Answer: Scientific notation is used to express very large or very small numbers. ... Scientific notation numbers may be written in different forms. The number 6 x 109 could also be written as 6e +9. The + 9 indicates that the decimal point would be moved 9 places to the right to write the number in standard form
Explanation: i hope it is helpful
The salt dissolves in the water and the sand will gather at the bottom.
1) Chemical reaction: CH₄ + H₂O → 3H₂ + CO ΔH = + 206 kJ/mol.
2) Chemical reaction: CO + H₂O → CO₂ + H₂, ΔH = + 2,8 kJ/mol.
3) Chemical reaction: CH₄ + 2O₂ → CO₂ + 2H₂O ΔH = -802 kJ/mol.
4) Chemical reaction: 2H₂ + O₂ → 2H₂O ΔH = 2·(-242 kJ7mol) = - 484 kJ/mol.
Endothermic reaction (ΔH>o) and exothermic reaction (ΔH<span><0).</span>
The answer would be B) False cause a line graph only shows ''two'' variables, not three.
