If a 4000g of salt water contains 40g of salt, what is its mass percent​

Answer(false);

Answer(2) electrons;

The surface of the water droplet is held together by the attraction between molecules. in order for water to flow more easily into these small spaces, you need to decrease its surface tension. you can do this by adding soap, which is a surfactant (a material that decreases the surface tension of a liquid).