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

Why one of the three structures for c2h2cl2 is nonpolar?

Which answer choice correctly lists the elements found in Period 2 of the periodic table? A. oxygen, fluorine, neon B. sodium, magnesium, aluminum C. nitrogen, phosphorus, arsenic D. beryllium, magnesium, calcium

All of the following are examples of solutions except saltwater bronze air water

Malika wants to calculate the velocity of her mom's car as it travels down the interstate. She knows that her mom is traveling east. What else does she need to know? Check all that apply.

What are 3 physical properties of a log?

Iron metal has a specific heat of 0.449J/g°C. How much heat is transferred to a 5.00 a piece of iron, initially at 20.0°C, when it is placed in a beaker of boiling water at 1 atm? Use Q = mcAt formula For chemistry

Which type of change occurs when the electrons of two atoms interact to form an atomic bond?

Which of the following is considered electronically perfect? a) Potassium b) Magnesium c) Argon d) Chlorine

The area of the circular base of a can of dog food is 12.5 in. The can is 6 inches high. What is its volume?

What is the tested variable in the experiment?