Which statement is correct? (

a. electrons of a neutral atom always equal the number of protons, (

b. neutrons always equal the number of protons, (

c. neutrons always equal the number of electrons, (

d. atomic weight is identical to atomic mass.

What are the spectator ions in the reaction between aqueous nitric acid and ammonia?

A mixture of H2 and NH3 has a volume of 137 cm^3 at 0.00°C and 1.00 atm. The mixture is cooled to the temperature of liquid nitrogen at which ammonia freezes out and the remaining gas is removed from the vessel. Upon warming the removed gas to 0.

The combination of potassium-sparing diuretics and salt substitutes can result in dangerously high blood levels of: a. sodium. b. potassium. c. magnesium. d. zinc.

Rewrite this to make it true: Plants use energy to carry out cellular respiration.

What is NOT true for a catalyst? 1. A catalyst increases the rate of a chemical reaction by decreasing activation energy. 2. A catalyst is not consumed in chemical reactions. 3.

What is the general term for a compound not containing the element carbon?

determine the specific heat of a material if a 35g sample absorbed 96 J as it was heated from 293 K to 313 K?

A compound that changes color when it comes into contact with an acid or base is an?

1. A food sample is burned in a calorimeter that contains 2000. g of water. The temperature increases from 22.0°C to 44.3 °C. How many Calories does the food sample contain, assuming all of the energy from the food was transferred into the water?

Why doesn't water light on fire? It has all the ingredients except heat! Hydrogen for the flammability factor, oxygen so it can keep burning, and all you need to do is add heat and BOOM you have a flame! 15 pts