An element has an atomic number of 30. How many protons and electrons are in a neutral atom of the element?

A. 30 protons, 30 electrons

B. 15 protons, 15 electrons

C. 60 protons, 30 electrons

D. 30 protons, 0 electrons

What is a scientific claim

How many grams of sodium polyacrylate are in one diaper?

Iodine, I2, is a solid at room temperature but sublimes (converts from a solid into a gas) when warmed. What is the temperature in a 73.3-mL bulb that contains 0.292 g of I2 vapor at a pressure of 0.462 atm

Two kinda of legal cases are

How did john dalton explain a chemical reaction using his atomic theory?

The word atom means invisible?

A pycnometer weighs 25.60 g empty and 35.55 g when filled with water at 20°C. The density of water at 20°C is 0.9982 g/ml. When 10.20 g lead is placed in the pycnometer and the pycnometer is again filled with water at 20°C, the total mass is 44.83 g.

How does weathering affect the surface area of a rock? Explain your answer.

How would each of the following procedural errors affect the results to be expected in this experiment? Give your reasoning in each case. (A) Not all of the liquid was vaporized when the flask was removed from the water bath.

What volume of 2.00 m must be added to 150.0 ml of 1.00 m chloroacetic acid to produce a buffer solution having a ph of 3.30?