How would you explain the difference between an element and an atom?

Write the chemical symbols for three different atoms or atomic anions with 35 electrons.

How much hbro must be added to 1l of pure water to make a solution with a ph of 4.25? ka = 2.00 * 10-9?

Succinate dehydrogenase catalyzes the conversion of succinate to fumarate. The reaction is inhibited by malonic acid, which resembles succinate but cannot be acted upon by succinate dehydrogenase.

If instructed to remain inside during a chemical attack, you should

A sample of N2 gas occupying 800 mL at 20.0°C is chilled on ice to 0.00°C. If the pressure also drops from 1.50 atm to 1.20 atm, what is the final volume of the gas? Which equation should you use?

Conversion. 5 km to inches

How many kilojouls are required at 0c to melt an ice cube with a mass of 25g

Which substance is the oxidizing agent in this reaction? 2CuO+C→2Cu+CO2 Express your answer as a chemical formula.

Why does the light bulbs have to be part of the loop in order for it to be succesful?

Which best describes the transition from gas to liquid? Energy must be removed because particles in liquid move more slowly. Energy must be added because particles in liquid move more quickly.