A student place a 12-gram cube of ice inside a container. after six hours, the student returns to observe the contents of the container. Which sentence suggests that the container is an open system?

Place the atomic theories in the order in which they were published.

What is the length of time an organism is expected to live?

Explain the law of conservation of matter using your own examples.

If a neutral atom has a mass of 12 amu and an atomic number of 5, determine the number of protons, neutrons, and electrons in the atom.

A 500 ml of naoh aqueous solution was prepared by dissolving 10.0 grams of naoh pellets in di water using a 500 ml volumetric flask. what is the molarity of the naoh solution?

During a lab, you heat 1.04 g of a niso4 hydrate over a bunsen burner. after heating, the final mass of the dehydrated compound is 0.61 g. determine the formula of the hydrate and also give the full name of the hydrate.

Which molecule is a source of energy, a store of energy, and can mix with water?

How many atoms will you find in 2.0 moles of he?

An atom of nitrogen has seven electrons. Which diagram correctly respresents the arrangement of these electrons?

A farmer has concerns about the nitrogen levels in her soils. What can she do to ensure that the nitrogen bacteria are replenished in the soil? Question 6 options: Clear cut the area surrounding the field.