An atom of oxygen has eight electrons and wight protons true or false

If u take epsom salt and water leave it for a day what forms overnight A. B. Crystals Rocks

How many grams are in 6.50 moles of h2so4?

For the reaction 2H₂ (g) + O₂ (g) → 2H₂O (g), how many liters of water can be made from 7.5 L of oxygen gas and an excess of hydrogen at STP?

1. The heating system that uses the energy of the sun to produce heat is a

What happens to ice as it melts

The atomic number of calcium (Ca) is 20, and it's mass number is 40. What is true about the subatomic particles that make up a neutral atom of calcium? A) It has 20 protons, 20 neutrons and 20 electrons.

Explain why a sidewalk has built-in cracks every few feet?

How many periods does the periodic table have? 7 18 9 8

Which one is correct A. It allowed them to escape B. It allowed them to chase down C. It allowed them to reach food D. All of these

A 20.0 mL sample of hydrochloric acid was neutralized with 58.4 mL of 0.250 M NaOH, in a titration. a. Write the balanced chemical equation for the reaction, b. What is the concentration of the hydrochloric acid?