The new substances that result from a chemical reaction is called product
Atomic number of Fluorine-19 is 9. So, it must have 9 protons. As the mass number is 19, the number of neutrons will be 10.
In Tungsten-184, the number of protons is 74 and the number of electrons should also be 74.
In cobalt-59, the mass number should be 27 protons +22 neutrons = 49.
molarity how i remember is mola( mole)rity
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>
The correct answer is option D, that is, two new compounds.
Double displacement also known as double replacement reactions, metathesis or exchange reactions. It take place when two ionic compounds are exchanged forming two new compounds. One can consider the reaction as swapping the anions or the cations.
Water usually functions as the solvent for a double replacement reaction, and the products and reactants are generally ionic compounds, however, they can also be bases or acids. The example of a double replacement reaction is:
BaCl₂ (aq) + Na₂SO₄ (aq) = BaSO₄ (s) + 2NaCl (aq)
In this, the cations are Na⁺ and Ba²⁺, and the anions are SO₄²⁻ and Cl⁻. If the anions or cations are swapped, the products obtained are BaSO₄ and NaCl.