Answer:
B
Explanation:
bonding is a process of two different atoms sharing electrons for stability and these electrons are attracted by one atom losing it's electrons to another
Answer:
![V_{base}=6.0mL](https://tex.z-dn.net/?f=V_%7Bbase%7D%3D6.0mL)
Explanation:
Hello there!
In this case, by considering that the reaction between sodium hydroxide and hydrochloric acid is in a 1:1 mole ratio of these two reactants, we are able to use the following equation relating the concentration and volume of each one:
![M_{acid}V_{acid}=M_{base}V_{base}](https://tex.z-dn.net/?f=M_%7Bacid%7DV_%7Bacid%7D%3DM_%7Bbase%7DV_%7Bbase%7D)
In such a way, by solving for the volume of the base, we will obtain:
![V_{base}=\frac{M_{acid}V_{acid}}{M_{base}} \\\\V_{base}=\frac{0.5M*24mL}{2.0M}\\\\V_{base}=6.0mL](https://tex.z-dn.net/?f=V_%7Bbase%7D%3D%5Cfrac%7BM_%7Bacid%7DV_%7Bacid%7D%7D%7BM_%7Bbase%7D%7D%20%5C%5C%5C%5CV_%7Bbase%7D%3D%5Cfrac%7B0.5M%2A24mL%7D%7B2.0M%7D%5C%5C%5C%5CV_%7Bbase%7D%3D6.0mL)
Regards!
Answer:
Half life is the time taken by a radio active isotope to reduce by half of its original amount. Radium-226 has a half life of 1602 years meaning that it would take 1602 years for a mass of radium to reduce by half.
Number of half lives in 9612 years = 9612/1602 = 6 half lives
New mass = Original mass x (1/2)n where n is the number of half lives.
Therefore, New mass= 500 x (1/2)∧6
= 500 x 0.015625
= 7.8125 g
Hence the mass of radium after 9612 years will be 7.8125 grams.
Explanation:
Answer:its b 7
Explanation:
7 is neutral and pure water is the middle man
L
![M = \frac{n}{V} \\ M = \frac{mol}{L} \\ or \\ M = \frac{mol}{ {dm}^{3} }](https://tex.z-dn.net/?f=M%20%3D%20%20%5Cfrac%7Bn%7D%7BV%7D%20%20%5C%5C%20M%20%3D%20%5Cfrac%7Bmol%7D%7BL%7D%20%20%5C%5C%20or%20%5C%5C%20M%20%3D%20%20%5Cfrac%7Bmol%7D%7B%20%7Bdm%7D%5E%7B3%7D%20%7D%20)
mol/dm³ is measure for molarity