Rita was sitting in the garden and reading a book a sudden breeze went by her and she sneezed this reaction is a type of __? action (involuntary, voluntary)

In this case Rita's response was controlled by her___? (brain heart or nerves)

What causes metamorphic rocks to form from cristing rocks? A. magma and minerals B. heat and pressure C. exposure to Earth's mantie D. exposure to Earth's surface

Explain how changing the concentration of reactants can affect the rate of reaction.

When hydrochloric acid and zinc were combined, the flask was sealed and thus no gas could escape from the flask. why did the pressure decrease as the temperature decreased?

What is true about valence electrons? They are those electrons that are neutrally charged They are those electrons that are found in the nucleus They are those electrons that are closest to the nucleus They are those electrons that are furthest from

An aqueous of H3PO4 was prepared by dissolving 8.85 g in enough water to make 350.0 mL solution. Also, an aqueous solution of Ca (OH) 2 was prepared by dissolving 15.76 g of Ca (OH) 2 in enough water to make 550 mL solution.

Change of state may occur when?

During the combustion of 2.00 g of coal, the temperature of 500 g of water inside the calorimeter increased from 25.0°c to 43.7°c. the specific heat of water is 4.18 j/g·°c. how much heat did the reaction generate?

Catalysts are substances that increase the rate of reaction but can be recovered unchanged at the end of the reaction. Catalysts can be classified as either homogeneous (same state as reactants) or heterogeneous (different state than reactants).

How many molecules are there in 79g of Fe2O3?

Which of the following elements is an alkall metal?