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Chemistry
1) How does the atomic radius change from left to right across a period in the periodic table? A) It tends to decrease*** B)It tends to increase C) It first increases, then decreases D) It first decreases, then increases 2) What is the charge of a cation? A) A positive charge...

Science (Chemistry) Ratio of mole
You measured out 0.101g of Mg. You heat the sample and measure out 0.234 of the magnesium oxide compound. Given your data, what us the empirical formula for the Mg(x)O(y)? x and y are ratio x:y If I'm doing this correctly, I divided 0.101g of Mg/24.31g of Mg = .00415 mol Mg ...

American History
Check my answers? 1. In what way was the government of ancient Athens different from the united states A) Athens was a direct democracy in which citizens ** B) Athens was an oligarchy ruled by the wealthy members of the council of five hundred C) Athens was a republic in which...

history
which of the following was a law established by the northwest ordinance? A.only territories with a population of at least 60,000 can apply for state hold B.the education would be paid for by the central government. C.anyone who escapes slavery would be guaranteed freedom D.new...

English
1. Do you remember the day when we met first? 1-1. Do you remember when we met first? 2. Do you remember the day on which when we dmet first? (Can we use #1-1?) 3. Tell me the reason why you were late. 4. Tell me why you were late. (We can delete 'the reason' in Sentence 3. ...

Chem 125
Three bulbs are connected by tubing, and the tubing is evacuated. The volume of the tubing is 27.0 mL. The first bulb has a volume of 37.0 mL and contains 5.65 atm of argon, the second bulb has a volume of 250 mL and contains 2.16 atm of neon, and the third bulb has a volume ...

phy 101
A 2.0 kg mass traveling at 3.0 m/s strikes another 2.0 kg mass traveling at -1.0 m/s. They collide and have a complete elastic collision. If the second mass moves at 3.0 m/s after the collision, what does the first mass do?

Math
The first term of a GP is 64 and the common ratio is 1/2.How many terms must be added to obtain a total of 127 1/2?

Physics
If someone pushes on a box on a horizontal floor with a horizontal force of 17.8 N, but the box does not move, what is the static friction (Fs) between the box and the floor? Explain. The next question is: If the box just starts to move with a horizontal force of 29.5 N, what ...

english books
Who was the first to challenge the book The Awakening.

Math
The first three terms of an AP are x ,2x+1 and 5x-1.Find the value of x and the sum of the first 10 terms

MATH
During the 1st year at university, Erica¡¦s father had been sending her $1,000 per month for incidental expenses.Starting from the 2nd academic year, her father decided instead to make a deposit into a savings account on August 1st every year so that Erica could ...

Fermats Little Theorem
Good morning, Just working through an example but ive gotten stuck and need some help. So find the least residue of 8^123 Mod 61 So 8^60 = 1 (mod 61) 8^120 = (8^60)^2 = 1^2 = 1 (mod 61) 123 = 2*60+3 So 8^2*60+3 = (8^60)^2 x 8^3 = 1^2 x 8^3 = 1 x 512 = 512 Can anyone please let...

qmds
During the 1st year at university, Erica¡¦s father had been sending her $1,000 per month for incidental expenses.Starting from the 2nd academic year, her father decided instead to make a deposit into a savings account on August 1st every year so that Erica could ...

Math
Lani, Sue, and Jill begin jogging around a quarter-mile track at the same time. Lani takes 2 minutes to complete each lap, Sue takes 3 minutes and Jill takes 4 minutes. How long will they have been jogging when they first meet up again at the point where they began? How many ...

physics
The wavelength of first line of balmer series in hydrogen spectrum is 6563 A. Find the wavelength of first line of lyman series in the same spectrum.

Math
You are supposed to come up with an equation to solve this problem. I have figured out how to do it, just not what the equation is supposed to look like. Anyways, here is the word problem. The taxi fare in Gotham City is $2.40 for the first .5 miles, and additional mileage is ...

Social Studies PLEASE HELP ME
Asha lives in a nation that has a legislature and a prime minister. Citizens in her country vote in elections to elect their legislative representatives. Then parliament appoints the prime minister. 1: Does Asha's nation have a limited or an unlimited government? - Limited, ...

Mathematic
Determine the first three terms of the geometric progression of which the 7th term is 192 and te second term is 6

Algebra
A Theatrical Play On the first night of the school play, the Drama Club sells 44 student tickets and 55 adult tickets and they take in a total of $416.02. On the second night, they sell 75 student tickets and 37 adult tickets and take in a total of $306.20.

English
My answers are *** 10.   The author of “My Brother’s Keeper” emphasizes Jamie’s conflict by  (1 point) A. describing the car accident in detail. B. detailing Jamie’s physical appearance and good grades. C. flashing back to earlier events with his brother Ted.*** ...

chemistry
After the suction filtration, the filtrate in the suction flask contains (among other things) some dissolved product, which had failed to crystallize. Could you process this filtrate to obtain a sample of the product? Explain. Would the second crop of crystals be as pure as ...

Physics
An automobile leaves the store, first going south at 88 km/h for 2 hours, and then turns on a road heading 20 degrees east of north at 55 km/h for 1.5 hours. Calculate the (x,y) components of the net displacement of the automobile from the starting position, where the x-axis ...

math
the following table shows how long it took sara to pick tomatoes in the garden with here mother . on day 3 she picks 3 omatoes . how many minutes did it take her if she picked at the same rate as the first two days?

physics
the paris gun of world war I was a super gun capable of firing a 234lb shell about 81 miles away. these shells are also the first man made objects to make it to a stratosphere. the length of the barrel of one of these guns was about 34 mETers. a projectile fired from a paris ...

Algebra 2
The sum of three numbers is 36.the first number is two times the second number and the second number is four less than the third number. What are the numbers?

Social studies
In which order (first to last) were the following countries invaded by britan? A:Sudan;South Africa;Tanzania B:South Africa;Sudan;Tanzania C:Tanzia;Sudan;South Africa D:Tanzia;South Africa;Sudan**

chemistry,
Could you pls check back a few questions. The first 1 or 2 digits in each nmber is the family number, so the numbers do not go on a consistant trend. Thank you

LA
The following questions are from "science and the Sense of Wonder" by Asimov 1. (Part A) What is Asimovs main idea in the essay? a. Space is best apprecieated through poetry b. Poetry and science can work together c. the universe is more than beauty ***** d. Scientific ...

Geometric progression
The first term of a G.P. Is 5 and the common ratio is-2. What is the 6th term?

Geometric progresson
If a be the first term, b the nth term and p the product of n terms of G.P.,show that p2=(ab)n.

Geometric progression
First term and the sum of an infinite G.P. are 2 and 3 respectively. find the common ratio and sum upto n term.

Geometric progression
The first term of an infinite geometric progression is 1 and the sum of the terms is 13, find common ratio.

Geometric progression
The sum of an infinite g.p. whose common ratio is numerically less the 1 is 32 and sum of the first two is 24.

chemistry
When calling the families on the periodic chart by the top or first name in the column, where hydrogen is a non metal, and in family 13, where boron is a metaloid , is it correct to call those families the hydrogen or lithium family or/ and the boron family and for family 14, ...

Math
Find two algebraic expressions for the area of each figure. First, regard the figure as one large rectangle, and then regard the figure the figure as a sum of four smaller rectangles t,5,t,3

math
Find the values of x and y in the two equations below then answer the question that follows. 2^-3=1/x 7^y=1/49 What is the value of xy ? For the first problem i got 8. For the second one i got 1/343 I don't know what im doing wrong or right. Can you please show me with work.

Quick math help
Find the tenth term of the sequence: -6,1,8... Is it 57? For the sequence:2,4,8,16 the value of s4 is____. Is it 8? Find the 7th term of the sequence: 1,2,4,... Is it 64? Which term of this sequence is 275? 5,10,15,... Is it 1357? Find the 7thterm of an. Arithmetic sequence ...

Quick math help
Homework Help: Quick Math Help Posted by Anonymous on Tuesday, October 11, 2016 at 4:06pm. 1. let an=4n find the sum of the first 5 terms. How would you do this? 2. a1=3; an+1=3an+18. Find a6 How would you do this? 3. You start you 30 year career at a salary of $50,000 and ...

Social Studies
Which of the following best describes how the Intolerable Acts affected the American colonies? A.) The acts caused the colonies to set up their own militia to serve in times of emergency. B.) The acts caused the colonies to call for the First Continental Congress. C.) The acts...

maths
An ap has 15th and a common difference of -3 find the first and last term. If it. Sum is -120

Physics
What changed Newton's original work on the movement of the Moon around the Earth into the law of universal gravitation? 1) his conclusion that the same laws applied to all objects, no matter how small 2) his connection of gravitation to his first law 3) his connection of ...

Social studies
The first amendment protects which rights? Select all that apply. The right to own a gun? The right to a fair trial?** The right to practice a religion(or not)? The right to criticize the government?** The right of owning property?

English
The resolution of "The Secret Life of Walter Mitty" shows Mitty ___________. realizing for the first time that his wife is a good person. dying in a car accident while daydreaming. imagining that he is bravely facing a fire squad. finally getting over his habit of daydreaming...

Geometrc progression
The second term of a g.p. Is 27 and 7th term is 1/9. find the first trem and the common ratio

Algebra
In the U.S. during the first decade of the 2000s, live births to unmarried mothers, B(t), grew accordingly to the exponential model B(t)= 1.307×10^(6) × (1.033)^(t), where t is the number of years after 2000. What does the model predict for the number of live births to unwed...

Math
You are skier A, the first skier in a skiing event with three other skiers. Compared to your time, skier B is slower, by a time of +00:28. Skier C has a time of +2:13, and skier D has a time of -01:24. 1. Who is the fastest skier? 2. Since all times are compared to yours, what...

Physics
Suppose Jessica drops a rock from a hot air balloon 200m above the water. how long does it take the rock to fall (a) the first 100 meters and (b) the second 100 meters?

Quick Math Help
Find the tenth term of the sequence: -6,1,8... Is it 57? For the sequence:2,4,8,16 the value of s4 is____. Is it 8? Find the 7th term of the sequence: 1,2,4,... Is it 64? Which term of this sequence is 275? 5,10,15,... Is it 1357? Find the 7thterm of an. Arithmetic sequence ...

Quick Math Help
1. let an=4n find the sum of the first 5 terms. How would you do this? 2. a1=3; an+1=3an+18. Find a6 How would you do this? 3. You start you 30 year career at a salary of $50,000 and receive yearly raises of $1,000. How much money will you have earned, in total, over the 30 ...

mathe
the sum of the first 16th terms of an a.p is 240 and the sum of the next 4 terms is 220,find the first term

English
Why is it important that "The Story of an Hour" takes place in the nineteenth century? In the nineteenth century, women were not considered equal to men. *** The characters use nineteenth-century expressions that are hard to understand. *** Nowadays, people don't die in train ...

Science
The position of particle moving along x axis is given as a function of time t as x=t^2-4t+7.the distance covered by the particle in first four second is(x is in metre and t is in second). Plzz answer fastly..plzz

Quick math help
Find the sum of the first 10 positive integers Is it 110? Which term of the arithmetic sequence is 25? -2,1,4,... Is it 70? Which term of the arithmetic sequence is177? 2,9,16,... Is it 1234? Find the sum of the first 8 positive odd integers. Is it 64?

Quick math help
Find the tenth term of the sequence: -6,1,8... Is it 57? For the sequence:2,4,8,16 the value of s4 is____. Is it 8? Find the 7th term of the sequence: 1,2,4,... Is it 64? Which term of this sequence is 275? 5,10,15,... Is it 1357? Find the 7thterm of an. Arithmetic sequence ...

physics
One athlete in a race running on a long, straight track with a constant speed v1 is a distance d behind a second athlete running with a constant speed v2. Find the time t it takes the first athlete to overtake the second athlete, in terms of d, v1, and v2. At what minimum ...

Chemistry
1) The letter "p" in the symbol 4p^3 indicates the ___. A) spin of an electron B) orbital shape*** C) principal energy level D) speed of an electron 2) If the spin of one electron in an orbital is clockwise, what is the spin of the other electron in that orbital? A) Zero B) ...

pre-calc
We use the same polynomials as in the first question. Suppose that 3x^3 + 2x + 1 = (ax^2 + bx + c)(x+2) + d. Then b is equal to:

social studiess
17) James Oglethorpe wanted the Highland Scots to move to Georgia A) because they were qualified in the lumber industry. B) so that the colony would have many types of people. C) because they were experienced and skilled soldiers. D) so that they would bring Protestantism to ...

math
he last time Nkechi was at school was on Saturday. She was first absent for four days before that. Today is Tuesday, 27th of September. When was Nkechi first absent? Give the day and date.

English
export 1. When 'export' is used as a noun, the first syllable is stressed. 2. When 'export' is used as a verb, the second syllable is stressed. 3. When 'export' is used as a verb, the first syllable is stressed. --------------------- #1 is right? What about #2 and #3. I looked...

physics
As a fish jumps vertically out of the water, assume that only two significant forces act on it: an upward force F exerted by the tail fin and the downward force due to gravity. A record Chinook salmon has a length of 1.50 m and a mass of 49.5 kg. If this fish is moving upward ...

Physics
Hello, I need that someone help me with this excersise. I have to calculate (USING INTEGRATION) the motion ecuation of a particle. The excersise give me the ecuation of the velocity that is v=14t-32 , the initial time t1=3 And the initial position of the particle: X1=25 My ...

English, Language Arts
Please check my answers 1. In the play Crossroads: A Sad Vaudeville, the use of stage directions better helps the reader to observe the movements of a character. envision inside the mind of a character. understand how a character responds to a certain situation. all of the ...

physics
What changed Newton's original work on the movement of the Moon around the Earth into the law of universal gravitation? 1) his conclusion that the same laws applied to all objects, no matter how small 2) his connection of gravitation to his first law 3) his connection of ...

English
In the following literature selections,individuals experience rites of passage in various ways: The Bass, the River and Shelia Mant by W.D. Wetherell Oranges by Gary Soto I Know Why the Caged Bird Sings by Maya Angelou First Lesson by Philip Booth On Turning Ten by Billy ...

physics (super hard)
a carnival ride is designed with seats that carry two people weighing 910.0 N each. the seats itself weights 630 N.each seat is connected to central spindle by one chain and rotates on a radios of 6.07 meters. the ride is designed to rotate fast enough that the seats swing out...

English
I need to choose which 5 of these are antithesis. Please tell me if i'm correct. I put a star next to them. *A little learning is a dangerous thing, drinking deep or taste not the pierian spring *be not the first by whom the new are tried, nor yet the last to lay the old aside...

Jar Marbles
A jar contains 5 red marbles, numbered 1 to 5, and 12 blue marbles numbered 1 to 12. a) A marble is chosen at random. If you're told the marble is red, what is the probability that it has the number 3 on it? b) The first marble is replaced, and another marble is chosen at ...

physics
What changed Newton's original work on the movement of the Moon around the Earth into the law of universal gravitation? 1) his conclusion that the same laws applied to all objects, no matter how small 2) his connection of gravitation to his first law 3) his connection of ...

Help ASAP
A jar contains 5 red marbles, numbered 1 to 5, and 12 blue marbles numbered 1 to 12. a) A marble is chosen at random. If you're told the marble is red, what is the probability that it has the number 3 on it? b) The first marble is replaced, and another marble is chosen at ...

simple interest and compound interest
rajesh a money lender lends in the following manner. for the first year he charges 2% p.a, for the second year he charges 4% p.a, for the third year he charges 6% p.a and so on. if he lends a sum in this way at simple interest find the least integral number of years in which ...

physics
A stone is tied to a string (length = 0.945 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical. In the vertical case the maximum tension in ...

Trig
If angle A is 45 degrees and angle B is 60 degrees. Find sin(A)cos(B), find cos(A)sin(B), find sin(A)sin(B), and find cos(A)cos(B) The choises for the first are: A. 1/2[sin(105)+sin(345)] B. 1/2[sin(105)-sin(345)] C. 1/2[sin(345)+cos(105)] D. 1/2[sin(345)-cos(105)] You don't ...

English
Need these answered soon please! 10.   The author of “My Brother’s Keeper” emphasizes Jamie’s conflict by describing the car accident in detail.*** detailing Jamie’s physical appearance and good grades. flashing back to earlier events with his brother Ted. ...

Science
1.) Why is it important to have a quiet study space? It is easier to concentrate in a quiet space, and concentration is needed to learn. * It is easier to leave all your study material in a quiet study space so you can find it. A quiet study space prevents incorrect ...

simple interest and compound interest
rajesh a money lender lends in the following manner. for the first year he charges 2% p.a, for the second year he charges 4% p.a, for the third year he charges 6% p.a and so on. if he lends a sum in this way at simple interest find the least integral number of years in which ...

Geometry
1) What are the converse, inverse, and contrapositive of the statement? Which statements are true? If the figure is a rectangle with sides 2 cm and 3 cm, then it has a perimeter of 10cm. My A: the statement is not true. 2) What are the hypothesis and the conclusion of the ...

Math
Explain how estimating the quotient helps you place the first digit in the quotient of a division problem

English
SOMEONE PLEASE CHECK MY ANSWERS!!!!!!!!!(YOU DON'T HAVE TO TELL ME WHAT THE RIGHT ANSWER IS JUST IF ITS WRONG OR NOT)THEY ARE MARKED WITH ** 1. In the play Crossroads: A Sad Vaudeville, the use of stage directions better helps the reader to observe the movements of a character...

Social studies
2. What were some reasons that the Iroquois joined forces with the British? Select two answers. A) they were enemies with some other tribes who were fighting with the French B) the British charged lower prices than than the French and therefore trusted them more•• C) they ...

American government. Please help!
In what way was the government of ancient Athens different from the united states A) Athens was a direct democracy in which citizens B) Athens was an oligarchy ruled by the wealthy members of the council of five hundred C) Athens was a republic in which the people voted for ...

Geometry
1) What are the converse, inverse, and contrapositive of the statement? Which statements are true? If the figure is a rectangle with sides 2 cm and 3 cm, then it has a perimeter of 10cm. My A: the statement is not true. 2) What are the hypothesis and the conclusion of the ...

Math
How do I solve the following word problem : A satellite orbits Earth in a circular path with equation x squared + y squared = 1.44 times 10 to the power of 8. With distances measured in kilometers. Another satellite orbiting in the same plane passes through the point (8000,...

Physics
A circular track has several concentric rings where people can run at their leisure. Phil runs on the outermost track with radius rP while Annie runs on an inner track with radius rA = 0.90 rP. The runners start side by side, along a radial line, and run at the same speed in a...

SS Checj My ANSWERS Please
Part A What is the basic independent unit of world politics? a) country b) province c) nation* d) organization Part B Which of the following groups is an example of the basic unit you selected in the previous question? a) people who share a common language b) people who choose...

math
Let S be the locus of all points (x, y) in the first quadrant such that (x/t)+(y/(1− t))= 1 for some t with 0<t<1. Find the area of S.

Social Studies
The First Amendment protects which rights? (Select 2) - the right to own a gun - the right to a fair trial ** - the right to practice a religion (or not) ** - the right to criticize the government - the right of owning property help

First person? - Language Arts
Hi, okay so when I write in first person do I call myself "I" or "Cassidy"?

Engineering Linear Equation
At your initial meeting with your business partners for CellGenTech, you propose that the rate of change in the number of newly introduced cell lines that the company scientists should be able to produce should be proportional to the number of cell lines. The company initially...

American Government
American foreign aid might be used to support which of the following foreign policy? A) Deterrence B) Containment C) Collective Security D) Isolationism My guess is B or possibly C? Definitely not A or D.

PLEASE HELP HISTORY
In what way was the government of ancient Athens different from the united states A) Athens was a direct democracy in which citizens B) Athens was an oligarchy ruled by the wealthy members of the council of five hundred C) Athens was a republic in which the people voted for ...

Science
Two boys A and B are at two diametrically opposite points on a circle. At one instant the two start running on the circle; A anticlockwise with constant speed v and B clockwise with constant speed 2v. In 2 minutes, they pass each other for the first time. How much later will ...

percentage
There are two distinct natural numbers. Each is first increased by 10 then by same percentage as each was increased for the first time. Each number finally results in 72 Find the difference between the numbers. i have received your answer as your faculty posted the answer but ...

Social studies
How did George Washington create and shape our community? would these be a few ways he created a cabinet system he created the first bank he set the term limit of the president

Physics
usain bolt set the world record for the 100m dash, proving to be the fastest man in history, with a time of 9.58s. what was bolt's average speed in miles per hour? (his initial speed was 100m/9.58s I got 23.35 mph for this I need help with this. VVVVVVVVVVVVVV assume that ...

Geography
1. Which group of colonists established the first free public education system? A. Spanish colonists B. New England colonists C. Middle state colonists D. Southern colonists 2. Of the following, which influenced the idea of self-government in the colonies? Select all they ...

physics
An object initially at rest on a horizontal OX axis explodes into two pieces . One piece moves just after explosion along the axis OX with a speed of 6m/s. What are the direction and the magnitude of the velocity of the second piece whose mass is three times that of the first?

physics
How do you find the scalar product of two vectors, A=8m along the y-axis in the negative direction and B=15m, 30 degrees from the y-axis in the first quadrant. Thanks!

physics
Consider a stationary skater of mass 60 kg. Another skater of mass 40kg rushes and holds the first at a speed of 12km/hr. Both skaters hold together and move as one system (S) with a speed V. a) Determine V. b) Determine the kinetic energy of (S) before and after collision.

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