Answer:
Basically, a variable is any factor that can be controlled, changed, or measured in an experiment. It's anything that can be changed in the experiment.
Explanation:
Scientific experiments have several types of variables. The independent and dependent variables are the ones usually plotted on a chart or graph, but there are other types of variables you may encounter. The presence/absence of the chemical is the independent variable. The health of the (ex:)rat (whether it lives and can reproduce) is the dependent variable.
Answer:
Carbon moves from the atmosphere to the land, ocean, and life through biological, chemical, geological and physical processes in a cycle called the carbon cycle. Because some carbon gases are greenhouse gases, changes in the carbon cycle that put more carbon in the atmosphere also warm Earth’s climate.
Mass O = 1.187 - 1.054 = 0.133 g
<span>Moles O = 0.133 g / 16 g/mol = 0.00831 </span>
<span>Moles metal = 2 x 0.00831 = 0.0166 </span>
<span>Atomic mass metal = 1.054 g / 0.0166 = 63.4 g/mol </span>
<span>( this is the atomic mass of Cu) </span>
<span>so the metal oxide is Cu2O</span>
Answer:
Haber-Bosch was the first industrial chemical process to use high pressure for a chemical reaction. It directly combines nitrogen from the air with hydrogen under extremely high pressures and moderately high temperatures