An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

20

The answer is 25

What are test called in sciene

What are compounds mde of

Liquid X is known to have a higher surface tension and higher viscosity than Liquid Y Use these facts to predict the result of below experiment: Experiment: Identical wire loops are dipped into Liquid X and Liquid Y, so that a film of liquid forms

Erica is working in the lab. She wants to remove the fine dust particles suspended in a sample of oil. Which method is she most likely to use? A reverse osmosis B osmosis C filtration D dilution

Would changing the amount of NaOH used in reaction 1 affect the value obtained for the energy given off per mole of NaOH? Explain.

You would know you were in the troposphere If? It were raining on you You were floating in space You were flying in a high altitude jet You were in the ozone later

A burning match is an example of a chemical change phase change nuclear change physical change

The table below shows the shapes of two samples, C and D, when placed in three containers of different shapes.

How many grams of KCl are produced when 60 grams of K are reacted?

Whats a solution! people