Ca(OH)2 (aq) because of elements oxygen and hydrogen
Ca(OH)2(aq)+H2SO4(aq)—→ CaSO4(s)+ 2H2O(l)
Answer:
Explanation: the number of circles in the electronic configuration of an element is represented in the periodic table as the period number that element is situated in. the number of electrons in the outermost shell of an element is represented in the periodic table as the group number that element is situated in.
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:
The answer is A
solar energy (from the sun)
Explanation:
Plant cells gets energy through a process called photosynthesis. This process uses solar energy to convert carbon dioxide and water into energy in the form of carbohydrates.