# Posts by chloe

Total # Posts: 575

**Science**

What form of pollution, if any, does each energy source cause? How does the economy influence energy source choices? How does location influence energy source choices?

**Health**

nutrition is the process of the body using foods that we eat in order to sustain life true or false

**Science**

2. Adding a _______________ to an electric circuit would increase the magnetic field around a wire. a.) insulator b.) solenoid c.) resistor d.) conductor My Answer: conductor

**Science -Check Answers-**

1. A kitchen ceiling light has five light bulbs on it. When one of the lights goes out, the other four bulbs stay lit. This is an example of a series circuit. True OR False My Answer: True 2. Adding a _______________ to an electric circuit would increase the magnetic field ...

**Steve, Anonymous**

Steve, Anonymous

**Math**

is it correct?

**Steve, Anonymous,**

(a) 4/16 * 7/16 = 0.109375 (b) 4/16 * 7/15 = 0.11666666666

**Steve,**

(a) 4/16 * 7/16 (b) 4/16 * 7/15 I need to find the answer?

**Math**

***PS: I can't put the diagram so I type it.*** The diagram below shows the contents of a jar from which you select marbles at random. Inside the jar there is 16 marbles. Inside the jar there is 4 red marbles. 7 blue marbles. 5 green marbles. a. What is the probability of ...

**Math**

Thanks!

**Math ~ Check Answers ~**

Is this correct? total bands: 185 P(pink) = 95/185 P(brown) = 90/185

**Math**

A box contains 95 pink rubber bands and 90 brown rubber bands. You select a rubber band at random from the box. Find each probability. Write the probability as a fraction in simplest form. a. Find the theoretical probability of selecting a pink rubber band. b. Find the ...

**Math**

A box contains 95 pink rubber bands and 90 brown rubber bands. You select a rubber band at random from the box. Find each probability. Write the probability as a fraction in simplest form. a. Find the theoretical probability of selecting a pink rubber band. b. Find the ...

**physics**

find the moment of inertia of the earth. Radius is 6,000 km and mass is 6 x 10^24 kg

**Math**

You have to choose a battery brand to use in your smoke alarm. Company A's batteries have a mean lifespan of 1.2 years, with a standard deviation of 0.1 years. Company B's batteries have a mean lifespan of 1.5 years, with a standard deviation of 0.9 years. Which brand ...

**Permutations**

1. 4! a.) 3 b.) 6 c.) 12 d.) 24****** 2. 5! a.) 25******** b.) 120 c.) 250 d.) 625 5. Five friends are having their picture taken. How many ways can the photographer arrange the friends in a row? a.) 150 b.) 100 c.) 120******* d.) 80 6. How would you apply the fundamental ...

**Math ~ Check Answers ~**

A number cube with the numbers 1 through 6 is rolled. Find P (number is greater than or equal to 3). a.) 4/6 b.) 1/6 c.) 2/6********** d.) 5/6

**state of matter**

why solid is the least amount of energy?

**Math ~ Check Answers ~**

1. There are 35 marbles in a bag: 9 blue marbles, 8 green marbles, 4 red marbles, 8 white marbles, and 6 yellow marbles. Find P (red). Write the probability as a fraction in simplest form, a decimal, and a percent. a.) 4/31, 0.129, 12.9% b.) 4/35, 0.114, 11.4%*********** c.) ...

**Chemistry**

I understand now, thanks a lot!

**Chemistry**

Given the equilibrium reaction N2(g) + 3 H2(g) <---> 2NH3(g) + heat, an increase in temperature will: a) Increase the value of K b) Decrease the value of K c) Increase or decrease the value of K depending upon the concentration of reactants d) Will have no effect on the ...

**Chemistry**

If the equilibrium constant for a reaction A + B <----> C + D is K, which is true of the equilibrium constant K* for the reaction C + D <----> A + B under the same conditions? A) K* = K B) K* = 1/K C) K* = 1 - K D) K* = 1 - (1/K) E) K* = 1 + K

**Planets- I Love Space!**

why the outer planets did not lose the lighter gases in their atmospheres.?

**Chemistry**

Na, Ca, Zn, Al, Mn

**Pyhsics**

8.3x10^3m

**Math ~ Check Answers ~ASAP**

3. In the following list of data, find the range: 21, 28, 31, 35, 39, 43, 51, 60. 35 37 39****** 40 Pat recorded the weights of the first 10 fish she caught and released at Mirror Lake this season. The weights were 8 lb, 6 lb, 9 lb, 6 lb, 7 lb, 5 lb, 7 lb, 6 lb, 23 lb, and 6 ...

**Science**

1. In the following diagram, the green ball changes direction after colliding with the red ball because the red ball has more momentum. True <---- False 2. What is the momentum of a 20.0 kg scooter traveling at 5.00 m/s. 4.00 kg m/s 20.0 kg m/s 25.0 kg m/s 100 kg m/s <...

**Science -Check Answers-**

1. In the following diagram, the green ball changes direction after colliding with the red ball because the red ball has more momentum. True <---- False 2. What is the momentum of a 20.0 kg scooter traveling at 5.00 m/s. 4.00 kg m/s 20.0 kg m/s 25.0 kg m/s 100 kg m/s <...

**Math ~ Check Answers ~**

So... is the 1st one is correct? A rectangular prism has a width of 92 ft and a volume of 240 ft^3. Find the volume of a similar prism with a width of 23 ft. Round to the nearest tenth, if necessary. •3.8 ft^3 •60 ft^3 <<<<<< •15 ft^3 •10....

**Math ~ Check Answers ~**

A rectangular prism has a width of 92 ft and a volume of 240 ft^3. Find the volume of a similar prism with a width of 23 ft. Round to the nearest tenth, if necessary. •3.8 ft^3 •60 ft^3 <<<<<< •15 ft^3 •10.4 ft^3 A pyramid has a height of...

**Math**

The diameter of a circular pizza is 24 in. How much pizza is eaten (in square inches) if half of it is consumed?

**Algebra 2 Help**

1.) Solve for x. 2x(x - 12) = -40 2.) Solve for x. 3x2 + 2x = 12 - 7x 3.) Simplify the expression. 8sqrt[-63] 4.) Find the absolute value of the complex number. Abs Val [7 + 24i] 5.) Simplify the expression. [4 - 7i] + [2 + 3i] Thank you so much!! :)

**Algebra 2**

1.) Solve for x. 2x(x - 12) = -40 2.) Solve for x. 3x2 + 2x = 12 - 7x 3.) Simplify the expression. 8sqrt[-63] 4.) Find the absolute value of the complex number. Abs Val [7 + 24i] 5.) Simplify the expression. [4 - 7i] + [2 + 3i] Thank you so much!! :)

**Math**

4 pictures

**Math ~ Check Answers ~**

? ? ? ? ? ? ? ? A system of linear equations is shown below. 5X = 3y - 2 y = X + 4 What is the x -coordinate of the solution? a.) 2 b.) 4 ***** c.) 5 d.) 1 Jean needs to graph the function below. y = 7x ^2 + 8x -6 How many times should the graph of this function intersect the ...

**Math ~ Check Answers ~**

A system of linear equations is shown below. 5X = 3y - 2 y = X + 4 What is the x -coordinate of the solution? a.) 2 b.) 4 c.) 5 d.) 1 ***** Jean needs to graph the function below. y = 7x ^2 + 8x -6 How many times should the graph of this function intersect the x-axis? a.) 3...

**Social Studies--Check My Answers Please--**

OK, thanks guys!

**Social Studies--Check My Answers Please--**

1. During the election of 1824, which candidate won the popular vote and which candidate won the presidency? a.) Andrew Jackson; John Quincy Adams ***** b.) Andrew Jackson; Andrew Jackson c.) John Quincy Adams; John Quincy Adams d.) John Quincy Adams; Henry Clay 2. Some ...

**Social Studies--Check My Answers Please--**

7. "In 1831 Lowell was little more than a factory village. Several corporations were started, and the cotton-mills belonging to them were building. Help was in great demand; and stories were told all over the country of the new factory town, and the high wages that were ...

**Social Studies--Check My Answers Please--**

OH Ms. Sue I have 3 more can you also check them too?

**Social Studies--Check My Answers Please--**

Oh really, Wow! OK, then. Thanks Ms.Sue! for checking!

**Social Studies--Check My Answers Please--**

Are my answers are correct? Please check them! 1. Which of the following helped to increase the populations of northeastern cities? A) More diversity B) successful cotton crops C) growth of factories and trade***** D) building of the Erie Canal 2. A boundary was set between ...

**Chemistry**

Yep, I caught it. Thanks for your help!

**Chemistry**

It makes senses that the molar mass would be smaller than that of CH4 if it diffuses faster. 1/2 = square root of 22/88 = 22 g/mol ?

**Chemistry**

I used the formula given and came up with 352 g/mol, would that be correct?

**Chemistry**

A gas diffuses twice as fast as CF4 (g). The molecular mass of the gas is: I'm not sure how to figure this out without the rates of diffusion.

**Math**

if a 16 ounce can of soup costs 64 cents, what is the cost for each ounce of soup?

**Earth Science**

partial freezing

**history**

thanks

**Math**

Three of these methods give the correct area of the figure. Which method does NOT?

**physics**

A 5.0 kg \rm kg, 52-cm \rm cm-diameter cylinder rotates on an axle passing through one edge. The axle is parallel to the floor. The cylinder is held with the center of mass at the same height as the axle, then released. a)What is the magnitude of the cylinder's initial ...

**SS again please help me asap**

A Spycrab, you are a life saver! thank you for the 100%

**Alg 2**

It did help. Thank you so much! cx

**Alg 2**

The value of y varies directly with x. If y = 64 when x is 16, what is x when y is 288?

**English**

In the following sentence identify the appositive or appositive phrase and the noun or pronoun defined by the appositive. Mr. Murray, the Scoutmaster, likes to hike. Appositive? Noun or pronoun defined?

**goverment**

freedom

**Chemistry**

How to calculate Q in Nernst Equations, we used 0.10M solutions in all of our half cells. Nernst equation: Ecell = E0cell - RT/nF ln Q Overall reactions: Cu(s) + Pb2+(aq) ~ Cu2+(aq) + Pb(s) and 3Pb(s) + 2Al3+ ~ 3Pb2+ 2Al(s) Thank you!

**Chemistry**

Using your experimental data, calculate E0cell. Standard voltaic cells contain 1M solutions, but we used 0.10M solutions in all of our half cells. Use the Nernst equation to calculate the standard cell potential (E0cell) from your measured Ecell and Qrxn. Data: Nernst Equation...

**Math**

An airplane is flying at an altitude of 6 miles and passes directly over a radar antenna. When the plane is 10 miles away, the radar detects that the distance is changing at a rate of 240 mph. what is the speed of the plane? This is an implicit differentiation problem

**chemistry**

No. this is the sample I did. Cu+(s)+/Cu2+aq)//Al3(aq)+/Al(s) is this right? Anode = Cu+(s)+/Cu2+(aq) - +0.337 Cathode = Al3+(aq)+/Al(s) - -1.66 Overall redox reactions: -0.337 - -1.66 = 1.323?

**chemistry**

A. Find and list all of the different half- cell combinations. Hint 15 combinations! 1. Copper/ Cu2+ 2. Lead/ Pb2+ 3. Magnesium/ Mg2+ 4. Zinc/ Zn2+ 5. Iron/Fe2+ 6. Aluminum/ Al3+ B. write the half reactions of each combination and the overall redox reaction. Please help! Thank...

**Chemistry**

What is the Ka of the amino acid serine if it is 34.5% dissociated at pH- 9.46?

**Chemistry**

ok thank you!

**Chemistry**

dG=? . how do I start this problem? Do I use dG= -RT*ln*K? dG=-(0.008314 kj/k*mol) (61+ 273.15) ln (29.24)?? I tried this and it is wrong.

**Chemistry**

DrBob222, I don't know how to solve this problem either. And yes, this is the question for this problem. I even double check it. Please help. Chloroform (CHCL3) has a normal boiling point of 61 'C and an enthalpy of vaporization of 29.24 kJ/mol. What is the value of ...

**Chemistry**

Chloroform (CHCL3) has a normal boiling point of 61 'C and an enthalpy of vaporization of 29.24 kJ/mol. What is the value of delta Gvap (in kJ) at 61'C for chloroform?

**Chemistry**

I realized where I made a mistake for this problem. This time, I got this one right. Thank you so much!

**Chemistry**

The following thermodynamic data was obtained for an unknown compound. Delta Hvap = 31.3 kj/mol and Delta S Vap= 79.7 kj/mol .Calculate the normal boiling point of this compound in Celcius.. Thank you! Chemistry - DrBob222, Tuesday, April 30, 2013 at 12:31am dG = dHvap - ...

**Chemistry**

At 20 degree celsius, Ka for an unknown monoprotic weak acid is 0.00088. Calculate the Delta G (in kJ/mol) for the reaction of this unknown acid with water. HA(aq) + H2O(l) <--> H3O+(aq) + A-(aq)

**chemistry**

Calculate the enthalpy of fusion of naphthalene (C10H8) given that its melting point is 128 Celsius and its entropy of fusion is 47.7 J (k*mol) .

**chemistry**

Given that for the vaporization of benzene Hvap= 30.7 kj/mol and Svap= 87.0 J(K * mol) , calculate Delta G (in kJ/mol) for the vaporization of benzene at 13 Celcius.

**Chemistry**

The following thermodynamic data was obtained for an unknown compound. Delta Hvap = 31.3 kj/mol and Delta S Vap= 79.7 kj/mol .Calculate the normal boiling point of this compound in Celcius.. Thank you!

**Chemistry**

Calculate the molar solubility of MgCO3 in a solution that already contains 1.7×10−3 M sodium carbonate. MgCO3 Ksp = 6.82 x 10-6 IMPORTANT NOTE: You must use the quadratic equation to solve this problem. (DrBob222- thank you so much for all your help!)

**Chemistry**

how did you get (that's 0.17M x 1/2 = 0.085M)

**Chemistry**

What is the ph at the equivalence point for a titration of 250 mL of 0.17M piperidine with 0.17 M nitric acid. (piperidine: Kb = 1.3 x 10-3)

**Chemistry**

Consider the titration of 41.2ml of 0.230 M HF with 0.220 M NaOH . Calculate the ph after the addition of 11.9ml of sodium hydroxide.(HF: Ka = 3.50 x 10-4) Please, I need step by step on on how to solve this type of problem. Thank you very much!

**Chemistry**

A 17.6ml sample of a monoprotic acid is titrated with 0.212M NaOH. If 69.2ml of base is required to reach the equivalence point, what is the concentration of the acid?

**social studies**

what wiped out most of the indigenous population of australia

**Physics**

Sammy Sosa

**Math**

There are 16 cubic boxes of erasers in a case. What are all the possible dimensions for a case of erasers ? please help need in 30 minutes or less so confused help please thanks

**math**

2 minutes because 8 divided by 4 = 2

**math**

12

**Chemistry**

what is the freezing point of 16.7g of LiCl in 136g of water, assuming complete dissociation for water kf= -1.86/mol

**Chemistry**

what is the freezing point of 16.7g of LiCl in 136g of water, assuming complete dissociation for water kf= -1.86/mol

**Chemistry**

what is the freezing point of 16.7g of LiCl in 136g of water, assuming complete dissociation for water kf= -1.86/mol

**Chemistry**

what is the freezing point of 16.7g of LiCl in 136g of water, assuming complete dissociation for water kf= -1.86/mol

**CSU**

what is the freezing point of 16.7g of LiCl in 136g of water, assuming complete dissociation for water kf= -1.86/mol

**Math-grade 4**

thank you ms. sue.my mom said the same thing.

**Math-grade 4**

I have 12 with a remainder of 3. my teacher wants us to round and estimate. please help! do I round it to 7 divided by 70?

**Math-grade 4**

what is the estimated quotient of 6 divided into 75?

**math**

katie is 4 years younger than sylvia. let k represent katie's age and let s represent slyvia's age.

**Math**

lilly is correct, not rae.

**algebra**

It's m-3

**MATHS**

Is there any reason why f(g)=g^2+3 why do we replace the x with g? Sorry steve im trying my hardest to understand this

**MATHS**

Thank you steve It says i need to find f(g), i got a different result for some reason help please! And also in the second part, how did you get g^-1 = (x-1)/2 Thank you steve x

**MATHS**

Critical help please. Level 3 maths algebraic methods is really hard. Q) Two functions f and g are defined by f:x (arrow) x^2 + 3 g:x (arrow) 2x+1 Find a) the function fg b) solve the equation f(x)=12g^-1(x) I need to show my working out, please help someone

**Algebra 1**

Which one is it? A or D?

**Maths**

If tom got 200 euro for his birthday. He spent 1.0 how much did he spend?

**English**

What type of poem is this ? We found his flag one bitter morning And knew our hopes had come to woe. We had come pursuing glory But ended freezing in the snow. 1. The stanza of the poem offers an example of (1 point) slant rhyme. end rhyme. perfect rhyme. * internal rhyme. I ...

**science**

your a poo