1 gram = 1000 milligrams
/ move the decimal to the left 3 because you multiply by 10^3
5.712 grams = 5,712 milligrams
1 gram = 0.001 kilograms
/ move decimal to the right 3 because you multiply by 10^ -3
5.712 grams = 0.005712 kilograms
Answer:
a substance made by mixing other substances together.
Explanation:
Answer:
3 × 10⁴ kJ
Explanation:
Step 1: Write the balanced thermochemical equation
C₃H₈(g) + 5 O₂(g) ⟶ 3 CO₂(g) + 4 H₂O(g) ΔH = -2220 kJ
Step 2: Calculate the moles corresponding to 865.9 g of H₂O
The molar mass of H₂O is 18.02 g/mol.
865.9 g × 1 mol/18.02 g = 48.05 mol
Step 3: Calculate the heat produced when 48.05 moles of H₂O are produced
According to the thermochemical equation, 2220 kJ of heat are evolved when 4 moles of H₂O are produced.
48.05 mol × 2220 kJ/4 mol = 2.667 × 10⁴ kJ ≈ 3 × 10⁴ kJ
Answer:
Conservation of Mass
Explanation:
Conservation of Mass -
According to the works of Antoine Lavoisier , he stated that , mass is always conserved in a chemical reaction .
For example ,
carbon reacts with oxygen , it forms carbon dioxide ,
But , by using the principle of conservation of mass ,
mass can not created or be destroyed , hence , the mass of the initial state and final remains constant , there is only the transfer of mass or matter .
Answer:
This process is called cellular respiration. During cellular respiration the cell uses oxygen to break down sugar. Breaking down sugar produces the energy your body needs. ... Carbon dioxide is the waste product of cellular respiration that you breathe out each time you breathe.
Explanation: