CO2 and NaCl are both compounds
Answer:
False
Explanation:
Atoms only achieve complete outer electron shells if they contain an outer shell with 7 electrons before gaining another electron or an outer shell with 1 electron before losing an electron. This is assuming that the octet-rule can be applied to said atom. In addition, the number of valence electrons varies from atom to atom which is why not ALL atoms achieve complete outer electron shells after gaining or losing just ONE electron.
Hi there!
D is true
the number of protons is same as atomic number in an atom
good luck!
All of the above
Explanation:
Science is a methodical way of investigating the world around us in order to find out the truth and facts about them. Technology is the practical aspect of science.
- The knowledge and understanding of x-rays as part of the electromagnetic radiation made it possible to use the rays to study the internal structures of substances.
- The discovery of radioactivity has led to the development of nuclear energy that are produced in nuclear reactors.
- Satellites are built on the principles of science.
- Robotic machines are based on scientific studies and electricity originated from a good knowledge of the atom.
Learn more:
radioactivity brainly.com/question/10125168
#learnwithBrainly
Answer:
0.0111mol/L
Explanation:
M = n/V
We don't know n, but we know that n =mass/Molar mass, so:
n = 8.77g/166.0028 g/mol
n = 0.0528304342mol
M = n/V
M = 0.0528304342mol/ 4.75L
M = 0.111221967mol/L
Round to three sig figs if necessary: 0.0111mol/L
