Hardness is related to:

specific gravity

surface roughness

size of the sample

strength of chemical bonds

A sample of gas has a mass of 0.0707 grams and has a volume of 48.9 milliliters. What is the density of this gas?

Convert: 20.9 mL = ___L 2.09 0.209 0.0209 209 20.9

How many grams of mercury are present in a barometer that holds 6.5mL of mercury? ... ?

Which method can be used to make a reliable guess that a victim was under 17 years old? A) look for flat-bladed incisors B) look for presence or absence of wisdom teeth C) multiply the internal distance in centimeters between the coronoid processes

Did the valence electron theory apply on the compound SO3? Explain (S = 16 O = 8)

Consider n2 (g) + 3h2 (g) →→ 2nh3 (g). what is the mass of nitrogen gas required to react with 0.129 g h2?

Write a sentence that uses the words "mass extinction" correctly

Which description is not a property of an acid? A turns litmus paper red B bitter taste C corrosive D dissolve metals

Concerning the 10.0 mL of 0.50 M NaCl diluted to 100 mL of solution: When a solution is diluted, does the dilution change the number of grams dissolved? yes no

What causes element name to change