Answer:
d. Electrons have a negative charge and are lighter than protons
Explanation:
The best statement that describes electrons is that electrons are negatively charged and are lighter than protons.
There are three known subatomic particles which are:
- Protons which are the positively charged particles within an atom.
- Electrons are the negatively charged particles
- Neutrons do not carry any charges.
The mass of the protons and neutrons are similar.
Electrons are lighter than both protons and neutrons.
Answer:
the answer is lungs
Explanation:
All of the animals from frogs and up have and use lungs.
Answer:
CaCO3(aq) → Ca2+(aq ) + CO3 2-(aq)
Explanation:
- Dissolution reactions are reactions that occur when a solute either in gaseous, liquid, or solid form dissolves in a solvent such as water to form a solution.
- In this case we are given Calcium carbonate (CaCO3) which undergoes dissolution according to the equation;
- CaCO3(aq) → Ca2+(aq ) + CO3 2-(aq)
- Then<em><u> the bicarbonate ion combines with two protons from water to form a weak acid H2CO3. The weak acid is then broken down to form CO2 and H2O since its unstable.</u></em>
Hydrocarbons
Hope this helps :)
