Ask a question
Can't find the answer? Try online tutoring
We have the UK’s best selection of online tutors, when and for how long you need them.
Getting 1-on-1 support is cheaper than you might think.
I need additional help for my final year in A level in chemistry to reach my target grade. Can any one tutor Sundays ?
You are to write an argumentative essay on Which Element do you think is the best/most useful one on the periodic table? Your reasons and claims should be supported by evidence. You cannot make a claim/ reason/ statement without proper evidence to support it. You will pick an element and compare and contrast it to 3 other elements. You will have to do research on your elements and counter elements, do determine your points and counter points. You also need to think of the negatives/ cons to each reason/ statement .. meaning the other point of view. You need to address the counter points/ other points of view, with evidence, and then explain why your element is better one. It is critical that when your paper is read, your element is support beyond a shadow of a doubt.
You need to cast an alloy of titanium (Ti) containing 46 at.% aluminium (Al). Using the information from your periodic table, estimate how much Ti and Al you will need to put in the crucible in order to cast a 100 g ingot of this alloy. b) By mistake, you added to the crucible 32.4 g of Ti and 67.6 g of Al. Work out the composition of your ingot in at.%.
Assuming 65 % of a human body is water (H2O) and the rest is mostly carbon (C), estimate the number of atoms in a human body
A chemical solution prepared by dissolving 256.36 g of naphthalene in 234.36 g benzene. Apressão vapor of pure benzene is approximately 95 Torr at 25 ° C. What is the approximate partial pressure of benzene vapor in the mentioned solution? a) 65 Torr b) 24 Torr c) d 57 Torr) and 38 Torr) 32 Torr