Answer:
The coldest temperature possible
Explanation:
Absolute zero = 0 K
A. is wrong. 0 °C = 273 K
B. is wrong. -210 °C = 63 K
C. is wrong. 32 °F = 273 K
E. is wrong. -196°C = 77 K
NaHCO3 = 22.99 + 1.008 + 16(3) = 83.99 g/mol
<span>Na = 22.99g/83.99 g weight of molecule =.2727 or 27.27% </span>
<span>3.0 g* .2727 = 0.8211 grams of sodium in sample of NaHCO3
</span><span>0.8211 grams Na + 1.266 grams Cl = 2.087 grams</span>
Answer: Chemicals become positively charged by loosing electrons.
Explanation: There are three types of compounds:
1) Neutral compounds: These are the compounds where equal number of protons and electrons are present.
2) Positive compounds: These are the compounds where number of protons are more than the electrons. These are considered as cations.
3) Negative compounds: These are the compounds where number of electrons are more than the protons. These are considered as anions.
So, in order to have a positive charge on a compound, that compound has to loose electrons, so that the number of protons gets higher than the number of electrons.