To carefully observe, study, or test
something in order to learn more about it, a procedure called an investigation
must be carried out. Scientists make certain assumptions to
reach this goal. It is assumed by scientists that:
<span>1.
</span>Thru a systematic
study, nature can be understood.
<span>2.
</span>Revisions are
something that scientific ideas are open to.
<span>3.
</span>The test of time is
something that sound scientific ideas withstand to.
<span>4.
</span>Answers to all
questions cannot be provided by science.
Laws of nature are expressed as scientific laws.
<span>Nature is thought by scientists as a single system that is
managed by natural laws. Scientists attempt to increase their understanding of
the natural world by discovering natural laws. Scientific laws are the
expression of laws of nature.</span>
Answer:
Because they lack chlorophyll (a green pigment in plants that helps them trap sunlight, used to manufacture their food through photosynthesis)
Explanation:
Mushrooms are heterotrophs. They are not plants or autotrophs. Mushrooms, just like every living thing that exists need energy in order to live. Only plants, or autotrophs, can directly use energy from the sun (the ultimate energy) to make food. Those organisms that cannot harness the sun's energy are known as heterotrophs. Mushrooms are fungi (belong to kingdom Fungi) and are heterotrophs because they decompose and consume nutrients from the soil. They are not green so they cannot photosynthesis due to lack of chlorophyll.
Answer:
The pressure is 0,97 atm
Explanation:
We apply Boyle Mariotte's Law, where for a certain mass of gas, at constant temperature, the pressure and volume vary inversely proportionally: P1x V1 = P2 x V2 P2= (P1 x V1)/V2
P2 = 1, 50 atm x 5, 00 L /7,74 L
P2= 0, 97 atm
Answer:
a. BaCl2 is ionic compound.
b. CH4 is covalent compound.
b. MnO2 is ionic compound.
e. H2S is covalent compound.
c. H3AsO4 is ionic compound.
f. CH3OH is covalent compound.
Explanation:
BaCl2, MnO2 and H3AsO4 are ionic compounds due to the presence of ionic bond between the atoms while on the other hand, CH4, H2S and CH3OH are covalent compounds due to the presence of covalent bond between their atoms. In covalent bonds, sharing of electrons occur whereas in ionic bonds, complete transfer of electrons occur from one atom to another atom.