An atom of copper (cu) has a mass number of 63 and an atomic number of 29. how many protons does it have?

How does temperature affect reaction rate?

If an object loses electrons it will become negatively charged. True False

Which process will change a substance chemically? A. boiling B. melting C. burning D. evaporating

Allicin (C6H10OS2) contains 59.9 g of carbon, 21.7 g of hydrogen, 24.4 g of oxygen, and sulfur. What is the mass percent of sulfur in a 162 g sample of the compound?

Mountain lions are tertiary consumers. How might the removal of mountain lions affect the flow of matter and energy in the of the energy pyramid?

Will mark as Brainliest. How much energy is released when 16.5 g of steam is condensed at 100 degrees Celsius? -37290 J -3729 J -136 J -136 kJ

What is the mole fraction, x, of solute and the molality for an aqueous solution that is 16.0 % NaOH by mass

What is the square root of 54554? What is the square root of 35654?

Halogens have ... Electron affinity

Observe: Change the Surface area from Minimum to Maximum. You can imagine that a solid reactant has been dissolved in a liquid. How does this change how many Reactant B molecules are exposed to Reactant A?