lili

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

Questions

The following questions were asked by visitors named lili.

week 11 and 12 its hard

the surface area of a sphere if the radius, r, is 6 meters.

come cambiare la scuola

when was willian (Bill) H. Gates born?

What would be the effect of raising the temperature and increasing the carrier gas flow rate on the ability to resolve two closely spaced peaks?

Can you suggest some possible reasons for using a mixture of water and ethanol (1:1 mixture H2O/EtOH) as crystallizing solvent rather than using either pure ethanol or pure water?

given: angle 1 is congruent to angle 2, angle measure 1=120 prove: angle measure 3=120

express the given repeating decimal 0.159159159 as a fraction

a girl delivering newspaper travels 3 blocks west, four blocks north, then 6 blocks east. What is the total distance she travel

The reaction of MnO4- with oxalic acid (H2C2O4) in aciic solutiob, yielding Mn2+ and CO2 gas, is widely used to determine the concentration of permanganate solutions. (a) write a balanced equation for the reaction would it be MnO4- + H2C2O4 --> Mn2C2O4 +...

Balance the following redox equation occurring in a basic solution: AG + CN{-} + O2 = AG(CN)2{-} I tried...but this is wrong...2H2O+ AG + CN{-} + O2 = AG(CN)2{-}+4OH{-}... I am supposed to do half reactions...how do I spit the product AG(CN)2{-}?????

(AAAAA)The standard reduction potentials of lithium metal and chlorine gas are as follows: (for Li, reduction potential is -3.04, for Cl it is 1.36) In a galvanic cell, the two half-reactions combine to 2Li{+](s) + Cl{-}2(g) --> 2Li{+}Cl{-}(aq) Calculate...

Find the theoretical yield when 100 mL of 0.1 M NaI is reacted with 0.50 mL of Br2 (density: 3.10 g/mL) to produce NaBr and I2. What is the actual yield if the percent yield is 81%? (Atomic masses (g/mol): Na, 22.99; I, 126.9; Br, 79.90)

I am a 3 digit odd umber. my tens digit is one less than my hundreds digit but two more than my ones digit. The sum of my digits is 20. who am I?

A metallic surface emits photo electrons when green light falls on it. But the metal does not emit when yellow light falls on it. Which of the following is correct when red light falls on the metallic surface?

nearest tenth of a percent of 1/260

when 2 propanol was used as the developing solvent, two substances moved with the solvent front (Rf=1) during TLC analysis on a silica gel plate. can you conclude that they are identical? if not what additional experiments would you perform?

An astronaut throws a wrench in interstellar space. How much force is required to keep the wrench moving continuously with constant velocity? Select one of the options below as your answer: A. a force equal to its weight on Earth B. a force equal to zero...

find all real zeros of the function y=-7x+4. a.-4/7 b.-7,4 c. -7 d.4/7 how do you find it?

find an equation in slope-intercept form of the line that has slope 2 and passes through point A(-8,7)

A SUPPOSED TREASURE OF OLD SILVER JEWELRY IS UNCONVERED. a.02M^3 BOX OF THE "OLD JEWELRY" HAS A MASS OF 177KG.IS IT R EALLY OLD SILVER? IF NOT WHAT IS IT?

1) A billboard on level ground is supported by a brace, as shown in the accompanying diagram. The measure of angle A is 15 degrees is greater than twice the measure of Angle B. Determine the measure of Angle A and the measure of angle B.

the brakes of a car provide an acceleration of -5.0 m/s^2 . how long will it take for a car traveling at 20.0 m/s to stop ?

How has Britain’s political system impacted Canada’s political system

one half of what john's age was 4 years ago is equal to on of thrid of what it will be in 5 years time.How old is john now

A horizontal force of 160 N is used to push a 49.0 kg packing crate a distance of 7.00 m on a rough horizontal surface. The acceleration of gravity is 9.81 m/s If the crate moves with constant velocity, calculate the coefficient of kinetic friction.

covert 1/3,3/10,0.03,0.33 in order from least to greatest

James uses 1/3 of his land for growing durians, 1/4 for guavas, 3/8 for bananas and 9 hectares for mangoes. what is the total area?

a bank is owed $123 in interest on each of 24 customers loans. would this be best represented as a possible or negative value for the bank? how much are they owed in total.

The balance is a checking account is $82.18 the owner of the account withdraws $100 the bank allows withdrawing more than the balance but charges a $33 fee. What is the new balance in the account?

after a birthday party that began with 3 pizzas, there was 1/8 of one of them left, 3/4 of another and 3/8 of the last one. How much pizza was eaten?

you have 3/4 gallons of paint. Each piece of wood you want to paint requires 2/11 gallon of paint. How many pieces of wood can you paint completely?

two thirds of the students at school prefer beats headphones to all others.3/4 of those students prefer the wireless ones. 1/5 of those students prefer the pink ones. what proportion of students prefer the pink, wireless beats headphones?

a concert hall has 4000 seats. these seats are divided into section A and B. the cost of a ticket in section A Is $50 and that of section B is $40. assuming that all the seats are occupied determine the number of seats to be allocated to each section so a...

Helppppppppp Ms. Goynes, Mrs. Weatherly, and Ms. Washington had $400 to purchase raffle prizes for their classes. They bought 23 wireless mice and 23 headphones. Each wireless mouse cost $3.49, and each headphone cost $9.99. How much money did they have l...

I need help, The 17 students on the basketball team want to raise $263.84 to buy basketballs. They have already raised $45.56. If each student raised the same amount, how much more money must each student raise?

A kicker punts a football from the very center of the field to the sideline 39 yd downfield. What is the magnitude of the net displacement of the ball? (A football field is 55 yd wide.) What is the angle of the net displacement of the ball from a line dow...

A child and sled with a combined mass of 50.0 kg slide down a frictionless hill that is 7.34 m high. If the sled starts from rest, what is the mechanical energy of the system, and what is the sled’s speed at the bottom of the hill?

Calvin is using the formula A=3r^2 to estimate the area of a circle. Solve for r Use your equation to estimate the radius of a circle with an approximate area of 300 cm^2

How many grams of HCl (FW = 36.5g/mol) will be required to completely neutralize 4.0 grams of NaOH (FW = 40g/mol)?

Which integer is the farthest from 0 and therefore has the greatest absolute value?

Answers

The following answers were posted by visitors named lili.

the surface area of a sphere if the radius, r, is 6 meters.

what's the answer

what 1min 38.29

can you teach me how to do math? please

For constructive interference d sinQ=ml=2x460nm=920nm For destructive interference of the other light, we have d sinQ=(m’+1/2)l When the two angle are equal, then 920nm=(m’+1/2)l l=1.84x103 nm for m’=0 l=613 nm for m’=1 l=368 nm for m’=2 The only waveleng...

sol. ass 5% + ? apa distilata = sol. hipochloride 4%

mol HA + NaOH --> NaA + H2O i x 0.030 f x-0.030 0 0.030 pH = pKa + log(0.030/x-0.030) x = 0.042 mol PM=5.5g/0.042mol = 129.1 g/mol

oh never mind--I got it!!! (I did half reactions...)

I think I understand...but how do I do CN- reactant? do I do a half reaction too?-->with a product of CN2???

the answer is 4AG + 8CN{-} + O2 + 2H2O=> 4AG(CN)2{-} + 4OH{-} I do not understand the plugging in of CN. COuld You please explain?

Great! The CN was the spectator that did "nothing." thank you very much.

6(5)-3(5)^2+3^3=-18

i have first part. If u have a second, wy can exchange.

why is the heat lost by the metal sample (Ql)equal to he heat gained by the water in the calorimeter (QG)?

I did but can't find anything related

Ans 1) third option which is the study of interactions among organisms and their environment.

negative 120.82

yes that's what I mean

a bank is owed $123 in interest on each of 24 customers loans. would this be best represented as a positive value or negative value for the bank? how much are they owed in total.

nevermain is it 7/4

you can paint 4 pieces of wood

the whole pizza

someone tell me pls idk

why were the colonist upset about the proclamation line

I'm also new here but I need an answer asap

I was able to figure out "What is the magnitude of the net displacement of the ball? " It is 48 yd I only need help with "What is the angle of the net displacement of the ball from a line down the center of the field?" thanks

Calvin is using the formula A=3r^2 to estimate the area of a circle. Solve for r Use your equation to estimate the radius of a circle with an approximate area of 300 cm^2

Commutative property of addition