The atomic number displayed on the periodic table gives the proton number.
For example, neon is the 10th element, with 10 protons.
<span>Answer: option C) pure substance.
</span><span />
<span>Justification:
</span><span />
<span>A sharp melting point is a characteristic of pure substances.
</span><span />
<span>The pure substances are either elements or compounds: they have a unique chemical constitution (kind of elements, number of atoms of each element in the chemical formula, and same chemical bonds).
</span><span>
</span><span>
</span><span> Other products, this is mixtures (either homogeneus or heterogeneous), being composed of different elements and compounds in different variable ratios, exhibit a range as boiling point. For example the boiling point of the gasoline is about 19°C to 200°C.
</span>
Bromine is an element: you find it in the periodic table, with the atomic number 35, hence a pure substance.
<span /><span />
Castor oil contains fatty acids that have moisturizing, skin health-enhancing, and antioxidant properties. These fatty acids may also help minimize wrinkles. Castor oil also has emollient properties known to help improve your skin's texture and healthy appearance.
Condensation is the warming process. Heat energy is released by the gas when it condenses into a liquid.
Condensation is the change of the state of matter from the gas phase into the liquid phase, and is the reverse of vaporization. It can also be defined as the change in the state of water vapor to liquid water when in contact with a liquid or solid surface or cloud condensation nuclei within the atmosphere.
I really do hope this helps and i hope you have a wonderful weekend
~hailey lee
Answer : The concentration of nitrate ions is 0.450 m.
Solution : Given,
Molarity of = 0.225 m
The balanced ionic equation is,
From the reaction, we conclude that the 1 mole of produces 2 moles of ions. That means the concentration of nitrate ions is twice the value of .
then, 0.225 m of gives 2 × 0.225 of ions
Now the concentration of ions is equal to 0.450 m.