<h3>
Answer:</h3>
83.23 %
<h3>
Explanation:</h3>
<u>We are given;</u>
- Mass of the sample mixture is 12.94 g
- Mass of the remaining mixture after sublimation is 2.17 g
We are required to get the mass percent of NH₄Cl in the original sample
<h3>Step 1 : Calculate mass of NH₄Cl in the original sample;</h3>
Mass of NH₄Cl = Total mass of the mixture - remaining mass after sublimation
= 12.94 g - 2.17 g
= 10.77 g
<h3>Step 2: Percent by mass of NH₄Cl in the original sample</h3>
% of NH₄Cl by mass =(Mass of NH₄Cl÷Total mass of original sample)×100
= (10.77 g ÷ 12.94 g) × 100
= 83.23 %
Therefore, the percent by mass of NH₄Cl in the original sample is 83.23%
The water molecule<span> has two </span>hydrogen<span> atoms joined to one </span>oxygen<span> atom by single covalent bonds. </span>Because oxygen is more electronegative than hydrogen<span>, the electrons of the covalent bond spend </span>more <span>time closer to the </span>oxygen<span> then </span>hydrogen<span> which creates a polar covalent bond. Hope this answers your question. Have a great day!</span>
Answer: Vander waals
Explanation:
Tellurium is a chemical element with atomic number 52. It's symbol is Te.
Nitrogen is a chemical element with atomic number 14. Its symbol is N
VANDER WAALS bond is found between Nitrogen and Tellurium, just as in Tellurium(II) Nitrogen.
This bond is relatively weak compared to some other kinds of bonds.
That is why tellurium and most of its compounds are usually brittle and easily grounded.
So, Vander Waals bonds is the answer
The simplest ratios compare only two values, but ratios comparing three or more values are also possible. In any situations in which two or more distinct numbers or quantities are being compared, ratios are applicable. By describing quantities in relation to each other, they explain how chemical formulas can be duplicated or recipes in the kitchen expanded.
Please let me know if I’m wrong
Answer:
Explanation:
21. Atoms are not created or destroyed means that atoms that you begin with are the atoms that you will end with. The catch is that the atoms will rearrange to give you new compounds, but the atoms that you initially had are the atoms you will still have after reaction. For eg, if you started with eggs and made omelet. Omelet is a "new" compound, but the atoms that were in the eggs have rearranged to become the omelet so can you see that atoms were not created or destroyed to make the omelet.
22. Yes because amount of products you make depends on how much reactants you have. For eg, I need two graham cracker(GC), one marshmallow(M), and one chocolate (C) to make a s'more. If I get more of each item then I can make more s'mores and consequently having minimum amounts results in less s'mores that I make.
23. Not possible, due to law of conservation of matter and energy. Atoms cannot be created nor be destroyed, they are simply rearranged. For eg, Taking A + B cannot give you a new compound with a chemical formula D or XZ. A + B can however give you AB which is rearrangement of the starting atoms.
24. Chemical equation is balanced when atoms on reactant side and atoms of product side are in equal counts. I have attached a graphic below for more help.
