<span>The correct answer is 1. compound. There are three elements and not just one so it's not element. Mixtures wouldn't have the same properties that you described but these do so it's a compounds. Solution is not a solid thing but rather a liquid one. The two samples are therefore compounds.</span>
2 NI₃= N₂ + 3 I₂
2 x 394.71 g --------------- 3 x 253.80 g
3.58 g ---------------------- ( mass of I₂ )
3.58 x 3 x 253.80 / 2 x 394.71 =
2725.812 / 789.42 => 3.4529 g of I₂
1 mole I₂ --------------- 253.80 g
?? ----------------------- 3.4529 g
3.4529 x 1 / 253.80 => 0.0136 moles of I₂
Answer C
hope this helps!
Correct Answer: Option a. 6150.64 N
Weight (w) is defined as:
w = mg
So, first we need to find the mass (m) of the steel block using its volume and density.
Mass = Density x Volume
So,
m = 0.08 x 7840 = 627.2 g
Using value of m and g = 9.807, we get
w = 627.2 x 9.807 = 6150.95 Newtons
Therefore, option a is the correct answer.
The slight difference is because the value of g is rounded of to 3 decimal cases.
