Questions asked by Izzy H.
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Ethene undergoes incomplete combustion to form carbon dioxide, carbon monoxide and water vapour. If the ratio of carbon dioxide to carbon monoxide formed is 9:1 when x cm^3 of ethene is burnt, what is the volume of oxygen gas consumed in the reaction?

Is the polar function #54 sin theta# symmetric with respect to the y axis?

Why is #r=3cos2theta# not symmetric over #theta=pi/2#?

Is this correct?

How does #(costheta_1costheta_2sintheta_1sintheta_2)+i(costheta_1sintheta_2+sintheta_1costheta_2)# become:
#[cos(theta_1+theta_2)+isin(theta_1+theta_2)]#?

How do I represent #z=3+3sqrt3 i# in polar form?

How to fi the final form of the augmented matrix when solving for the inverse of this system of equations?
#2x+3y=4#nd
#4x+5y=5#

How to find the final form of augmented matrix when solving for the inverse of this system of equations?
#2x+3y=4#
#4x+5y=5#

Why is this wrong when I solve for finding the inverse of the matrix by using gauss jordan elimination?

What is the total volume of gas produced from the decomposition of #100cm^3# of #0.2 mol#/#dm^3# hydrogen peroxide(#H_2 O_2#)?

Help! I'm not good in circuits! Can you please explain the answer to me?

Looking for answers for a)iv), a)v) and c)... Is my brain not working or are the answers in my book wrong? An explained answer is much appreciated!

I was taught that if the adjacent length was longer than the opposite length of a known angle, there would be an ambiguous case of the sine rule. So why does d) and f) not have 2 different answers?

What is the upper and lower bound of #c/a  b/d#?

Why isn't this triangle an ambiguous case? (where there can be 2 possible triangles from the same set of lengths and an angle)

In the shoots of plants, do auxins cause curvature and elongation of the cells or allow them to grow faster? Or is it both?