Neha

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

Questions

The following questions were asked by visitors named Neha.

i need a written example of an article.

1. I got a list of solutions. We did a test in the lab to figure out what was there pH. How do you figure out which one is the most acidic and the most basic? 2.When might you need to know whether a solution is acidic or basic? 3. Dishwasher detergent, ov...

2NaF + CaCl2 ¨ CaF2 + 2NaCl An excess of 0.20 M NaF is used to precipitate the calcium ions from a 50.0 mL sample of a calcium chloride solution. What is the concentration of the original calcium chloride solution?

You want to determine the molar heat of solution of sodium chloride using a 10.0 g sample of NaCl(aq) and 50.0 mL of water in a coffee cup calorimeter. Which of the following equations would you use? Assume the specific heat of the solution is the same as...

What type of isomers are [Pt(NH3)2Br2]Cl2 and [Pt(NH3)2BrCl]BrCl? A. Structural B. Geometric C. Linkage D. Coordination E. Optical

92.01 grams of N2O4 (g) is placed in a container and allowed to dissociate. N2O4 (g) --> 2NO2 (g) The mixture of N2O4 and NO2 resulting from the reaction occupies 36.0 liters at a total pressure of 773 mmHg and 45 °C. A. Let x equal the moles of N2O4 that...

Nitrogen and hydrogen, with volumes of 12.0 L each, are injected into a sealed rigid reaction chamber containing a catalyst. The pressure of the chamber is 8.00 atmospheres and at a known temperature. The reaction is allowed to proceed to completion while...

Which of the following substances exist(s) as a resonance hybrid? CO2 (g) SO3 (g) HCO2- (aq) A. I only B. II only C. III only D. I and II only E. II and III only Ans w/i 12 hrs please!!

1. Question: Consider two planets with uniform mass distributions. The mass density and the radius of planet 1 are p1 and R1, respectively, and those of planet 2 are p2 and R2. What is the ratio of their masses? Ans: M1/M2 = (p1/p2)(R1/R2)^3...I got this...

A box of books weighing 303 N moves with a constant velocity across the floor when it is pushed with a force of 400 N exerted down-ward at an angle of 38.6 degrees below the horizontal. Find ìk between the box and the floor. Well I know that I have to use...

Rank the following solutions in order of increasing acidity. 1 M phenol 1 M boric acid 1 M cyanic acid 1 M formic acid 1 M hydrochloric acid 2. Rank the following solutions in order of increasing basicity. 1 M C3H5O3Na 1 M KF 1 M KOCN 1 M KOCl All I know...

You are riding on a flatbed truck moving at 50 kilometers per hour. You have two identical guns, one aimed forward and one aimed backward, and you fire them at the same time. According to an observer in the ground, 1. the backward bullet appears to move f...

What is the largest amount of H2O in grams that can be formed when 5.70 g of H2 reacts with 5.70 g of O2, based on the balanced reaction below. 2 H2 + O2 2 H2O

Determine the mass of CuSO4.5H20 needed to make 100.00mL of a .100M CuSO4.5H20 aqueous solution..

What you can predict about a reaction whose activation energy is zero?

determine the value of k for which the fuction f(x)=4x^2-3x+2kx+1 has 2 zeros.

can someone read my english essay and correct it for me?

An airplane has an airspeed of 770 kilometers per hour at a bearing of N 48 degrees E. If the wind velocity is 28 kilometers per hour from the west, find the angle representing the bearing for the ground speed? I found Rx and Ry which are 543.23 and 572.2...

If 23% of the cars that pass by your house each day are red, 12% green, 4% yellow, and 31% black; what is the probability the next car to pass your house will be red or yellow? (Assume every car is only a single color). I have to pick which formula to use...

A park is in the form of a rectangle 100 m×80 mat. At the centre of the park there is a circular lawn. The area of the park excluding the lawn is 4150 m^2 find the radius of the circular lawn

Closure of the set of irrational number is phi

Arbitrary union of closed set is closed Prove or disprove

The mass of sodium carbonate required to prepare 250ml of 0.4N solution is

A cyclist move 4km in the east diraction then he turn to north and move 3km . Find displacement.

The capacity of a rectangular tank is 5.2cubic metre and area of its base is 2.6Ã—1000 square centimetres.find its height

A man travels 12km towards west then 3 km towards south and then 8 km towards east. How far is he from the Start?

the cost price of16 books is equal to the selling price of 30 books.Find the gain%?

Can anyone, a experienced person tell whether breaking of an egg is chemical or a physical change.. Coz no one has given a expected answer... Plz do it with interest coz if you don't know it don't reply... Someone has put tested, someone has put cooking.....

Calculate the sum possible two-digit number using the digits 3 and 4

10g of h2so4 is added into 20g of water. Calculate the mole fraction of h2so4

Planck's constant is 6.63 * 10^-34 Js and the mass of the electron is 9.11*10^-31 kg. Calculate the uncertainty in the position of the electron in meters.

Please Help! What is the direction of the vector r of t equals the vector with components square root of 3, 1? (10 points) A) pi over 6 B) 1 C) the square root of 2 D) pi over 3

A scientist is monitoring the temperature of a holding tank containing fish to be released into a river. In one 12-h period, the average temperature was 9°C plus or minus 1.4°C. What absolute value equation can be used to represent this situation?

Answers

The following answers were posted by visitors named Neha.

SORRY # 3 DOESN'T COUNT!!!

The right answer is b. OH- and SO32-

8.75/34.02 (molar mass of H2O2) = .257 mol H2O2 Since the mol ratio b/t H2O2 and O2 is 1:1, there is also .257 mol O2 .257 mol * 6.02 * 10^23 = 1.55 * 10^24 molecules so the 3rd option.

In regards to DrBob222, there were 3 parts to this question; the first part said there were .1952 g and the mols were 2.504 * 10^-3 mol. But I don't know if this part refers to the first part because it doesn't sound like it does.

But one of these has to be the answer.

Ok. Thanks once again!

Thanks for question 1. So what would the partial pressure be for the gases?

Sorry. Well, I know that CO2 has resonance forms, but SO3 and HCO2 have resonance forms too. So that's why I don't get which one is the answer because all of them have resonance forms. I guess I just don't understand the "hybrid" part of the question, whi...

I got 2.67 and 5.33 (b/c I did 3x = 8 atm (2x for NH3 and x for N2). Is that on the right track?

But I thought that CO2 could be like O=C=O, O-C=-O, and O=-C-O. Thank you though, for your input. :) I'm sorry about just posting the questions again.

Sorry where it says ik it should be the microsign and then k

oh wait nvm it can be N b/c force of gravity = weight

i got 26.95...seems high

I know that coefficients generally don't exceed 1, so I have no idea what to do

i redid it and got 1.205 which is wrong. can someone please help me?

that's what i did before, and it's still wrong

so Fg = 75*9.81 = 735.75 N Fnet = ma Fair - Fg = ma 96 - 735.75 = 75 * a a = -8.53 m/s2 Vf2 = Vo2 +2ax Vf2 = 0 + 2(-8.53)(-30) Vf2 = 511.8 Vf = -22.63 m/s //neg b/c downward direction

I saw a video in class that only had the backwards ball involved, and the backwards ball didn't move at all. So I'm wondering what the effect of the forward ball does to the problem.

There is no underlined digit

22<40-18t<31 subtract 40 from all sides and then divide by -18. Flip the signs afterwards.

full solution od this question

how the N becomes 85 in first ?

I love the way they are solving

Can anyone, a experienced person tell whether breaking of an egg is chemical or a physical change.. Coz no one has given a expected answer... Plz do it with interest coz if you don't know it don't reply... Someone has put tested, someone has put cooking.....

Rupashi, the formula is PxRxT/100.....so why have you put 1000 insted of 100????

In a mess of a MBA college having 320 students has a stock of food for 80 days .If 20 students left the college after 20 days,for how many more days will the food last ?

I am olevels student.. this help me alot....bundle of thanks

Yes! I did, but I didn't know how to go on from there

Give mr solution

Plzz give trade necessary examples also