How many grams of sodium sulfate must be added to make 500. mL of a 0.25 M sodium sulfate solution?

Think critically explain how biotic change in an ecosystem that has flooded?

Who performed the oil-drop experiment?

What makes a pure substance different from a heterogeneous mixture? A.) The components of a pure substance are mixed unevenly instead of evenly within the pure substance. B.

Chemistry can be explained as the study of the properties and reaction of substance. a.) True b.) False

if 2.22 moles of ammonia (NH3) decomposes according to the reaction shown how many moles of hydrogen (H2) are formed?

How does the shape of a structure affect its overall strength

Kim is doing an experiment with sound waves. She tested to see how quickly a sound wave could travel through three different materials: a metal pole, a helium balloon and a glass of water. She recorded her results.

Which of the following is an example of an electric force that occurs in atoms

5. What is another name for Newton's first law in your own words.

The molar mass of magnesium (Mg) is 24.30 g/mol. There are 6.02 1023 atoms in 1 mol. How many atoms are present in 48.60 g of Mg? 3.32 10^-24 atoms 1.96 10^-21 atoms 1.20 10^24 atoms 7.11 10^26 atoms