What is the importance of water on earth?

A) it keeps the top layer of the geospere cool

B) it allows life to exist

C) it provides ice at the poles

D) it creates earths blue color from space

Rank the compounds in order of increasing basicity (you are not supposed to look up Kb values; do it only on your knowledge of the structure of amines): sodium hydroxide (1), ammonia (2), methylamine (3), dimethylamine (4)

In which state of matter would you expect to find water, at 20°C on Earth?

more Chem. Calculate the amount of solute needed to prepare the following solutions: a. 50.0mL of a 5.0% (m/v) KCl solution b. 1250 mL of a 4.0% (m/v) NH4Cl solution ... ?

In the chemical reaction below, sodium (Na) and chlorine (Cl) combine to form sodium chloride (NaCl). 2Na + Cl2 → 2NaCl If the combined mass of the starting reactants is 50 grams, then the mass of sodium chloride formed once the reaction has reached

What is true about tRNA's: O they vary widely in size O they can covalently bond to more than one type of amino acid 0 they do not have any stem loop structures O they contain an anticodon triplet that recognizes a mRNA codon 0 there are exactly 20

A particular yeast ferments glucose (c6h12o6; molar mass = 180.2 g/mol) and generates ethanol (c2h5oh; molar mass = 46.07 g/mol) with an 87% yield. what mass of glucose is required to produce 475 g of ethanol by this process?

You purchase several rolls of fiberglass insulation and pay extra for installation. Have you purchased a product or a service?

What organelle does the process of cellular respiration?

How much heat is absorbed during production of 127 g of NO by the combination of nitrogen and oxygen? N2 (g) + O2 (g) →2NO (g), ΔH = + 43 kcal/mol

Which of the following is the result of the process that binds many amino acids on to another? a. protein b. allele c. dna d. rna