Answer:
1. troposphere
2. less dense/decreases
3. ozone
4. nitrogen
5. xylem
6. flagellum
7. kingdom fungi
8. Ocean convection currents
9. As they fly, insects spread pollen that sticks to their bodies from the flowers.
10. the plastic handle, because it is a good insulator.
11. The hyphae, or feeding structures, reach deep into the wood to obtain nutrients
12. chemical energy
13. created or destroyed.
14. electromagnet
15. c
16. kinetic, elastic potential
Answer:
53.29% of acetic acid is Oxygen
Explanation:
Step 1: Given data
Acetic acid it's molecular formula is HC2H3O2. This means it consists of 3 elements Carbon, Hydrogen and oxygen.
Step 2: the molar masses
The molecular mass of acetic acid is:
4* H = 4* 1.01 g/mole
2* C = 2*12 g/mole
2*O = 2* 16 g/mole
Total molar mass = 4+ 24+32 = 60.052 g/mole
Step 3: Calculate the mass percent
32 g of the 60.052 g is Oxygen
(32/60.052) *100% = 53.29%
53.29% of acetic acid is Oxygen.
Answer:
Option B
Explanation:
The reaction can be summarized as
6O2+C6H12O6——›6CO2+6H2O+Heat
Answer:
3.727x10^24 atoms.
Explanation:
When calculating how many molecules are in a compound or element, we refer to Avogardo's number.
Your equation will look like this: 1 mole/ 6.022x10^23 molecules (Avogardo's number).
Multiply 6.19 by Avogardo's number to get your answer.
