Wednesday

January 28, 2015

January 28, 2015

Total # Posts: 37

**Chemistry grade 11**

sorry, i made a typo, the question says that the compound has a molar mass of 146 g/mol
*January 10, 2015*

**Chemistry grade 11**

I got C10 H20 O but that makes the molar mass 156, not 146 :( am i doing something wrong?
*January 10, 2015*

**Chemistry grade 11**

An organic compound is composed of C, H and O. A 0.1005 g sample of this is combusted, producing 0.2829 g CO2 and 0.1159 g of H2O. What is the empirical formula of this compound? If the compound has a molar mass of 14 g/mol. What is the molecular formula?
*January 10, 2015*

**General Chemistry**

If the pressure is 748 mmHg, and if h= 35mm, what is the pressure of the gas, expressed in atm, If the substance in the tube is oil having a density of 0.788 g/mL? The density of mercury is 13.6 g/mL.
*October 26, 2014*

**physics**

Given. a = 25.1 cm and b = 51.2 cm and the forces are F1 = 10.3 N, F2 = 10.6 N and F3 = 14.7 N. The angle between F2 and the horizontal is θ = 27.9 °. Find the magnitude of the net torque on the wheel about the axle through O. Answer in units of N m.
*October 19, 2014*

**English (hamlet)**

King Hamlets supposed death was from who?
*May 15, 2014*

**english (hamlet)**

Thanks :)
*May 15, 2014*

**english (hamlet)**

Hamlet awaits the appearance of the ghost on a. The moor near the battles ground b. The birnam woods c. The ramparts of elsinor castle d. The cellar of the castle
*May 15, 2014*

**Math (check)**

Thank you Ms.Sue :) can you help me with B?
*April 30, 2014*

**Math (check)**

Whoops made a mistake i subtracted 536.25 by 455.8125 and got 80.4372
*April 30, 2014*

**Math (check)**

Masaru works as a salesperson and earns an hourly wage plus commission.He works 35 hours per week, at a rate of $11.75 per hour. His commission is about $125.00 per week. his expenses account for about 85% of his income. A. How much money does he put into savings in one year? ...
*April 30, 2014*

**math**

Oh. Can you try answering my other question than?
*April 22, 2014*

**math**

A.) start by calculating how long it will take you to save enough money and pay cash with your potential $300.00/month savings, taking into account the $1000.00 you have already saved. B.)Now imagine you have invested your original $1000.00 savings. I.) calculate how much the ...
*April 22, 2014*

**math please help**

Car***
*April 22, 2014*

**math please help**

Your parents have just brought you a care and now you have an opportunity to "deck it out." how would you change/ enhance your vehicle to make it your dream car? What features/parts would you add, including taxes. Imagine you have a job, $1000.00 in savings account ...
*April 22, 2014*

**Socials 9**

Propose some reasons why woman were unable to keep leadership positions during the reign of terror and it's aftermath
*February 10, 2014*

**finite math**

a cellular phone manufacturer randomly selects 5 phones from every batch of 50 produced. if at least one of the phones is found to be defective, then each phone in the batch is tested individually. find the probability that the entire batch will need testing if the batch ...
*November 24, 2013*

**chemistry**

a 5 g mixture of natural gas containing ch4 and c2h4 was burnt in excess of oxygen yielding 14.5 g of co2 and h2o.What is the weight of ch4 and co2 in the mixture
*July 25, 2013*

**chemistry**

a 5 g mixture of natural gas containing ch4 and c2h4 was burnt in excess of oxygen yielding 14.5 g of co2 and h2o.What is the weight of ch4 and co2 in the mixture.
*February 17, 2013*

**physics 11**

By how much would 1200 W kettle, which is 72% efficient raise the temperature of 0.60 kg of water in 3.0 min?
*December 20, 2012*

**Mathematics**

The expression 1/3 log (a)-3 log(b) is equivalent to_________, i know the answer but i dont know how to get it.
*December 16, 2012*

**computer science**

Write a method main that demonstrates class Employee's capabilities by creating two Employee objects. Initialize one of the objects (give values to the instance variables) using the constructor and display its instance variable values through the display method. Using the ...
*October 27, 2012*

**maths**

r-s-3t-u=1 2r+4s-2u=2 3r+4s-2t=0 r+2t-3u=3 find the solution
*October 25, 2012*

**Math**

Mathew has received $1 the first week, $3 the 2nd week, $5 the 3rd week and so on until he has received a total of $1 000 000. What amount did he receive the last week?
*March 22, 2012*

**math**

maybe it's (6,9) or (6,12) either one
*January 5, 2012*

**physics**

how do we calculate the height of a falling ball with a mass of 0.5kg and a velocity of 10m/s.
*December 9, 2011*

**physics**

WHAT does "a" stand for?
*December 9, 2011*

**physics**

a ball has a mass of 0.5kg dropped from a cliff top, the ball srtikes the sea below at a velocity of 10m/s. (a)what is the kinetic energy of the ball as it strikes the sea? (b) what was its potential energy before it was dropped? (c)from what height was it dropped?
*December 9, 2011*

**physics**

A motor cyclist travelling at 12m/s decelerates at 3m/s^2. (a)How long does he take to come to rest? (b)How far does he travel in coming to rest?
*December 9, 2011*

**math**

thanx reiny i realyy appreciate t ill try and answer ur question
*December 5, 2011*

**math**

ms.sue plz help me
*December 5, 2011*

**math**

problem # 1 No Zeroes two numbers multiply to give 100 000. Neither of them contain a zero. What are the numbers? problem # 2 Junk Food a burger and a cola togerther cost $3.25. If the burger costs $1.75 more than the cola, how much does the cola cost? PLZ HELP FAST...
*December 5, 2011*

**Economics**

Using the Mundell-Fleming model, compare and contrast the impact of monetary expansion with low capital mobility under fixed and flexible exchange rates.
*September 14, 2011*

**chemistry**

Well Dr Bob can you explain the rule for where you take from or add in transition metal ions?
*August 30, 2011*

**chemistry**

the answer is B, but can you explain the process to answering it?
*August 30, 2011*

**chemistry**

26. The first five successive ionisation energies of an element are 0.807, 2.433, 3.666, 25.033, 32.834 MJ mol–1 . Which one element from those listed below could this element be? •(A) B (B) C (C) N (D) O (E) F
*August 30, 2011*

**6th grade**

If a ladder is on a house and the top is touching the house 8 feet above the ground, the bottom is touching the ground 6 feet away from the house, if you move the ladder in 1 foot how high will the ladder be touching the house.
*April 5, 2010*

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