You carefully weigh out 17.00 g of CaCO3 powder and add it to 68.85 g of HCl solution. You notice bubbles as a reaction takes place. You then weigh the resulting solution and find that it has a mass of 78.88 g . The relevant equation is

CaCO3(s)+2HCl(aq)→H2O(l)+CO2(g)+CaC l2(aq)
Assuming no other reactions take place, what mass of CO2 was produced in this reaction?
Express your answer to three significant figures and include the appropriate units

organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.

i think it is true since you can test the answer and can use observations to complete it.

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.