Ivy

This page lists questions and answers that were posted by visitors named Ivy.

Questions

The following questions were asked by visitors named Ivy.

Write the equation of the tangent at (2,2) to the curve x^2-2xy+y^2+2x+y-6=0 Can anyone please give me some ideas to do it?Thanks!

A cobble-sized sediment is naturally broken off the steep sides of a valley in a mountainous region. The sediment falls onto a glacier that occupies much of the valley. Over several years, the sediment “falls through” the glacier and is then dragged along...

1. Lead (Pb), has a density of 11.35 g/ml. If I have 3.45 cc of lead, what is the weight in grams? 4. I am traveling at 100 mph per hour before getting pulled over. Convert this into meters Per second. (A) 161 m/s (C) 161000 m/s (B) 4.44 m/s (D) 44.4 m/s...

which illustrates in an increase in potential energy? a. a firecracker explodes b. a person climbs a set of stairs c. a wind-up toy winding down d. an apple dropping from a tree

Why is it important to clear a neurotransmitter quickly from the synaptic cleft? What might happen to the target muscle cell if the neurotransmitter were NOT cleared? What might happen if neurotransmitter reuptake occured too quickly?

What condition triggers its release(e.g., glucose in blood) 1.Thyroid hormone 2.ADH 3. Aldosterone 4. Epinephrine 5. Melatonin 6. Estrogen

Parathyroid hormone and calcitonin are synthesized where?

The 16th term of an Arithmetric Progression is four times the 36th term, and exceeds it by 32. Finda the numbers.

Other than a specific confirmatory test, give a simple test that would allow you to distinguish between the following pairs of anions and cations. Tell what you would do and what you should observe for each anions and cations. Anions: a. CO3 2- and NO3 -...

1. What volume will a mixture of 5.00 mol of H2 and 0.500 mol of CO2 occupy at STP?

1. What is the Kelvin temperature of a system in which 4.50 mol of a gas occupy 0.250 L at 4.15 atm? 2. In the lab, students generated and collected hydrogen gas according to the following equations: Zn + H2SO4---> H2 + ZnSO4 a) How many mL of hydrogen ga...

Consider the following equation: 4NH3(g) + 5O2(g)----> 4NO(g)+6H2O(g) a. How many liters of oxygen are required to react with 2.5 L NH3? Both gases are at STP b. How many grams of water vapor can be produced from 25 L NH3 if both gases are at STP? c. How...

balance molecular formula, total ionic formula and net ionic formula of Sr(NO3)2 + Al2(SO4)3. Thank you

1. If 25 grams of Iron (III) hydroxide is dissolved in a 500mL volumetric flask, what is the Molarity of the solution? 2. An unknown metal has a volume of 5.25 mL and a density 2.71 g/mL. What is the weight of the metal in grams? 3. An unknown metal, heat...

An unknown metal has a volume of 5.25 mL and a density 2.71 g/mL. What is the weight of the metal in grams?

An unknown metal, heated to an unknown temperature until a liquid is dropped into a calorimeter that has 250 ml of water. The water heats up from 22 degrees Celcius to 29 degrees Celcius, at which point the temperature of the water and metal are equal. Ho...

Your length measurement was 21.34 cm. The ‘accepted value’ was 21.77 cm. What is the percent error of your measurement?

After subtracting the weight of the container, the Vanadium metal inside is found to weigh 8.34 grams. After reacting with Oxygen the newly formed compound weighs 21.43 grams. What is the empirical formula?

A 19.18 mL of 0.125 M Oxalic Acid (H2C2O42H2O) is titrated with a Ca (OH)2 solution. The initial volume of Ca(OH)2 was 14.38 and the final volume of Ca(OH)2 was 28.29 mL when the solution turned very slightly pink. What is the concentration of Ca (OH)2?

Determine if the reaction produces a precipitate. For a precipitate mark ‘a’ and if there is no precipitate mark ‘b’. 8. KOH(aq) + Fe(NO3)3(aq)  9. MgCl2(aq) + Na(NO3)2(aq)  10. NaBr(aq) + Ag(NO3) (aq)  11. Na3PO4(aq) + Ba(NO3) 2(aq) 

Why was there condensation of the beaker of cold water when a blue flame was passes underneath? This experiment is from the Gas Burner experiment. A) the product of carbon dioxide from combustion (B) the product of hydrogen dioxide from combustion (C) lef...

A 21.18 mL of 0.250 M NaOH is titrated with a H2SO4 solution. The initial volume of H2SO4 was 13.28 and the final volume of H2SO4 was 28.29 mL when the solution turned very slightly pink. What is the concentration of NaOH?

What is the concentration of a HCl solution if 20.0 mL of the solution is neutralized by 15.0 mL of a 0.10 M Ca(OH)2 solution?

What is the concentration of a H2SO4 solution if 10.0 mL of the solution is neutralized by 7.8 mL of a 0.20 M NaOH solution?

What is the molarity of the resulting solution when 300. mL of a 0.400 M solution is diluted to 800. mL?

What mass of silver nitrate is dissolved in 40.0 mL of a 0.400 M solution of silver nitrate?

What is the mole of oxalic acid? Equation:H2C2O4 + 2NaOH---> Na2C2O4 + 2H2O *Moles of oxalic acid dihydrate is 0.032 mole. * Molarity of oxalic acid solution is 0.128 M oxalic acid solution. * Initial volume of Oxalic acid is 19.8 ml and Final volume is 2...

You know the solution forms a precipitate when? (A) when it changes color (B) when you can’t see through it (C) because it bubbles (D) you have stirred it for more than 5 minutes (E) the solution thickens

Which one in this pair has the larger radius? Explain a. Calcium atom or calcium ion b. Aluminum ion or Magnesium ion

A sample of propane gas, C3H8, was collected over water at 25 degree Celsius and 745 torr. The volume of the wet gas is 1.25 L. What will be the volume of the dry propane at standard pressure?

What volumes will each of the following occupy at STP? a. 1.80 x 10^24 molecules of SO3 b. 7.5 mol C2H6 c. 25.2 grams chlorine

how many molecules of CH4 gas are present in a 1.00 L flask of CH4 gas at STP?

A patient’s blood cell count shows 15,000 white blood cells (WBCs) per µL of blood. A normal WBC count is about 9,000 cells/µL (the normal range is actually 4,000 to 11,000 WBCs/µL). What percent of normal is this particular patent’s WBC count?

Obesity is defined medically as 20% above a person’s ideal weight. If a person’s ideal weight is 72 kg, when (above what weight) would that person be considered obese? ________________kg

If a man’s ideal weight is 165 lbs. and he weighs 185 lbs., how many pounds above his ideal weight is he? What percent above his ideal weight is he? ______________lbs. above ideal weight ______________% above ideal weight

Classify each of the eight living things listed below into one of the two groups according to an important physical characteristic. Gorilla,Parrot,Snake, Earthworm,Jellyfish,sponge,fish,fly Group 1- Group 2- what characteristic did you use in you classifi...

For the reaction: C4H10 + O2 ¨ CO2 + H2O ( is this balanced?) , how many moles of CO2 is formed when 5.00 moles C4H10 reacts with O2? A. 5.00 B. 1.25 C. 20.0

Fill in the table with information about the action of pharmaceutical drugs on neurological disorders. Name of drug 1.Valium a.Neurotransmitter affected b.Does the drug enhance or reduce the effect of the neurotransmitter? (indicate which) c.For what type...

Match the poison/drug to the effect. a. curare b. tetanus toxin c. a-bungarotoxin d. strychnine e. botulinum toxin f. neostigmine __________ causes spastic paralysis by specifically blocking glycine receptors __________ causes flaccid paralysis by blockin...

There may be more than one region in which the neurotransmitter is active. Choose one, and make sure your answer in column 4 matches the region identified in column 3. 1.Glutamate a.Is it excitatory or inhibitory (indicate which)? b. Name a specific regio...

Compare and contrast the activity of acetylcholine, dopamine, serotonin, and norepinephrine. If the statement applies to more than one, indicate which ones. ___________________________ curare interferes with the action of this neurotransmitter ___________...

A sample of propane, \rm C_3H_8, contains 12.8 moles of carbon atoms. How many total moles of atoms does the sample contain?

Calculate each of the following quantities in 0.183 mole {\rm (C_3H_5)_2O}: Find the Atoms of H and C

If you placed the stethoscope on the patient's bracial artery, but did not put the BP cuff on the patient, you wouldnt hear blood flow sounds. Explain Why you woundnt hear hear bllod floww sounds if you didn't put the BP cuff in the patient?

If Tums is added to 55.0 {\rm mL} of 0.750 {\rm M}{\rm HCl}, how many grams of {\rm CO}_{2} gas are produced?

How many milliliters of 3.60 {\rm M} {\rm HCl} are required to react with 140 {\rm mL} of 1.60 {\rm M}{\rm Al}({\rm OH})_{3}?

what is the meaning of the numeral represented by X in the general formula for hydrate salt * XH2O

If 39.2 of 0.177 is required to neutralize completely 22.0 solution, what is the molarity of the acid?

Draw the condensed structural formulas of ethyl alcohol

In your own words, explain the second law of thermodynamics and explain why it is not violated by living organisms?

What happened if you put the Elodea leaf cells in a solution of 0.5% NaCl,1.8% NaCl and 0.9%NaCl?

Calculate the wavelength of light that must be absorbed by hydrogen atom in its ground state to reach the excited ste of E=+2.914*10^(-18)

HOw much energy is required to ionize a mole of Hydrogen atoms?

what are the formulas of the salts that may precipitate when the reaction mxture is cooled?

Why does the alkyl halide layer switch from the top layer to the bottom layer at the point where water is used to extract the organic layer?

An ether and an alkene are formed as by-products in this reaction. Draw the structure of these by-products and give mechanism for their formation.

Why must the alkyl halide product be dried carefully with anhydrous calcium chloride before the distillation?

A parking lot is 60 meters wide and 80 meters long. At $ 15 per square meter, how much will it cost to pave the parking lot?

A swimming pool is 16 meters wide and 25 meters long. At $50 per square meter. how much will a child-proof covering for the pool cost?

Why is it important to understand the relationship between nerves and muscles?

if antiseptic hydrogen peroxide is 3% H2O2 by mass, approximately how many moles of H2O2 are present in each gram of antiseptic solution? you can assume the solution has the same density as water. show your calculations.

Rick rides 11 1/8 miles in an hour with his bike in second gear going uphill. If Rick rides downhill in fourth gear he goes 2 1/2 faster. How many miles will Rick go in an hour downhill in fourth gear?

What is the source of the magma that fuels the island arc complex?

Calculate the pH of .100 of a buffer solution that is .25 M in HF and .50 M in NaF. What is the change in pH on addition of the following? A. .002 mol of HNO3 B. >004 mol of KOH I calculated the correct pH of the solution but am having trouble calculating...

Eric is planning a 7-day resort vacation. He will play golf on four mornings. He also wants to play tennis but can only play tennis on days he does not play croquet. He will play croquet on any day immediately following a day that he plays golf. What is t...

A ship sails north, then turns 45° in a clockwise direction. After another hour, it turns clockwise 90°. In which direction is the ship now sailing? 90 + 45 = 135° west?

Write a proportion using an unknown value x and the ratio 5:6 then solve it. In an orchestra, the ratio of trombones to violas is 1 to 3. There are 9 violas, Write a proportion that gives the number t of trombones in the orchestra. How many trombones are...

1. Write a proportion using an unknown value x and the ratio 5:6 then solve it. 5/6 = x/12 6 * 2 = 12 5 * 2 = 10 x = 10 2. In an orchestra, the ratio of trombones to violas is 1 to 3. There are 9 violas, Write a proportion that gives the number t of tromb...

You train for A race by running at a speed of 6 mph. A) At this speed, how many minutes does it take for you to run 3.2 miles? B) on race day, you run 3.2 miles in 30 minutes. What is your speed in miles per hour?

I need help! We have to create a business and i have no clue what a 'mission statement' is or anything so please help me! (^~*)

When Cheryl goes mountain climbing, she rests every 15 minutes that she climbs if Cheryl’s combined time is 2 hours, how many minutes does she rest? Need the answer due tomorrow!!

What is half of the answer in the sequence:1,1,2,8,3,27,4

Using the graph on world trade and production, which describes the impact increased production in 1932 had on world trade? While production increased steadily after 1932, world trade would not be significantly affected until 1935. Increased production in...

A sales lady earns 12% Commission on goods sold above sh 200,000.Calculate the value of goods sold if she earned sh 14400 as commission??

Facts and details that the author writes clearly in the text are called what? explicit information obscure information educated guesses exciting information PLEASE HELP ME! I really need help on this!

you ran out of money while shopping at the mall, but your friend still have plenty of money. One of them even has her dad's credit card. When it was time to pay for the identical jeans each of you decided to buy, you took the credit card from your friends...

the Minnesota area was acquired through the Louisiana Purchase. This agreement was between the united states and which of the following countries a. Great Britain, b. Spain, c. Spain, d. Mexico Please help!

how did the clearing of forests by the settlers impact native Americans?

What evidence supports the concept of plate tectonics and explains the movement of the continents?

X is partly constant and partly varies as Y when y=2, x=30, and when y=6, x=50

Using a lever, a person applies 60 N of force and moves the lever 1 m. This moves a 200 N rock at the other end by 0.2 m. What is the efficiency of the lever?

How to contruct the mediator of a line

Determine if 7xv2+y=5 is a linear or nonlinear function.

A pan with four eggs weighs 18 ounces. A pan with eight eggs weighs 24 ounces. What is the weight of the pan?

What role did the Church play in feudal society?

What early kingdoms formed in Europe from the 400s to the 700s?

Answers

The following answers were posted by visitors named Ivy.

Here's my work please tell me if its right DrBob222; P=760 torr or 1 atm V=? T= 273 K n= 5.00 + 0.500= 5.5 mole V= nRT/P = (5.5 mol)(0.0821 L x atm/mol*K)(273 K) divided by 1 atm = 123.27 L

Why is it H2Ox instead of H2C2O4?

I don't understand what you just wrote

Yes 1s2 2s2 2p1,I am right?

so is it when you can't see through it or when the solution thickens?

1s2 2p1 is that right? Thank you so much!

I know that 1s2 2s2 2p1 is the excited state of 1s2 2s2 but then 1s2 2p1 its orbital are filled out of turn. So I am kinda confused about it because you said that if its excited state then that means its not ground state and if the orbitals are filled out...

I know that 1s2 2s2 2p1 is the excited state of 1s2 2s2 but then 1s2 2p1 its orbital are filled out of turn. So I am kinda confused about it because you said that if its excited state then that means its not ground state and if the orbitals are filled out...

is this right for a. 1.80 x 10^24 molecules of SO3(1 mol SO3/6.022E23)(22.4L/1 mol)? but then the book said the answer is 67.0 L SO3

where would i get N?

Onomatopoeia is imitation of sounds of nature. I don't see the onomatopoeia in this lines.

The pelican was going 7.6 m/s

The correct Answers is B.

The answer is D. :)

ΔG = -RTlnK = [-8.314 x (273+37)] x ln (.50/1.7) 3154.08 J/mol 3.154 kj/mol

1. 5/6 = x/12 6 * 2 = 12 5 * 2 = 10 x = 10 does that work? 2. 1/3 = t/9 3 * 3 = 9 1 * 3 = 3 t = 3 so yeah i think we're right 3. i don't quite understand, if you can write it out like how i write out the above answers that'd be great.

Thank you so much!

Having trouble, is this sentence transitive or intransitive? "Many musicians put their hearts into their music"

h = 1/2 (-9.81) (3^2) h = -44.14 meters

Use the pythagorean theorem. x*x+12*12=13*13 x*x+144=169 x*x=25 x=5 5 is the side length of the remaining side. to find the area of a right triangle you do base*height divided by two. 12*5=60 60/2=30 area=30

300/ 31 2/7= 300/ 219/7= 300*7/219= 9 43/73 minutes

Solid figure of shoe box

How do I write rewrites starting with corner

BOB IS RIGHT! THANKS A BUNDLE!

They are correct but I put in C not D haha

1.C 2.A 3.B 4.C 5.C

A. C B. D C. A You're welcome, ya'll.

f (1, -2) is equidistant with (4, 4) and (x, 4), find x. I need a complete solution for this equation.

14 pages = 20 minutes. + 5minutes 5 = half of 10 (7 pages in 10 minutes) half of seven is 3.5 (3 and 1 half) add 14+3.5= 17.5 and there is ur answer :)

You can use a calculator and I seem to be a year late, but here's the answer: 3 * 343 = 1029 1029 is the answer. You're welcome.

Thank you for your kindness.

Gracias, Mami-san! Thanx for your help. Mi maestro will by happy. Adios! ~Ivy Heart age 12.

1. the earth would become too hot. 2. it is converted to light. 3. the light yellow block absorbs heat than the dark blue box. 4. the planet warms up.

I do not trust you UwU, 2020! You should right down the question, then put the answer! It would be help if you could! ~You totally lost my trust, Ivy

Thank you, ELM everyone lives matter! I got 100% ! If you go to Conexus, then listen to ELM everyone lives matter! TRUST ME!

PLEASE HELP A.S.A.P.

1. A 2. B 3. A 4. B 5. D 6. B Just Did the test an got an 100%

Thanx Anonymous! 😊😍👌

I got 100%! If you go to Conexus then trust Anonymous! Anonymous has them in order! TRUST Anonymous IF YOU GO TO CONEXUS! 👌😊😍😁👍😎😉👏😃😄

It is 5/15! The answer is D. 5/15

I think it is A. or B.

Please help! And quick!

Here are the answers to the whole Number Theory and Fractions Unit Test: 1. b 2.a 3 c 4. b 5. c 6. c 7.c 8.d 9.c 10.b 11.a 12.d 13. b 14. b 15.d 16.b 17.b 18.a 19.d 20.c 21. 46145*3=138435, 138435 divided by (/) 3= 46145 22. No because 8 is not a prime nu...

I think a fight began. Here are the options: Intense fighting began Rapid decline in the dear and beaver Native Americans became skilled in forestry There was no impact on Native Americans

c. and d. make no since.

I'm stuck in between a and b

Please Help! Fast!!!!! I need the answer quick!

a b c c c d a b b c a

Trust UwU Lover. I got 100% and i went to see if anyone needed help and UwU's answers are the same as mine! Trust me you will get 100% with these answers: 1:Trustworthy 2:Wikis 3:Acedemic websites 4: spelling errors, emotional language ~Ivy

These Answers Will Get You 100%! 1. The bread was so burned, it looked exactly like a hockey puck," Karen said. "When I was your age," Grandpa said, "books were our Internet." 2.direct quote, paraphrase 3. quotation marks/plagiarism 4. a shorter sentence...

The answers are: 1. Parenthetical. 2. No, because information on wikis can be edited by anyone. 3. Even though he is surprised to be both a dentist and a lawyer, he is happy he is both (Evergreen). 4. A radio program 5. No, because the source describes a...

The correct answer is A, hospitality. :)

Please can someone post all the answers to the quick check PLEASE

I came to check my answers and I only had 2 wrong thank u

Equation of the circle in standard form

1.00kg 3.80×10^3 m^3

I just want people on this website to know that if you copy and paste not only will your teacher know that you're "cheating" or whatever you want to call it they will know EXACTLY where you got it from, they get a link that tells them where you went to ge...

Ishtar feels contempt for people.

Why did Christianity spread through Europe in the 700s and 800s?

I meant about how the gods created humans and such, acorrding to Maori myths