Answer:
Rn
Explanation:
Rn is the symbol for radon with the atomic number of 86
Answer:
See explanation
Explanation:
The question is incomplete but i will try to give you all the necessary guide that you need in order to answer the question.
When compounds are formed, atoms exchange valency. The valency of nitrogen is three while that of the metal is two. The exchange yields M3N2.
If the compound has been specifically mentioned to be a metal, then it must be a group two element. It could be any of Mg, Ca, Sr, Ba or Ra. I did not mention Be here because most of its compounds are covalent.
This will help you to answer the complete question.
Answer:
158g
Explanation:
To calculate the "weight" (mass) of ethyl alcohol, we have to use this formula:
- Density will have units of gmL when dealing with a liquid or units of gcm3 when dealing with a solid.
The mass has units of grams, g.
The volume will have units of mL or cm3
We are given the density and volume, both of which have good units so all we have to do is rearrange the equation to solve for the mass:
density×volume=massvolume×volume
Density×Volume = Mass
0.789gmL×200.0mL
Thus, ethyl alcohol weighs 158g.
Answer:
Erythrocytes
Explanation:
Water passes through the Bowman's capsule into the glomerular filtrate and so do salts, glucose, urea, amino acids, and a majority of smaller proteins (molecular weight < 68,000). Erythrocytes or other blood cells do not enter the glomerular filtrate.
Answer:
If hydrochloric acid is a polar covalent compound, explain why in aqueous solution it conducts current similarly to an ionic compound.
This occurs because the current is transmitted by the charges of its atoms.
Explanation:
Hydrochloric acid is a compound that is made up of atoms with partial charges, which means that it is a polar molecule. H atoms have a positive partial charge, while Cl atoms have a negative charge, making the molecule as a whole have a neutral charge.
Being a dipole compound, water can dissolve molecules of this type, separate anions and cations. When atoms are separated from these molecules they release ions. In the case of HCl, being an acid, H+ and Cl- ions are released. This separation of charges causes electric current to be conducted.
