Density= Mass/Volume I am positive I just had an assignment on this
<span>Made of cells
</span><span>Reproduce
</span><span>Grow and Develop
</span><span>Respond to their Environment
</span><span>Genetic code</span>
Carbon to carbon bond is nonpolar covalent since the difference of their electronegativity’s is 0. Carbon has an electronegativity of 2.5. 2.5 - 2.5 is 0 making the bond between those two atoms nonpolar covalent. I hope I answered your question.
The last photo because its molecular formula is C3H4.
<span>NH4+ and NO3- because barium phosphate is insoluble </span>