton 
Chemistry
A mixture of salt way in 13.78g contains CACO3 with gaseous impurity it was heated to a constant mass and the resolve was reacted with H2SO4 to form 6.78g of CASO4. Calculate the percentage purity of the calcium trizoncarbonate four I'm the mixture (ca=40,
asked by Ominyi John David 
English
How do I end my essay quickly? its supposed to be no more than 3 pages long and I have only enough space for one and a half more paragraphs. I don't want to delete anything because its all really good. Its about social media creating jobs and I feel like
asked by community college girl 
science
metric system: lower case letters are used for prefixes that include units that are....?
asked by lauren 
Math
Find the missing term ___,180,30,5 A) 1080 B) 900 C) 300 D) 210 Evaluate the expression 4(x+8) for x= 6 A) 14 B) 32 C) 48 D) 56 The cost of a school banquet is $75+30n, where n is the number attending. What is the cost for 53 people? A) $1,590 B) $4,005 C)
asked by Halp plzzzzzzzzzzzz 
Math
Kelly subtracted 2.3 from 20 and git 17.7 explain why this answer is reasonable
asked by Vanna 
Math
Jennifer had $24 to spend on five pens.after buying them shr had $14. How much did each pen cost
asked by Dulce 
English Literature
Which is the appositive in the sentence below? Our neighbor, Mrs.Eddy, is an editor. a. Mrs. Eddy*** b. Our c. editor d. neighbor
asked by Anonymous 
Math
If the area of the base of Cheops pyramid is 570,025 ft squared what is the length of one of the sides of the ancient structure
asked by Szahara 
science
1. During a clear, calm day, the relative humidity would tend to _______ from sunrise to early afternoon? a. Increase b. Decrease c. Remain constant d. It is impossible to determine answer: b 2. In which of the following situations is the amount of water
asked by are these correct? 
Math
Show that f is a function onetoone, if and only if f(x) = 0 for x=0. I cannot solve this demonstration, I know that if both elements are the same and their functions are the same, then is one to one, but in this case they only show me one element. Please
asked by Tatiana 
Social Studies
How does opportunity cost affect people's wants and needs? A.It changes the supply and demand of goods. B.It requires them to make a choice. ***** C.It requires them to be producers and consumers. D.Opportunity cost does not impact wants and needs. Please
asked by michelle :) 
English
Which of the following identifies the underlined phrase in the below sentence? Coach Mack's basketball team from 2011 is by far his best group of athletes. (Coach Mack's basketball team from 2011 is underlined) a. complete subject*** b.complete predicate
asked by Anonymous 
ED TECH FOR CONNEXUS
I NEED HELP WITH THIS I FEEL LIKE I KIND OF GOT THE RIGHT INFO BUT IM NOT SURE SO CAN YOU EITHER ANSWER THE QUESTION OR GIVE ME LINKS TO WEBSITES THAT MIGHT HELP!! What were the major events in Alexander the Great’s life?
asked by CONNEXUS STUDENTS 
Math
Find the vertical and horizontal asymptote of this Hint there are two HA and one VA (√16^x6+9)/9x^3+4 The square root sign is suppose to apply to everything in the parenthesis
asked by Anonymous 
Math
Let f(x)=(x^9)/x3 where x cannot equal 3 and f(x)=2x where x =3 Determine is f(x) is continuous at x=3 How do we know?
asked by Anonymous 
English
"As no more electrical fire can be thrown into the top of the bottle" Is this considered personification? I'm writing a report on Benjamin Franklin's letters sent to Peter Collinson, and am having a hard time identifying some important literary elements
asked by Rylee 
Physics
A given force F→ is located in the yzplane. It has a magnitude of 18N and is directed at a 30.0° angle clockwise from the positive yaxis. (a) Describe F→ using polar notation. (b) Describe F→ using its y and zcomponents. (c) Describe F→ using
asked by sarah 
weather
1. Which of the following is the primary control of how much water vapor the air can hold? a. Number of particulates present b. Temperature of the air c. Specific heat of water d. Amount of dry gases present answer: b 2. Which of the following would cause
asked by ~ 
Childhood Education
There is a fine line between guiding children's problem solving and interfinf with their self discovery. I am think f
asked by Betty 
Math
the figure AB = 11cm, BC = 8cm, AD = 3cm, AC = 5cm and DAC is a right angle. The size of ADC; The size of ACB; The area of the quadrilateral ABCD. tan ADC = 5/3 11^2 = 5^2+8^2  2*5*8 cos ACB Now you can figure the areas of the triangles ACD and ACB, and
asked by Kd 
Physics
An object is located at the point (−3.00m,4.00m,0.00m). A position vector connects this object to the origin. Find the magnitude of the position vector and the angle it makes with the positive xaxis. I know the magnitude is 5.00m, how do I find the
asked by sarah 
EDUCATION TECHNOLOGY
I NEED HELP WITH THIS I FEEL LIKE I KIND OF GOT THE RIGHT INFO BUT IM NOT SURE SO CAN YOU EITHER ANSWER THE QUESTION OR GIVE ME LINKS TO WEBSITES THAT MIGHT HELP!! What were the major events in Alexander the Great’s life? asked by CONNEXUS STUDENTS today
asked by CONNEXUS STUDENTS 
math
The equation y = 12x describes the amount of money Louis earns, where x is the number of hours he works and y is the amount of money he earns. The table shows the amount of money Carl earns for different numbers of hours worked. Carl’s Earnings Time (h)
asked by David 
Geography
Here's a few questions that I need help with. I included some answers to see if they are right. 1. What mathematical term defined the size across something being analyzed. Analytic 2. Give example of different analysis sizes. I need to know the answer of
asked by Imanolex 
Algebra
Doris invested some money at 7% and some money at 8%. She invested $6000 more at 8% than she did at 7%. Her total yearly interest from the two investments was $780. How much did Doris invest at each rate?
asked by Chartel 
algebra
Solve for x: x – 4(2x – 1) ≥ 2(x – 1)
asked by Mahnoor 
Math
How would I figure out the unit rate given only the below equation: y=0.6x?
asked by Patrick 
World History
Describe the impact of the Agricultural Revolution on the formation and development of permanent human settlements and technological advancements. If you could provide some websites/articles for me to do my research that would be great. Thank you :)
asked by Taryn H. 
World History
Describe the effect of the Agricultural Revolution on the creation of new government and laws in (Ancient Egypt, Nubia, Babylon, Greece or Rome). If you could provide some websites/articles for me to do my research that would be great. Thank you :)
asked by Taryn H. 
World History
Describe the effect of the Agricultural Revolution on the creation of new religion and cultures in (Ancient Egypt, Nubia, Babylon, Greece, or Rome). If you could provide some websites/articles for me to do my research that would be great. Thank you :)
asked by Taryn H. 
Math
Hello. If I have the following table: Time(x) 18 27 72 81 Distance (y) 8 12 32 36 How would I create an equation relating the variables in the table? y= Please help. I have never done this before?
asked by Patrick 
Math
Tamara has 12 coins. One quarter are dimes the and a one half of a quarters and the rest are Penney. what is the value of tamara money
asked by Anonymous 
math
The heights of four students in Mrs.Patel's class are 5 1/2 feet, 5.35 feet, 5 4/10 feet,and 5.5 feet.What is the height in the feet of the shortest student written as a decimal?
asked by lixxy 
Texas State History
At the end of the Spanish rule, which group had the largest population in Texas? A) Peninsulares B) Catholic clergy C) Anglo Americans D) American Indians *** (my answer)
asked by ILTHSM_ 
Algebra
properties
asked by Duncan 
Algebra
A machining company manufactures washers. The dimensions of the washer are 2cm for the inner circle and 4cm for the outer circle. And the inner and outer radii is positive and negative 2. The range of acceptable values is called the tolerance. Write an
asked by DJ 
Math
A Canadian goose migrated at a steady rate of 3 miles every 4 minutes. I have to complete the table below. Please help Time(min) 4 8 12 16 20 Distance (mi) 3 How would I figure out the rest of this table? Please help.
asked by Patrick 
physics
Two identical boxes with mass 10kg sit on the horizontal floor of a truck. There is friction between one of the boxes and the floor, and no friction between the other box and the floor. The two boxes are tied together with a massless string. The truck
asked by anonymous 
Chemistry
The specific heat of water is 4.184J/gc and that of aluminum is 0.897J/gc which substance will show a larger increase in temperature upon the addition of 100J of heat to 100g the aluminum or the water
asked by Kishwar 
science
A truck with a mass of 20t has a tractive resistance of 280N/t if the truck travels at a speed 72km/h. Calculate the following. a) The distance 36s. b) The power required for the speed.
asked by Nqobile 
algebra
solve for g. R=(g*s)/(g+s)
asked by M 
calculus
Let t be an angle between π and 3π/2, and suppose sec(t)=−2.6. What is tan(t)? Having a hard time with this one..
asked by sal 
Algebra
33+m=10
asked by Duncan 
Chemistry
A compound has the % composition by mass that is 87.8% C and 12.2 % H. What is the molecular formula if it has a molecular mass of 82 g/mol?
asked by Anonymous 
Physics
A soccer player kicks the ball that travels a distance of 36.0 m on a level field. The ball leaves his foot at an initial speed of (v0) and an angle of 30.0° above the ground. Find the initial speed (v0) of the ball.
asked by Alina 
Physics
A projectile is launched at an angle of 20.0° above the horizontal. What is its initial speed if it hits a target that is located a horizontal distance of 175 m from the launch point and 10.5 m above the launch level?
asked by Alina 
physics
if a ball is thrown downward from a roof top 100meters tall and hits the ground in 3 seconds how hard is it thrown?
asked by allen 
SCIENCE
A bomb of mass 5kg explosed into equal fragment.at what angle these fragments fly apart. ?
asked by RO MAN 
Math
In the cafeteria 100 milk cartons were put out for breakfast at the end of breakfast 27 remained
asked by Anonymous 
Math
How do I solve this? This is confusing. Solve the system using matrices. 3x  y  2z = 389x + 9z = 1172y + z = 16
asked by Sally123