If you don’t discover a management technique to restore nutrients to your soil, what will happen to your crops? Select all that apply A. Your vegetables will win prizes for being unusually large.
B. Anything you grow will be at high risk for pesticides and diseases.
C. Your land could stop producing vegetables altogether.
D. Your land will be worth less money.

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

How many moles of oxygen gas are produced from the decomposition of six moles of potassium

Dumbledore decides to gives a surprise demonstration. he starts with a hydrate of na2co3 which has a mass of 4.31 g before heating. after he heats it he finds the mass of the anhydrous compound is found to be 3.22 g. he asks everyone in class to determine the integer x in the hydrate: na2co3·xh2o; you should do this also. round your answer to the nearest integ