B.
Isotopes is an atom has same number of electrons and protons but different number of neutron.
Answer:
7 cm
Explanation:
If the following digit is greater than or equal to 5, the decimal place is rounded up (moved up to the next number); if the following digit is less than 5, the decimal place stays the same.
4.6 + 2.35 = 6.95 cm
However, as stated in your question, cm is only being measured to the nearest 0.1 centimeters in your question.
So, you would round the digit 9 up by 1, meaning you would round it to 10. However, there are only nine digits available in our base-10 counting system, so you carry the value over,
6.95 cm could be rounded to '6. 100 cm', which is 7 cm.
Answer:
2 differet atoms.
Explanation:
Molecule: group of two or more atoms held together by chemical bonds. So, minimum 2 atoms are required to form a molecule.
Answer: 
Explanation:
A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.
The balanced chemical equation when when aqueous solutions of chromium(III) sulfate and calcium nitrate are combined is:
