Find the new concentration of a solution if 25.0 mL of water is added to 125.0 mL of 0.150 M NaCl solution

Where are each of the three particles located within the atom?

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) ⇌ co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) → co2(g) k=1.363×10^69 b. 2 h2(g) + o2(g) → 2 h2o(g) k=1.389×10^80 c. 2co(g) + o2 (g) → 2 co2(g) k=1.477×10^90