In the reaction CaCO3 → CaO + CO2 100 grams of calcium carbonate (CaCO3) is observed to decompose upon heating into 56 grams of calcium oxide (CaO) and 44 grams of carbon dioxide (CO2). This is an illustration of

What type of substance reacts with limestone (CaCO3) and produces carbon dioxide gas?

What are two ways that scientists can report results of their experiments

The surface temperature on Venus may approach 745 K. What is this temperature in degrees Celsius?

Tell me if these are right 24. earth's rigid out layer, consisting of the crust and uppermost mantle, is called the {" (Lithosphere) "} 25.

A reaction takes place in a bomb calorimeter. if the calorimeter decreases in temperature over the course of the reaction, what are the signs of qcal and qrxn?

Lithium (Li) and oxygen (O) are both in period 2. They both have? a. similar properties b. the same number of protons c. two electron shells d. the same number of electrons

What compares a law and a theory?

Explain what domain would best be represented by the "?" in the diagram. A) Eukarya because the organisms are all eukaryotic. B) Eukarya because the organisms are all prokaryotic. C) Bacteria because some of the organisms are autotrophs.

If you are eating a hamburger, it is an example of a consumer eating another consumer. a) true b) false

What mass of NaNO3 is needed to make 3.5 L of 2.2 M solution? (Na = 23.0g, N=14.0g, O=16.0g) Explain in steps