Suppose you wanted to heat a mug of water (250 mL) from room temperature 25 C to 100 C to make a cup of tea. How much energy (in units of calories and joules) would you need from your microwave?

What two layers make up the lithosphere

Can you explain why the elements on the right hand side of the periodic table receive electrons instead of giving them up?

Which of the following is an example of how a scientist might use a model A. Marbles placed inside a hollow sphere are used to describe protons in a nucleus B. Stopwatches measure the amount of time it takes for runners to complete a mile C.

Iron Man died in Infinity Wars, so Mrs. Nogaki has decided that she is going to make her own super hero suit to save the world. She has decided that her suit must have these properties.

Acid indigestion is sometimes neutralized with an antacid such as magnesium hydroxide (Mg (OH) 2). What products will be released when the antacid is mixed with the hydrochloric acid in the stomach

Nitrogen and hydrogen react to form ammonia as described by the chemical equation below: N2 + 2 H2 → 2 NH3 If you start with 2 moles of N2, how many moles of NH3 can you make? Fill in the t-chart below to answer the question.

In which substance do the molecules have the strongest attractions to one another?

Which of the following correctly describes a property of an atom? it has more protons than neutrons it has a negative or positive charge it has an equal number of protons and electrons it has an equal number of neutrons and electrons

Name two metals that do not always lose the same number of electrons

What is the leading cause of global climate change?