Answer:
Explanation:
If the gas pops when the top of the test tube is placed close to a flame it is hydrogen,
If it re-ignites a glowing splint it's oxygen.
Otherwise the gas is nitrogen.
Answer:
<u><em>100N</em></u>
Explanation:
<u>Given</u> <u>Required</u>
Effort force = 50N Force applied to a resistance = ??
Ideal Mechanical Advantage (IMA) = 2
<u>Solution</u>
Force applied to a resistance = Effort force x Ideal Mechanical Advantage (IMA)
= 50N x 2
= 100N
Explanation:
i think the answer is A ........ hope this helps
A) I = -1, B) Sr = +2, C) K = +1, D) N = -3, E) S = -2, F) In = +3
