No. 1a. Atom 1 must be sodium (Na)
No. 1b. Atom 2 must me calcium (Ca)
No. 2 Isotopes are elements with theSAME NUMBER OF PROTONS but with DIFFERENT NUMBERS OF NEUTRON. The number of neutrons can be determined by SUBTRACTING the atomic number from the ATOMIC MASS. The mass number is THE TOTAL NUMBER OF PROTONS AND NEUTRONS.
3. The number of protons
Answer:
Sit by the fire to warm up
Explanation:
Answer:
[H3O+] = 10-pH or [H3O+] = antilog (- pH) Example: What is the hydronium ion concentration in a solution that has a pH of 8.44? On a calculator, calculate 10-8.44, or "inverse" log ( - 8.44).
Explanation:
Answer:
1. A mole is the amount which contains as many elementary particles as there are atoms in 12 grams of carbon-12. It is also the unit used in measuring the amount of matter. A mole also refers to the Avogadro's number of particles present in any substance.
2. 1mole of NaOH contains 6.02x10^23 atoms.
Therefore, 3.8 moles of NaOH will contain = 3.8 x 6.02x10^23 = 2.288 x 10^24 atoms
3. Molar Mass of Ca(OH)2 = 40 + 2(16+1) = 40 2(17) = 40 + 34 = 74g/mol
Explanation:
Answer is: A) atmospheric pollutants.
Nuclear power plants do not produce air pollution as carbon dioxide, sulfur dioxide.
Nuclear (radioactive) waste is hazardous to all forms of life and the environment.
Long term storage of radioactive waste is needed. It is important the stabilization of the waste into a form which will neither react nor degrade over many years.
If nuclear waste is wasted in atmosphere or into oceans and lagre lakes, eventually it will come in contact with living organisms.