Hiv/aids vs Dogs question under main group

Can dogs get Hiv

May 1 2017, 3:56 am

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General question question under Physics

What causes an object to float in water besides weight effect

April 27 2017, 8:03 am

Video's question under Physics

Sorri but none of the video's is playing...does anyone else have a problem with this or is it just me

April 19 2017, 4:41 pm

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Videos question under Physics

I tried to watch videos and they responde by " This is private video" help plz

March 9 2016, 3:07 pm

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about grade 11 question under main group

can you also discuss about grade 11 stuff's

October 2 2015, 5:36 pm

Circular motion question under Physics

The circular motion of a particle in the x-y is given by the equations:

r(t)= 7.23m

Theta(t)= (6.33rad/s)t

Where r is the distance from the origin and Theta is the polar angle measure counterclockwise from the positive x-axis. Calculate the x-coordinate of the particle at time t=2.50s

April 15 2015, 9:03 am

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Checking question under main group

Did my question post?

April 15 2015, 8:51 am

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Tutorial workshops question under Physics

Are you guys going to organize tutorial workshops for Physics as well? They are extremely helpful for Maths.

April 15 2015, 8:41 am

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General question question under Physics

an athlete runs 100m in 10.0 seconds. assume that he accelerates uniformly from rest for the 20m and then he runs at constant velocity for the remainder of the race. find the final velocity and the time taken accelerating

March 14 2013, 9:00 pm

General question question under main group

When a 0.998g sample of CuSO4.xH20 was heated strongly,so that the waters of hydration were given off,the mass of the anhydrous salt remaining was found to be 0.638 g.What is the experimental value of the percent water of hydration?

April 21 2013, 10:15 pm

General question question under main group

Subject: Heat of mixingnnnHi Therenn[Sigurd Skogestad, page 113, question 4.7b].I ve tried this question at it is on the textbook,but i get a different answer,where am I going wrong? nn For the following assume the same initial temperatures before mixing.(20Â°C) a. Calculate the adiabatic temperature rise when we mix 0.5kg sulphuric acid with 1kg water. nYou are given the following information: nHeat of mixing = -96kJ/mol H2SO4nMolecular weight for the acid = 98.1g/mol Specific heat capacity of water= 4.18 kJ/kg K nnnnn Solutionsna. 500g =500/98.1 = 5.09 mol H2SO4 nn1kg = 1000/18 = 55.5 mol H2OnEnthalpy mix = -96*5.09 = -489.3 kJ/kg solution (used -96kJ/mol because mol of water >10) Temperature change = -489.3/4.18=117 K.nnTextbook answer is 72 K

April 21 2013, 9:55 am

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Previous questions

I tried to watch videos and they responde by " This is private video" help plz...

Are you guys going to organize tutorial workshops for Physics as well? They are extremely helpful for Maths....

When a 0.998g sample of CuSO4.xH20 was heated strongly,so that the waters of hydration were given off,the mass of the anhydrous salt remaining was found to be 0.638 g.What is the experimental value of...

Sorri but none of the video's is playing...does anyone else have a problem with this or is it just me...

The circular motion of a particle in the x-y is given by the equations: r(t)= 7.23m Theta(t)= (6.33rad/s)t Where r is the distance from the origin and Theta is the polar angle measure counterclockw...

an athlete runs 100m in 10.0 seconds. assume that he accelerates uniformly from rest for the 20m and then he runs at constant velocity for the remainder of the race. find the final velocity and the ti...

Did my question post?...

What causes an object to float in water besides weight effect...

Can dogs get Hiv...

can you also discuss about grade 11 stuff's...

Subject: Heat of mixingnnnHi Therenn[Sigurd Skogestad, page 113, question 4.7b].I ve tried this question at it is on the textbook,but i get a different answer,where am I going wrong? nn For the follow...

I tried to watch videos and they responde by " This is private video" help plz...

Are you guys going to organize tutorial workshops for Physics as well? They are extremely helpful for Maths....

When a 0.998g sample of CuSO4.xH20 was heated strongly,so that the waters of hydration were given off,the mass of the anhydrous salt remaining was found to be 0.638 g.What is the experimental value of...

Sorri but none of the video's is playing...does anyone else have a problem with this or is it just me...

The circular motion of a particle in the x-y is given by the equations: r(t)= 7.23m Theta(t)= (6.33rad/s)t Where r is the distance from the origin and Theta is the polar angle measure counterclockw...

an athlete runs 100m in 10.0 seconds. assume that he accelerates uniformly from rest for the 20m and then he runs at constant velocity for the remainder of the race. find the final velocity and the ti...

Did my question post?...

What causes an object to float in water besides weight effect...

Can dogs get Hiv...

can you also discuss about grade 11 stuff's...

Subject: Heat of mixingnnnHi Therenn[Sigurd Skogestad, page 113, question 4.7b].I ve tried this question at it is on the textbook,but i get a different answer,where am I going wrong? nn For the follow...

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