Answer:
compound
Explanation:
We already know that the original substance was pure. If this substance was pure and it was powdery in nature then we have a footing to start from.
Secondly, a 4.93 g of shinny metallic liquid was left behind. This shinny metallic liquid must be an element.
Since there was a loss in mass during heating, it follows that there were other components of the pure powder.
If the reasoning stated above is correct, then the substance is a compound.
Answer:
A magician I saw once made a painting of a dove come to life. The bird literally flew out of the painting.
That happened 10 years ago and I'm still wondering how that is even possible.
Explanation:
Answer: Adding Hydrogen Gas
Explanation:
The Reduction Reaction that occurs during the refinement of Iron Ore is as follows:

Since Hydrogen Gas is a reactant in the equation with Iron ore , adding more hydrogen gas will shift the reaction toward the right side, increase the amount of refined iron produced.
Answer:

Explanation:
10.11 g sample of
contains 22.34%
by mass
According to the law of constant composition the if one sample of
has 22.34% of
by mass then any other sample of
will have the same percentage of the amount of
.
For a sample of 7.09 g we have

The mass of sodium in the required sample is
.
It basically just means that everything is connected. Like the food chain. <span>Within a society, nothing is exclusive. For example, think about humans, and what we have done to forests, and then see what the effect has been.</span>