450/340=1.3
1.3 sec is the answer because you take the distance and divid by the rate
Not necessarily. There are many ways to observe the physical properties. Some of the are putting a magnet near the substance,measuring the weight and etc
Answer:
12 grams of hydrogen gas
and 56 grams of nitrogen gas
The molar mass of ammonia is 17 g/mol.
68 grams of ammonia corresponds to
17g/mol
68g
=4moles
4 moles of ammonia will be obtained from
2
4×1
=2 moles of nitrogen and
2
4×3
=6 moles of hydrogen.
The molar masses of nitrogen and hydrogen are 28 g/mol and 2 g/mol respectively.
2 moles of nitrogen corresponds to 2×28=56 grams.
6 moles of hydrogen corresponds to 6×2=12 grams.
the kinetic energy is the same as the canoes weight times its speed times the force of gravity.