Which solid is crumbly, weak, red-brown and in the periodic table (It's probably a metal)

Which halogens are found in period 5 on the periodic table?

Which of the following is NOT classified as a work-environment factor? A. temperature and humidity B. illumination C. feedback D. noise and vibration

If 125mL of a 0.15M NaOH solution is diluted to 150mL, what will the new molarity of the solution be?

Express the concentration of a 0.0610 m aqueous solution of fluoride, f-, in mass percentage and in parts per million. assume the density of the solution is 1.00 g/ml.

Which planet is the smallest and the closest to the Sun? A. Earth B. Mars C. Mercury D. Venus

A van moves 50 miles with a constant speed of 20 mph and another 84 miles with a constant speed of 56 mph. How much time in total does it take to travel these distances? A) 1 hour B) 4 hours C) 1.5 hours D) 2.5 hours

This element is often used to block out dangerous radiation. a. lead b. carbon-12 c. uranium-236 d. uranium-238

Which subatomic particle (or particles) exist in an atom's nucleus?

How many moles of chlorine are in 5.24 liter container of stp?

In your own words list the rules for naming hydrocarbons and substituted hydrocarbons. Be detailed in listing all rules including priority for numbering carbons, prefixes and suffixes, and the structure of the name.