# Shay

Popular questions and responses by Shay-
## chemistry

Write the formulas of the compound Al+3 formed by specified cations with the following anions:OH-, NO3-, CO3-2,HSO4-, PO4-3 . Use the given order of anions

*asked on September 27, 2012* -
## chemistry

For each of the following bonds, indicate the positive end with \delta^{+} and the negative end with \delta^{-}. Write an arrow to show the dipole for each. 1. Si-Cl 2. Se-F 3. Br-F 4. N-H 5. N-P

*asked on September 29, 2012* -
## chemistry

What two conditions necessary for molecules to be polar? Her's my answer pls check. First, at least one covalent bond in the molecule has to be a polar covalent bond. For a bond to be polar, there must be a difference in the electronegativities of the two

*asked on October 5, 2012* -
## Geometry

Write a rule in function notation to describe the transformation that is a reflection across the y-axis. A. Rx-0(X,Y) B. Ry-0(X,Y) C. Ry-x(X,Y) D. Rx--1(X,Y)

*asked on March 27, 2014* -
## Algebra

Graph the line whose x-intercept is -8 and whose y-intercept is -7

*asked on April 22, 2011* -
## chemistry

Write the formulas of the compound NH4+ formed by specified cations with the following anions:OH-, NO3-, CO3-2,HSO4-, PO4-3 . Use the given order of anions

*asked on September 27, 2012* -
## chemistry

When californium-249 is bombarded by oxygen-18, a new isotope and four neutrons are produced. Express your answer as a nuclear equation.

*asked on September 26, 2012* -
## chemistry

The half-life for the radioactive decay of calcium-47 is 4.5 days.If a sample has an activity of 4.00uCi after 13.5 days, what was the initial activity of the sample?

*asked on September 26, 2012* -
## chemistry

Radon-222 undergoes alpha decay.what is the nuclear equation

*asked on September 26, 2012* -
## physics

What is the kinetic energy of a 20 kg dog that is running at a speed of 7.3 m/s (about 16 mi/h)?

*asked on January 27, 2011* -
## everglades

Polygon ABCD is reflected and dilated to give polygon PQRS. The coordinates of the preimage are (2, 2), (6, 8), (12, 8), and (16, 2). The coordinates of the image are (11, 15), (9, 12), (6, 12), and (4, 15). What is the scale factor of the dilation? 0.25

*asked on April 15, 2015* -
## chemistry

is IBr a hydrogen bonding or dipole-dipole interactions or dispersion forces

*asked on September 28, 2012* -
## LA Check please

which is the best paraphrase of these lines from "January"? Fat Snowy Footsteps Track the floor, A)Thick, snowy footprints show where animals walked B)Thick, snowy outlines of feet mark the floor ****** C)Large snow boots lie on the floor of the house D)A

*asked on January 30, 2015* -
## chemistry

How much in $ is one MOLE of pennies?

*asked on October 9, 2012* -
## Physics

Please check my answers: The voltage across a 10-ohm resistor carrying 3 amps must be? I got 30 volts-v=?, I=3 amps, R= 16 ohm. v= 30 amps * 10 ohm=30 volts A 4-ohm resistor is connected in parallel with a 6 ohm resistor. What is the total resistance of

*asked on October 24, 2007* -
## Chem Electron Config

S2- Cu+ Sn2+ O2- A 1s22s22p63s23p63d10 B. 2s2 C. 1s22s22p63s23p4 D. 1s22s22p63s23p63d104s1 E. 1s2 F. 1s22s22p63s23p64s23d104p65s24d10 G. 1s22s22p63s23p64s23d104p64d105s25p2 H. 1s22s22p4 I. 1s22s22p6 J. none of the above Choose from the list the correct

*asked on October 18, 2012* -
## chemistry

Write the formulas of the compound Al3+ formed by specified cations with the following anions:OH-, NO3-, CO3-2,HSO4-, PO4-3 . Use the given order of anions

*asked on September 27, 2012* -
## Language arts

how does Squeaky feel about taking care of Raymond? A) She complains about it. B) It makes her feel important. C) She ignores him. D) She feels protective of him.***

*asked on March 7, 2019* -
## physics

Car A is travelling at 22.0 m/s and car B at 29.0 m/s. Car A is 300 m behind Car B when the drive of car A accelerates his car with an acceleration of2.4 m/s2. How long does it take Car A to overtake Car B?

*asked on June 27, 2015* -
## math

A raffle has a $500 first prize, two $100 second prizes and five $25 third prizes. If 500 tickets are sold for $5 each find the expected value of buying a single ticket.

*asked on July 10, 2011* -
## Technology

Which of the following is one way to assess whether or not a learning game is effective? A.Being able to win the game B.Doing the quiz before and after the game to see what you have learned.*** C.Making it difficult to win the game D.Simulating winning

*asked on March 6, 2019* -
## Economics

The accompanying table shows a car manufacturer’s total cost of producing cars: Qty |TC| Variable Costs| Avg. Var. Costs| Avg. Total Costs| Avg. Fixed Costs 0 |$500,000| ---- | ---- | ---- |---- | 1 |540,000 | 2 |560,000 | 3 |570,000 | 4 |590,000 | 5

*asked on May 25, 2011* -
## algebra

P=b+2s Solve for s

*asked on April 21, 2011* -
## Pre calculus

Find cos theta and cot theta if sin =1/4 and tan theta

*asked on September 8, 2019* -
## math

Justin writes the letters I-L-L-I-N-O-I-S on cards and then places the cards in a hat. What is the probability of picking an N? 8/1 7/1 1/8 1/7

*asked on March 5, 2019* -
## geometry

In triangle GHJ, GH=32, HJ=63, and m

*asked on March 27, 2014* -
## Math

Consider the congruence 6x=15(mod 21). How many solutions does the congruence have? What are all the solutions?

*asked on August 2, 2012* -
## Math

Each exterior angle of a regular polygon is 15 degrees. How many sides does the polygon have? and What is the sum of the interior angles? Since this is not my area of expertise, I searched Google under the key words "polygon angles" to get these possible

*asked on April 4, 2007* -
## math

simplify the following expressions involving complex numbers. (3+2i)-(-7-i) is i like x? and how would this work i know that you do this: (3+2i)(7+i) to get rid of the sign between the expressions. but then what?

*asked on January 18, 2007* -
## Chemistry

A rectangular solid of unknown density is 6cm long, 3cm high, and 7cm wide. The mass of this solid is 250g. Calculate the density.

*asked on September 11, 2016* -
## Social Studies

Compare and contrast the climates of the mainland and the islands of Southeast Asia

*asked on May 18, 2015* -
## language arts

The italicized words make up which type of verbal phrase? Turning the corner, Kate bumped into David. A. Split infinitive B. Gerund C. Infinitive D. Participial

*asked on December 23, 2013* -
## solid mensuration

What is the area of a section bounded by a closed elliptical figure whose major and minor segments measure 60 m and 40 m, respectively?

*asked on August 19, 2013* -
## physics

If the water had lost 12000 joules and the calorimeter gained 1300 joules as the temperature of both rock and calorimeter increased from 22°C to 73°C and the mass of rock in the calorimeter was 185 grams, what is the specific heat, c, of the rock

*asked on April 1, 2013* -
## pre- algebra 1

Jose has 9 more comic books than Robin.Robin has 5 more comic books than Lee. If jose has 23 comic books,how many comic books dose Robin have? How many comic books dose Lee have?

*asked on November 17, 2012* -
## Chemistry

which sign of chemical reaction is not detectable by sight?

*asked on October 3, 2012* -
## chemistry

what is the lewis dot structure for BN

*asked on October 2, 2012* -
## chemistry

Write the formulas of the compounds formed Pb+4 with the following anions:OH-, NO3- , CO3(2-), HSO4- , PO4{3-} . Use the given order of anions.

*asked on October 2, 2012* -
## physics

The tops of the towers of the golden gate bridge in san Francisco, are 227m above the water. suppose a worker drops a 655g wrench from the top of a tower. if the average force of air resistance is 2.20 percent of the force of free fall what will the

*asked on February 7, 2011* -
## world geography

how did deng's four modernizations program greatly increase china's farm production

*asked on April 19, 2010* -
## algebra

A ball is thrown straight up. Its height, h(in metres), after t seconds is given by h=-5t^2+10t+2. To the nearest tenth of a second, when is the ball 6m above the ground? Explain why there are two answers. you have to equate h to 6: h = 6 ----> 5t^2+10t+2

*asked on January 18, 2007* -
## Math

A plane is flying with an airspeed of 190 miles per hour and heading 140°. The wind currents are running at 25 miles per hour at 165° clockwise from due north. Use vectors to find the true course and ground speed of the plane. (Round your answers to the

*asked on March 2, 2020* -
## Chemistry

The following solutions are combined in a calorimeter to determine the enthalpy of the neutralization reaction. 100.0 mL sodium hydroxide, NaOH, of unknown concentration an excess of 1.3732 M hydrochloric acid, HCl. The experimental value for q is

*asked on January 25, 2020* -
## Chemistry

Consider the neutralization between the following two solutions: 100.0 mL 0.9285 M hydrochloric acid, HCl 150.0 mL 1.8269 M sodium hydroxide, NaOH How many moles of water are produced by this neutralization?

*asked on January 25, 2020* -
## Physics

A state trooper’s car sends out a radar signal at a frequency of 14 GHz. Find the wavelength of this signal. The wave speed is 2.998 × 108 m/s. Answer in units of m

*asked on April 14, 2019* -
## English

Why does Squeaky not know at first who has won the race in "Raymonds Run"? A. Raymond has climbed a fence*** B. The may pole gets in the way C. The finish is very close D. Mr. Person speaks to softly

*asked on March 7, 2019* -
## math 107

Suppose you want to have $600,000 for retirement in 35 years. Your account earns 7% interest. a) How much would you need to deposit in the account each month? $ b) How much interest will you earn?

*asked on May 1, 2017* -
## math

your cellphone plan costs $24.99 per month plus $0.11 for each text message you send or receive. you have at most $28 to spend on your cellphone bill. what is the maximum number of text messages that you can send or receive next month

*asked on February 27, 2017* -
## math

You are buying balloons for a pary. A small balloon cost $2. A large balloon cost $5. Write an algebraic expression for the cost of x small balloons and y large balloons. What is the answer?

*asked on November 2, 2015* -
## science

What can happen to an animal species if it cannot adapt to changes taking place in its habitat?

*asked on May 19, 2015* -
## Algebra

Question Part Points Find the monthly payment for the loan. (Round your answer to the nearest cent.) A $118,000 home bought with a 20% down payment and the balance financed for 30 years at 10.5%

*asked on December 21, 2014* -
## Chemistry

Po-210 Ia an alpha emitter with a half-life of 138 days. how many grams of Po-210 remain after 552 days if the sample initially contained 5.80g of Po-210?

*asked on October 20, 2014* -
## Math/209

Dimensions of a Box A box is made from a rectangular piece of metal with length 50 inches and width 40 inches by cutting out square corners of length x and folding up the sides. (a) Write an expression that gives the surface area of the inside of the box.

*asked on March 12, 2013* -
## pre-algebra

Use algebra tiles to find the difference. Let one white tile equal +1and one black tile equal -1.6-(-9) Thanks

*asked on November 17, 2012* -
## chemistry

What is the complete ionic equation for the double displacement reaction: CuNO3(aq) + K2S(aq)= what is the chemical name and formula of this chemical reaction? plsss. need help

*asked on October 3, 2012* -
## chemistry

decomposition of water to form elemental Hydrogen and Oxygen gas. What will be the balanced chemical equation, type of reaction and the driving force of the reaction?

*asked on October 3, 2012* -
## chemistry

If the boron nitride molecule,BN, were to form, what would its structure look like? pls. need help

*asked on September 28, 2012* -
## chemistry

Write the formulas of the compound Pb+4 formed by specified cations with the following anions:OH-, NO3-, CO3-2,HSO4-, PO4-3 . Use the given order of anions

*asked on September 27, 2012* -
## chemistry

Technetium-99m is an ideal radioisotope for scanning organs because it has a half-life of 6.0 {\rm hr} and is a pure gamma emitter. Suppose that 280{\rm mg} were prepared in the technetium generator this morning. How many milligrams would remain after the

*asked on September 26, 2012* -
## math, trig

Graph one period of the following function. Show all work . y=2sinx+2cosx

*asked on April 18, 2012* -
## Math

Find how much money there will be in the account after the given number of years. Principle $8500 Rate 4% Coumpounded quarterly Time 4 yeats A=8500(1+.04/4)raised to 40th power A=8500(1.01)raised to 40th power I am stuck here, how do you raise to the 40th

*asked on August 27, 2011* -
## science

Is it possible to titrate folic acid?

*asked on October 9, 2008* -
## Science

How does elevation affect speed of an object

*asked on September 18, 2008* -
## Geometry

Fibonacci sequnce has this pattern: 1,1,2,3,5,8,13,21,34,55,...... each number is achieved by adding the previous number to the current number (1+1=2, 2+1=3, 3+2=5,....) List the first eight terms of the sequence formed by finding the differences of

*asked on August 25, 2008* -
## physics

Can a convex lens be used to magnify an image, "shrink" an image, or both? Explain.

*asked on April 16, 2008* -
## Algebra

The size of the beaver population at a national park increases at the rate of 5.1% per year. If the size of the current population is 151, find how many beavers there should be in 4 years. Use the function f(x)=151e^0.051t and round to the nearest whole

*asked on October 25, 2007* -
## conjectures

I'm finishing my math 20 Pure. This is my last 20 course then i have 30's. Also I have to work a full time job so that I can live on my own with my boy. So it is tough but I'm doing alright. What about you? wow, okay i have no idea what all that is but

*asked on February 25, 2007* -
## conjectures

Evaluate the following sums: 1 1+8 1+8+27 1+8+27+64 Add two more line to the list, and make a conjecture about the sums you obtained. this is a pattern. if you look closely than you'll see each number is a product of another number cubed.

*asked on February 25, 2007* -
## algebra, please help.

Maurice drove 400 km from Edmonton to Battleford in 1 hour less time than it took Martin to drive the same route from Battleford to Edmonton. If Maurice drove 20 km/h faster than Martin, at what speed did each of them drive? Show a complete algebraic

*asked on February 12, 2007* -
## math

A ball is thrown straight up. Its height, h(in metres), after t seconds is given by h=-5t^2+10t+2. To the nearest tenth of a second, when is the ball 6m above the ground? Explain why there are two answers. I don't get how to calculate it. Please help.

*asked on January 18, 2007* -
## Chemistry

What are the values of q, w, ΔU, ΔH, ΔS, ΔSsurr, and ΔSuniv for the following constant pressure process for a system containing 0.956 moles of CH3OH ? CH3OH(g, 122.0 ºC, 1.00 atm) ⟶ CH3OH(l, 34.0 ºC, 1.00 atm) Assume that CH3OH(g) behaves as an

*asked on February 2, 2020* -
## chemistry

One mole of O2(g) undergoes the following change in state. O2(g, 299 K, 4.38 bar) ⟶ O2(g, 252 K, 6.79 bar) What is ΔS for the gas? Assume ideal gas behaviour. The constant pressure molar heat capacity for O2(g) is Cp,m = 29.10 J K−1 mol−1.

*asked on February 2, 2020* -
## chemistry

A sample of gas is compressed from 12.93 L to 3.83 L using a constant external pressure of 4.89 atm. At the same time, 1,957 J of heat flows into the surroundings. What is the internal energy change for the gas?

*asked on February 1, 2020* -
## chemistry

What is w when 3.93 kg of H2O(l), initially at 25.0 ºC, is converted into water vapour at 157 ºC against a constant external pressure of 1.00 atm? Assume that the vapour behaves ideally and that the density of liquid water is 1.00 g/mL.

*asked on February 1, 2020* -
## Social studies

What were some influences on self-government? Select all that apply. ~Commentaries on the laws of England ~ The Columbian bill of rights ~English bill of rights ~ Poor Richards almanac

*asked on September 4, 2019* -
## statistics

a line of regression y =-1.240 +7.07x is the best fit line for a set of data comparing airfare with 30 days notice and one-day notice. find the best-predicted cost of a ticket purchased one day in advance given that the cost of the ticket is $300 if

*asked on March 15, 2019* -
## math

find the volume of the cylinder. use 3.14 for pi the top is 34 and the bottom is 27

*asked on February 21, 2019* -
## math

Sara needs to cover the top and sides of the cylinder below. 8 12 about how many square inches of paper will Sara need? 352 402 804 1005

*asked on February 21, 2019* -
## Managerial finance

Your company contemplates buying a computer based inventory management system for 200 000. It will depreciated on a straight line basis to zero over its 4 year life span, when it will be sold for 30 000. the system will save the firm 60 000 pre-tax (EBIT)

*asked on August 7, 2018* -
## math 107

You deposit $4000 each year into an account earning 6% interest compounded annually. How much will you have in the account in 30 years?

*asked on May 1, 2017* -
## Algebra

Can somebody please help me with solving this and show steps if they can. Solve the equation. Check for extraneous solutions. 9|9-8X|=2X+3 For my answer I got X=-1 I divided by 9 on both sides I got 8X=2X-6 Then I divided by 6 on both sides and got X=-1

*asked on November 16, 2016* -
## Maths

There are Number cards ”3”、”4”、”5” with 10 cards each ，choose any 8 cards to sum up to 31,then what is the maximum number of cards “3” in the combination?

*asked on November 11, 2016* -
## 3rd grade Math

Allie was making a cookie recipe that called for 30 chocolate chips. She wants to make 2 batches of cookies. How many chocolate chips does she need? 1 group = 30 30+30=60 or 2x30=60 ?

*asked on October 30, 2016* -
## Algebra

If x pounds of cashews valued at $6.00 per pound are to be mixed with y pounds of peanuts valued at $4.00 per pound to obtain a 40 pound cashew-peanut mixture. Find x and y so that when the mix is sold for $4.75 per pound, the same amount of revenue is

*asked on October 13, 2016* -
## Organic chemistry

An unknown compound (x) melts at 60°C and is mixed with a compound (y) that melts at 45°C and is soluble in x. Will the Melting point for the mixture start below 45°? I think so, because if you look at ice and salt for an example, salt has a way higher

*asked on September 21, 2016* -
## pysical science

An automobile with a mass of 1258 kg accelerates at a rate of 5 m/s² in the forward direction. What is the net force acting on the automobile?

*asked on May 11, 2016* -
## Chemistry

At 700 k the equilibrium constant Kc for the reaction between NO(g) and O2(g) forming NO2(g) is 8.7*10^6. The rate constant for the reverse reaction at this temperature is 0.54 M^(-1)s^(-1). What is the value of the rate constant for the forward reaction

*asked on March 12, 2016* -
## math

Dan has walked 1/3 of the way to school. What fraction describes how far he still has to go? Is it 1/4,1/2,2/3,3/1

*asked on March 8, 2016* -
## Math

Ms. Williams has 3 liters of lemonade. She wants to divide the lemonade into eight portions to give her 8 grandchildren. How can she divide the lemonade into eight equal portions

*asked on December 15, 2015* -
## algebra2

Use the four functions below for this question: f(x) g(x) h(x) j(x) Jesse got $5 from his dad and he makes $2 each time he walks the neighbor's dog. x g(x) –2 –1 2 –9 6 –17 j(x) = 2x – 5 Compare and contrast these four functions using complete

*asked on November 1, 2015* -
## science

How would the ecosystem’s carrying capacity for a species change, if the species cannot adapt to changes of habitat?

*asked on May 19, 2015* -
## Science

are animal species just any kind of animals.

*asked on May 15, 2015* -
## Social Studies

Beginning in the 1600s, the Tokugawa shoguns who ruled Japan tried to maintain stability and order by A. increasing trade with Europeans. B. conquering nearby countries to creat barriers to invasion. C. developing a new style of writing that was not

*asked on April 21, 2015* -
## math

A rectangular piece of construction paper is 11 inches long and 8 inches wide. How could it be cut to make a rectangle that has an area of 32 square inches?

*asked on April 7, 2015* -
## Psychology

Within each Gene element of DNA are arranged in a particular proteins, this code effect every aspect of the body from structure to chemical and keeps it running process describes what?

*asked on March 17, 2015* -
## math proportions

At a certain time of the day, a 5 foot 1 inch woman casts a 3 foot 4 inch shadow. How tall is a nearby tree that casts a 12 foot 10 inch shadow at the same time of day? Answer in feet and inches. Do not round until the final answer. Then round to the

*asked on February 26, 2015* -
## CHEMISTRY

What should be observed during titration? My answer: We observe the change in color and change in turbidity of the sol'n. Am I right? Please add more things to be observed during titration. THANK YOU!

*asked on February 23, 2015* -
## CHEMISTRY

Cite three methods of analysis of a substance from a given sple by titrimetric method of analysis. My answer is: -direct method -indirect method -back titration method Is it right??

*asked on February 23, 2015* -
## physics

Joel is walking down a street and sees a 115 ft tall building in front of him. He stops 190 feet from the base of the building at the tip of the building's shadow. Round answers to three decimal places.

*asked on February 22, 2015* -
## algebra 2

Robert loves to dive . he joined the diving team . the diving board is feet above the water . if he jumps off the diving board as high as he can ( 10ft/s ) .how high above the water does he get ? and how long is he in mid air before he hits the water ?

*asked on January 27, 2015*