You are performing an experiment in the lab and have reactant a and reactant b. the total mass of
both reactants before the experiment is 15.0 grams. you place the reactants in an open beaker to react
without a lid. the beaker is cold to the touch afterward. you measure the product in the container and
only get a mass of 12.4 grams. what happened to the rest of the mass?
check all statements that are true.
some of the reactants were spilled.
one of the products was possibly a gas.
some of the products changed to pure energy.
ergy.
some of the products were released to the surrounding environment.
the reactants naturally produced less product because of the elements used.
some of the atoms became smaller.
the reaction absorbed energy.
the reaction released energy.

The corect answer is some of the reactants were spilled.

Explanation:

Before the initiation of the reaction the total mass of both reactants is 15.0 grams and after the reaction the net mass of product is  grams 12.4grams.

     This happens because during the reaction some reactant molecules were spilled which ultimately leads to decrease the mass of the reactant molecule.

    The decrease in the amount of the reactant  equals with amount of product formed.

question#1

ans:

cell is the basic unit of organization of all living things. cells are often called the building block of life and it is the smallest unit of life. the study of cell is called cell biology. cell consists of cytoplasm enclosed within membrane, which contain bio-molecules such as proteins and nucleic acid.

two third of cell is water, which means that two-third of your whole body is water. the rest is the mixture of molecules, mainly proteins, lipids and carbohydrates.

question#2

ans:

organ:

an organ is a group of tissues specialized to form a functional unit. an example is the heart in animals.

organ system:

an organ system is a group of several organs whose functions are synchronized to release an effective action in a living organism. an example is digestive system.

question#3

different systems perform different function at tissue level. for example, the respiratory system facilitates breathing. in the alveoli tissue of the lungs, the exchange of oxygen and carbon dioxide molecules between the air and the bloodstream occurs by passive transport, so that oxygen is taken in and carbon dioxide and water are removed. different systems of the body carry out different functions. for example, your digestive system is responsible for taking in and processing food, while your respiratory system working with your circulatory system is responsible for taking up oxygen and getting rid of carbon dioxide.

question#4

different systems perform different function at tissue level. for example, the respiratory system facilitates breathing. in the alveoli tissue of the lungs, the exchange of oxygen and carbon dioxide molecules between the air and the bloodstream occurs by passive transport, so that oxygen is taken in and carbon dioxide and water are removed. different systems of the body carry out different functions. for example, your digestive system is responsible for taking in and processing food, while your respiratory system—working with your circulatory system is responsible for taking up oxygen and getting rid of carbon dioxide.

question#5

our body works because of the interactions that happen between organs and organ systems.  

for example:  

the heart to regulate blood flow throughout the body. the blood carries oxygen and nutrients to the cells and carries carbon dioxide and waste away from the cells. body systems work together in maintaining a constant internal environment. when this balance is disrupted, the body systems may not function properly, and human health can suffer.   you start to feel bad.