20. An atom has a mass of 50 and 20 protons. How many

neutrons does it have?

Answer:

How many milliliters of. 45m hcl will neutralize 25ml of 1m koh?

The conversion of nitrogen gas to compounds useful to crops is called nitrogen compounding. a. True b. False

The specific gravity of iron is 7.87, and the density of water at 4.00 ∘C is 1.00 g/cm3. You can use this information to find the density of iron. Find the volume occupied by 7.00 g of iron.

How many electrons are in a s-2 ion

What is collision theory? How does it relate to factors that affect reaction rate?

WHY IS THE OCEAN SALTY ALSO I CANT TAKE OF CAP LOCKS ON A CROME BOOK

Compare and contrast steak and juice

Which of the following laboratory tools would be most appropriate for determining the volume of and irregular shape A) ruler B) triple beam balance C) graduated cylinder D) answers b and c

What type of change is the process of photosynthesis

A graduated cylinder is filled to the 40.00-mL mark with a mineral oil. The masses of the cylinder before and after the addition of the mineral oil are 124.966 g and 159.446 g, respectively. In a separate experiment, a metal ball bearing of mass 18.