Which change results in the formation of different substances?

1. Which of the following is true about theories? They are false all the time. They cannot be misproven. They are absolute truths. They are accepted as true because of confirmation by experimentation.

Which condition would lower the salinity of ocean water? A. high rates of evaporation B. freezing of glaciers C. extremely hot weather D. a river flowing into the sea

What is matter im confused

The strongest attractive forces between molecules of Cl 2 are dispersion forces

Suppose you have 100 grams of a radioisotope with a half-life of 100 years. How much of the isotope will you have after 200 years?

A student prepares 150.0 mL of 1.40 M HCl using 35.0 mL of a stock solution. What is the concentration of the stock solution?

True or false? All atoms of the same element have the same atomic mass

Write a balanced equation for the reaction of copper with silver nitrate. According to the balanced equation, what is the mole ratio of silver produced to copper reacted? _ mol Ag produced : _mol Cu created

Describe what happens to the potential energy if you increase the mass of the object. IL

The mass of the ocean is about 1.8 X 10^21 kg. If the ocean contains 1.076% sodium ion, Na+, what is the mass in kilograms of sodium in the ocean?