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Questions in chemistry

[Done] Find the number of centimeters in [tex]1.00 \times 10^2[/tex] yards.

[Done] What is responsible for changing liquid water into water vapor?

[Done] Determine the number of meters in 1.00 mile.

[Done] What effect can new observations have on a scientific theory?

[Done] Explain how chemicals and chemical reactions are an important part of our lives.

[Done] Melting of ice is a spontaneous reaction at room temperature and pressure because melting is accompanied by _____. A. a decrease of entropy B. a decrease of energy C. an increase of energy D. an increase of entropy

[Done] When acid comes into contact with calcite, it bubbles. How can geologists confirm that the rock towers are made of limestone?

[Done] What is the element hydrogen made from?

[Done] The weight of an object is the product of its mass, \(m\), and the acceleration of gravity, \(g\) (where \(g = 9.8 \, \text{m/s}^2\)). If an object’s mass is \(m = 10 \, \text{kg}\), what is its weight? Express the weight to two significant figures and include the appropriate units.

[Done] How do geology and the geosphere compare?