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Autumn

Questions and answers by Autumn

Questions (106)

Pretty confusing AS Biology question:A scientist carried out an experiment to separate the organelles in an animal cell by mass.
1. 5 answers
2. 3,929 views
Ethanoic acid can be reacted with alcohols to form esters, an equilibrium mixture being formed.CH3CO2H + ROH <--> CH3CO2R + H2O
1. 4 answers
2. 3,787 views
When one mole of ammonia is heated to a given temperature, 50% of the compound dissociates and the following equilibrium is
1. 4 answers
2. 3,424 views
A certain diet requires no more than 60 units of carbohydrates, at least 45 units of protein, and at least 30 units of fat each
1. 2 answers
2. 1,319 views
What is El Nino?
1. 1 answer
2. 390 views
I need help finding a website that will tell me important events that were happening around the time of slavery. Thanks!
1. 1 answer
2. 346 views
How did the Federalists and the Antifederalists try to convince people to take their side in the debate over the Constitution?
1. 3 answers
2. 675 views
245 million years ago all of the land masses were combined to form....
1. 1 answer
2. 374 views
What is the difference between p-waves, s-waves, and surface waves? Which do the most damage? Please and thank you!
1. 4 answers
2. 1,207 views
Describe the delegates who attended the Constitutional Convention.
1. 4 answers
2. 1,022 views
One newspaper reported that the mayor received a salary increase of 5%. Another paper reported that the mayor's salary went up
1. 5 answers
2. 504 views
Write each equation in standard form (set equal to zero). Then solve by factoring.Example: x²-2x=8
1. 3 answers
2. 1,211 views
For parts (a)–(c) use the following equation: y = 2/(x + 6).(a) Find the ordered pair that represents a solution to the
1. 1 answer
2. 376 views
For parts (a)–(c) use the following equation: y = 2/(x + 6).(a) Find the ordered pair that represents a solution to the
1. 3 answers
2. 503 views
Brenda starts a merchanding business on December 1 and enters into three invfentory purchases:December 7 10 units @&6 cost
1. 2 answers
2. 538 views
a car travels 59.78 miles east in 89.67 minutes, then 89.67 miles north in 59.78 minutes, and then 29.89 miles at 59.78 degrees
1. 2 answers
2. 573 views
a car travels 59.78 miles east in 89.67 minutes, then 89.67 miles north in 59.78 minutes, and then 29.89 miles at 59.78 degrees
1. 3 answers
2. 475 views
Did Islam become more less influential in West Africa from the 700s to the 1400s?
1. 2 answers
2. 1,004 views
Part 1:A ball is thrown horizontally from the top of a building 28.6 m high. The ball strikes the ground at a point 80.3 m from
1. 2 answers
2. 614 views
Part 1:Janet jumps off a high diving platform with a horizontal velocity of 2.67 m/s and lands in the water 2.6 seconds later.
1. 2 answers
2. 577 views
The fastest recorded pitch in the MLB was thrown by Nolan Ryan in 1974. If this pitch were thrown horizontally, the ball would
1. 3 answers
2. 1,058 views
During a baseball game, a batter hits a pop-up to a fielder 94 m away.The acceleration of grvity is 9.8 m/s^2. If the ball
1. 2 answers
2. 566 views
What are the two vegetation types of Ethiopian Highlands?
1. 1 answer
2. 219 views
How would I simplify the complex fraction:3/x^3/1/x^2 ? Thanks
1. 3 answers
2. 529 views
If GDP increases by 5 percent in the same that the deficit is run, What happens to gross debt as a percentage of GDP? What
1. 2 answers
2. 579 views
Hello, I need help with this question, What factors in today's culture hinder wives from pursuing the C-H-A-I-R-S approach to a
1. 2 answers
2. 502 views
My question is what would be the constant in a basketball ofensive rebound experiment? My science q is do the amount of
1. 1 answer
2. 472 views
How did scientific discoveries change people's attitudes towards natural events and religious faith?
1. 3 answers
2. 459 views
A hummingbird has a mass of about 1.7 g. Suppose a hummingbird does 0.15 J of work against gravity, so that it ascends straight
1. 6 answers
2. 4,911 views
In 1920, the record for a race was 46.9 seconds. In 1940 it was 46.5 seconds. Let R(t)= the record in the race and t= the number
1. 1 answer
2. 403 views
How to round 63 for homework
1. 2 answers
2. 824 views
The pH of vinegar is 2.40. Calculate the concentration of hydronium ions and hyrdroxide ions in vinegar.
1. 1 answer
2. 373 views
The pH of vinegar is 2.40. Calculate the concentration of hydronium ions and hyrdroxide ions in vinegar.
1. 1 answer
2. 385 views
Talking about significant figures, my Physics textbook lists 5 rules for determining significant figures. 1) All nonzero digits
1. 2 answers
2. 575 views
14. Why is “The Divine Comedy” an allegory?Everyone dies in the end. The theme is ambiguous. All of the characters and
1. 4 answers
2. 1,341 views
The digit in the hundreds place is a square number, and it is odd.The digit in the tens place is 1 more than the square root of
1. 3 answers
2. 899 views
Melissa collected three kinds of autumn leaves when she was out walking today -elm, maple, and oak. She has 2 times as many
1. 3 answers
2. 539 views
Melissa collected three kinds of autumn leaves when she was out walking today -elm, maple, and oak. She has 2 times as many
1. 1 answer
2. 464 views
6d-3d+2d=35
1. 1 answer
2. 204 views
Sam downloaded four applications for $2.99 each to her cell phone. The remaining applications that Sam purchased cost $1.99
1. 2 answers
2. 496 views
The altitude of a plane as it begins to descend is shown by the linear equationa = 22,000 – 800m, where a is the plane’s
1. 3 answers
2. 793 views
There was a sidewalk sale at Mega Mall. Everything was marked down by30%. Rodrick bought 3 pairs of jeans originally priced at
1. 2 answers
2. 647 views
Simplify. Write the answer using positive exponents only. (x^-5y^-6/a^-5)^-3
1. 2 answers
2. 670 views
While playing lawn darts with his friend, Jack notices that when he throws a dart up at 60 degrees it travels 11 meters. How
1. 3 answers
2. 702 views
When its brakes are applied, a car moving at 10 m/s undergoes an acceleration of -1.2 m/s2. How far does the car travel before
1. 1 answer
2. 728 views
Find the radius of a cone with a height of 14 cm and a volume of 718.4 〖cm〗^3, use 3.14 for X and remember to show all work
1. 1 answer
2. 440 views
How do you write 200 7/100 as a decimal?!?
1. 3 answers
2. 379 views
1. One angle of a rhombus measures 60 degrees. If the perimeter ois 20 inches, find the length of both diagonals.2. An
1. 1 answer
2. 502 views
Which of the following tools can bd used to measure mass?A) a graduated cylinder B) a triple beam balance C) a mercury
1. 7 answers
2. 2,158 views
An ice cream shop has 19 flavors. You also have the choice of a sugar cone, waffle cone or cup. If a person orders two scoops of
1. 4 answers
2. 2,101 views
What does the term "homeostasis" mean? What is one of the mechanisms used by our bodies to maintain homeostasis?
1. 2 answers
2. 664 views
What is Oxytocin? Is this positive or negative feedback?
1. 1 answer
2. 479 views
What were the details of the Great Compromise?
1. 2 answers
2. 552 views
Many people believe that the Civil War is considered to be the worst war in American history. What is the basis for this belief
1. 2 answers
2. 765 views
Sean has $75 to spend on CDs. If each CD costs $6.98, about how many CDs can he buy?
1. 3 answers
2. 1,608 views
Anais bought 4.5 yards of ribbon. She had 3 feet 8 inches of ribbon left after trimming some curtains. How many inches of ribbon
1. 3 answers
2. 1,346 views
A moving company charges $0.60 per pound for a move from New York to Florida. A family estimates that their belongings weigh
1. 5 answers
2. 3,384 views
Is 107 X 10^4 A Scientific Notation
1. 4 answers
2. 379 views
How would you write an ionic equation for: NH2SO3H + NaOH —> NaNH2SO3 + H2O?Is it simply H+ + OH- —> H2O?
1. 3 answers
2. 1,080 views
6sin(2x)+3=0How do you find the smallest value of x in the interval 0≤x≤π for which y=0? My work so far: 6sin(2x)=-3
1. 3 answers
2. 1,016 views
Solve the equation 2cos2x = √3 for 0°≤x≤360°I did this: cos2x = √3 /2 2x=30 x=15 x=15, 165, 195, 345 Is this correct?
1. 3 answers
2. 1,721 views
Use the information below to answer this questionC(s) + O2(g) -> CO2(g) ΔH = -394 kJ/mol H2(g) + 1/2 O2(g) -> H2O(l) ΔH = -286
1. 6 answers
2. 2,912 views
Back with another question similar to the one I asked before, but this one's a bit more confusing4NH3 (g) + 5O2(g) → 4NO(g) +
1. 2 answers
2. 639 views
Back again with another problem :)How do you calculate the enthalpy change, in kJ/mol for the reaction of copper(II) sulfate?
1. 3 answers
2. 1,230 views
Convert 3.16x10^3 in standard form
1. 4 answers
2. 1,591 views
How would you differentiate this equation?1/6(2x-3)^3 -4x Here's my working u = 2x-3 y = 1/6u^3 dy/du = 1/2u^2 du/dx = 2 dy/dx =
1. 1 answer
2. 285 views
If x - y = 9, find the maximum value of xy^2Never seen this type of question before, any help? Thanks!
1. 1 answer
2. 408 views
Sulfur dioxide reacts with oxygen to form sulfur trioxide according to the equation2SO2(g) + O2(g) <-> 2SO3(g) Samples of sulfur
1. 5 answers
2. 3,833 views
A block of mass 11 kg is at rest on a rough plane inclined at 30° to the horizontal. A force acts on the block in a direction
1. 4 answers
2. 2,742 views
Relative to an origin O, the position vectors of points A and B are given byOA = 3pi + 4j + p^2k, and OB = -pi + -1j + p^2k Find
1. 4 answers
2. 1,844 views
A car of mass 0.9 tonnes is driven 200 m up a slope inclined at 5° to the horizontal. There is a resistance force of 100 N.(i)
1. 4 answers
2. 1,080 views
How would you solve this?1/2 mv^2 - 1/2 m x 25 = mg x 100sin20 I obtained this from the question: A girl on a sledge starts,
1. 5 answers
2. 589 views
Which reaction would occur more readily? Why?1) Mg + Cl2 --> MgCl2 2) 2Mg + O2 --> MgO Thanks!
1. 1 answer
2. 458 views
The first three terms of an arithmetic progression are 2x, x+4 and 2x+7 respectively. Find the value of x.I have no idea where
1. 4 answers
2. 3,998 views
If 8x + 8y = 18 and x^2 – y^2 = –3/8, what is the value of 2x – 2y?The answer is supposed to be -1/3 but I have no idea
1. 4 answers
2. 2,242 views
The chart below shows the population distribution for the 2,400 occupants of the city of Centre Hill.Adult Male Adult Female
1. 3 answers
2. 1,177 views
A pretty confusing question with weird wording:If the concentration of a compound is 10mg/ml, and its molecular weight is
1. 3 answers
2. 559 views
If x^4 - y^4 = -15 and x^2 - y^2 = -3, what is the value of x^2 + y^2?
1. 1 answer
2. 388 views
How do I go about proving that:cos(4θ) + 4cos(2θ) ≡ 8cos^4(θ) - 3 Thanks in advance!
1. 3 answers
2. 3,449 views
What mass of solid potassium sulfate, K2SO4, is used to make up exactly 100.0cm^3 of 0.100 mol/dm^3 SO4^2-?This should be a very
1. 2 answers
2. 661 views
The probability that an event A occurs is P(A) = 0.3 . The event B is independent of A and P(B) = 0.4 .a) Calculate P(A or B or
1. 4 answers
2. 3,560 views
Reposting again since my previous question may seem like it's been answered. If I shouldn't do this just let me know :)The
1. 1 answer
2. 458 views
Prove the identity cos3x ≡ 4cos^3x - 3cosxThank you so much for the help!
1. 1 answer
2. 458 views
The following table shows how the initial rate of this reaction depends on the concentrations of the two reactants[NO] [O2]
1. 7 answers
2. 1,010 views
Solve: ((2^x)-7)^2 = 1The answer should be x = 2.58 (3 s.f.) or x = 3 but I have no idea how to get there. Thanks in advance!
1. 2 answers
2. 1,276 views
Identify the substance liberated at each electrode during the electrolysis of AgNO3 with inert electrodes.I know that Ag is
1. 2 answers
2. 1,192 views
The Declaration of Independence stated that the colonists rights came from whom?
1. 2 answers
2. 562 views
How did the South Texas elite interact with the Anglo settlers?A) Anglo settlers worked for South Texas Elite B) Anglos worked
1. 2 answers
2. 520 views
Find the value of x1.92 = (0.015)^x / (0.0075)^x Thanks in advance!
1. 1 answer
2. 390 views
Together Paul and Jack earned $72 washing cars. Jack washed twice as many cars as Paul. If Paul washed 3 cars, how much did they
1. 4 answers
2. 441 views
Which of the following statements is true?A) Chemical reaction rates vary with the conditions of the change, but nuclear decay
1. 4 answers
2. 1,518 views
Ms. Sue's last words on this website were on December 7th to another student. She said, "Your Question?" Now, this might not
1. 50 answers
2. 5,447 views
Use your knowledge of the law of conservation of mass to answer the following question: In the lab, a student reacts lithium
1. 3 answers
2. 581 views
How many pounds of potting soil, which costs $0.04 per pound, should be mixed with 20 pounds of nutrient-rich soil, priced at
1. 2 answers
2. 569 views
A model rocket with mass 1 kg is launched from the ground, starting from rest, and accelerates vertically due to an upward
1. 5 answers
2. 737 views
which of the following is/are rational number(s)? 21, the square root of 5, 4/5, pi
1. 3 answers
2. 290 views
Which of the following is/are rational number(s)? (choose all that apply)21 the square root of 5 4/5 pi
1. 1 answer
2. 252 views
What is the average of 125 and 33
1. 1 answer
2. 166 views
Why are phylogenetic trees important in understanding evolutionary relationships among organisms?
1. 2 answers
2. 9,767 views
What discovery did the study of fossil horse teeth lead scientists to make?a : Early horses had a specialized diet of grass, a
1. 15 answers
2. 3,634 views

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