What is the density if the weight is 40.5 and the volume is 15.0

A walkman uses a current of 2.0 A and has an internal resistance of 3.0 Ω, how many 1.5V batteries are required?

An element with the smallest anionic (negative-ionic) radius would be found on the periodic table in Group 3, Period 4. Group 17, Period 2. Group 1, Period 7. Group 5, Period 3.

1. An acid is a substance that has a pH value that is lower than 7. A base is a substance that has a pH that is greater than 7. Citric acid commonly present in sour foods. Which one of these might be the pH of a citric acid solution? pH=3.2 pH=7.

Which of these compounds is ionic? A. KF B. CO C. CO2 D. SO2

Phosphagens are a group of molecules that includes creatine phosphate (in vertebrates), and arginine phosphate, lombricine, and phosphoopheline (in invertebrates). These molecules have similar functions in different organisms.

The reaction below demonstrates which characteristic of a base? Upper C U upper S upper O subscript 4 (a q) plus 2 upper N a upper O upper H (a q) right arrow upper C u (upper O upper H) subscript 2 (s) plus upper N a subscript 2 upper S upper O

What are two examples of decomposers

An unknown substance dissolves in water but it does not conduct electricity before or after it has dissolved.

21% of oxygen in air with barometric pressure of 625. what's partial pressure

Which situations will NOT increase the reactions rate of most chemical reactions A) an increase in temperature B) grind up the solute to increase surface area before mixing C) by increasing the pressure in which the reaction takes place D)