238 U 92 is an isotope notation. what is the atomic number, mass number, number of protons, and number of neutrons?

Water molecules attract to one another to form what kind of bonds?

If an electrostatically charged object is placed near other objects, which of the following will occur? Select all that apply. It will be attracted to objects with the same charge. It will be attracted to object of the opposite charge.

What types of substances are considered drugs?

Alkali metals are found in many common substances but are rarely found in pure form. Explain why this is in the case

A 155.0 9 piece of copper at 182 °C Is dropped into 2500 g of water at 23.9 °C. (The specific heat of copper is 0.385 1/9°C.) Calculate the final temperature of the mixture. (Assume no heat loss to the surroundings.)

What jobs involve chesmistry

Think about a neutral magnesium atom. Then think of a magnesium ion with a 2+charge. How are these two alike? How are they different? Be sure to use the terms proton, neutron, and electron in your answer.

What subatomic particle is specifically responsible for combining the atoms together to form a new substance?

A chemist reported that 100 gallons of a gas were available in a laboratory. Which property of the gas did the chemist report?

Is the water density higher than the aluminum density