Answer: 45
Explanation:
Recall that mass number = number of protons + number of neutrons. Hence, the mass number of the atom
= 22 + 23
= 45
Furthermore, the atomic number is equal to the number of protons. Hence, since the number of protons is 22. the atom has an atomic number of 22
Thus, An atom that contains 22 protons,
23 neutrons, and 22 electrons would have a mass of approximately 45
Answer:
The electrochemical phenomenon of rusting of iron can be described as : At Anode: Fe (s) undergoes oxidation to releases electrons. Electrons released at anode move to another metal and reduce oxygen in presence of H+. It is available from H2CO3 formed from the dissolution of CO2 from air into water.
Answer:
<em>Matter can be broken down into two categories: pure substances and mixtures. </em>
<em>Pure substances are further broken down into elements and compounds. ... A chemical substance is composed of one type of atom or molecule.</em>
<em> A mixture is composed of different types of atoms or molecules that are not chemically bonded.</em>
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<em>hope this helped</em>
Answer:
Explanation:
Aside the boiling point of water, another colligative property that can be used to identify pure water (or not) is the freezing point. Water freezes at 0 °C, but with the presence of impurities, there is a freezing point depression of the water. Thus, if the water is not pure, the liquid could freeze at a temperature lower than 0 °C (with a negative sign like -8 °C).
Answer:
Heat is something you can't control
Explanation:
Plastic is something you could control like moving it around