An 8.10-g sample of hydrated magnesium carbonate is heated. It has a mass of 4.94 g after heating. What is the percentage by mass of water in the hydrate?

3.16%

17.6%

39.0%

61.0%

What is the difference in molecular and ionic

Which step of the scientific method involves obtaining information through the senses? A. analyzing data B. drawing conclusions C. making observations D. revising a hypothesis

Based on the periodic table, what do we now call the element mendeleev called eka-manganese?

Reactions cannot occur without a certain minimum amount of energy. what is this minimum amount of energy called?

Explain how atomic size of d-block is smaller than s-block orbital

All the metalloids names

What can scientists measure to provide evidence that electrons can move from one energy level to another?

What causes a pendulum to move in an extended amount of time?

Formula de sulfato de calcio

How does protein substance in an animal hide or skin be prevented from bacterial infection during the process of tanning? * a. By soaking in water b. By deliming using an acid c. By brine curing d. By scudding with dull knife