Which discovery is considered to have led to the greatest advancements in the field of medicine?

What body part sorts food and air so they can make it to the proper body system for processing?

Identify the following as mineral or ore: A) it is always made up of the same chemical element or elements. B) it contains crystals of a specific shape. C) it is the primary product of mining. D) it is rock containing elements to be extracted.

Suppose that a fictitious element, x, has two isotopes: 59x (59.015 amu) and 62x (62.011 amu). the lighter isotope has an abundance of 71.7%. calculate the atomic mass of the element x.

Um átomo X possui 8 neutrons e seu número atômico e igual a 8. Sabendo que esse atomo é isótopos de Y, que possui número de massa 18, responda: Qual o numero de nêutrons do atomo Y?

The reaction between 4-methyl-1-pentanol and pbr3 to yield 1-bromo-4-methylpentane is probably:

What volume of carbon dioxide measured at STP will be formed by the reaction of 1.42 mol of oxygen with 0.900 mol of ethyl alcohol?

Substance A and substance B were dissolved in two separate 100 mL beakers of water, which each started at a temperature of 25.1°C. The mixtures' temperatures were measured and recorded as shown in the table below. Substance Initial Temp. Final Temp.

Jaina just got home from a difficult workout. She is complaining of muscle soreness and cramps. Which waste product of fermentation caused the soreness and cramps?

Balance equation C5H10+O2=CO2+H2O

The Scott Test is used when which drug is suspected?