Dilute sulphuric (vi) acid was added to a compound of magnesium P. The solid reacted with the acid to form a colourless solution, Q and a colourless gas R which formed a
white precipitate when bubbled through lime water
(a) Name
(i) Compound P
ii) compound Q
(iii) Colourless gas R

Agas can holds 2.0 gal of gasoline. what is this quantity in cubic centimeters?

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space