Answer:
See explanation
Explanation:
9g of water contains : 9g/18 g/mol = 0.5 mole of water
1) 2 moles of hydrogen yields 2 moles of water
x moles of hydrogen yields 0.5 moles of water
x= 2 × 0.5/2 = 0.5 moles of hydrogen
Mass of hydrogen = 0.5 moles × 2 = 1 g of hydrogen
2) Number of moles of Al(OH)3 = 468 g/ 78 g/mol = 6 moles
2 moles of Al(OH)3 yields 3 moles of H2O
6 moles of Al(OH)3 yields 6 × 3/2 = 9 moles of H20
Mass of water =9 moles × 18 g/mol = 162 g of water
3) There are 13 oxygen atoms in the compound.
Mass of each oxygen atom = 16 g
Total mass of oxygen atoms = 13 × 16 = 208 g
I. Because they're a limited resource
2 Because they're a cause of carbon pollution.
Answer:
use the rule of speed
Explanation:
speed =distance over time
Answer:
Green design
Explanation:
The word ‘Green’ represents designs which are eco friendly and less harmful to humans and other organisms. It helps in the protection of natural resources such as water, air etc.
Green Design are also referred to as techniques and materials that reduce the negative environmental impact of a structure.
The correct answer is A.
Gravitational force will attract any object with mass. It's why you're not floating in the air right now, but rather making contact with the ground. At the same time, since you have mass, you're also attracting other objects right now with gravitational force.