The constant use of water flow throwout nature and the way that we use it now isint good and most likly we will be out of water by the year 2055
<span>2 Na + CaF</span>₂<span> = 2 NaF + Ca
is an example of a </span>single- replacement
answer D
hope this helps!
Answer: In metallic bonds, the valence electrons from the s and p orbitals of the interacting metal atoms delocalize. That is to say, instead of orbiting their respective metal atoms, they form a “sea” of electrons that surrounds the positively charged atomic nuclei of the interacting metal ions. Metals are shiny.
Explanation: Hope this helped!
Answer:
44 years will take for 10 grams of Actinium to decay until there were only 2.5 grams.
Explanation:
The half life it tell you about the time in which half of the quantity of the isotope will decay.
time (years) quantity of isotope (grams)
0 10
22 5
44 2.5
Answer: Option C) 0.64kPa
Explanation:
Given that,
Original volume V1 = 11.2 L
original pressure P1 = 0.860kPa
New volume V2 = 15.0 L
New pressure P2 = ?
Since pressure and volume are involved while temperature is constant, apply Boyle's law
P1V1 = P2V2
0.860 kPa x 11.2 L = P2 x 15.0L
9.632 kPaL = P2 x 15.0L
P2 = 9.632 kPaL / 15.0L
P2 = 0.64 kPa
Thus, the pressure of the gas is 0.64kPa