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Georgia [21]
3 years ago
10

Please...help!

Chemistry
1 answer:
makkiz [27]3 years ago
7 0
The atomic density cuases them to be different u can measure the weight mass density # 28 was cut off picture by the way
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A secondary step in the process to produce ultra-pure silicon is to combine silicon tetrachloride with magnesium. How many grams
mariarad [96]

The mass of silicon, Si produced from the reaction is 329.41 g

<h3>Balanced equation </h3>

SiCl₄ + 2Mg —> 2MgCl₂ + Si

Molar mass of SiCl₄ = 28 + (35.5×4) = 170 g/mol

Mass of SiCl₄ from the balanced equation = 1 × 170 = 170 g

Molar mass of Si = 28 g/mol

Mass of Si from the balanced equation = 1 × 28 = 28 g

From the balanced equation above,

170 g of SiCl₄ reacted to produce 28 g of Si.

<h3>How to determine the mass of Si produced </h3>

From the balanced equation above,

170 g of SiCl₄ reacted to produce 28 g of Si.

Therefore,

2 Kg (i.e 2000 g) of SiCl₄ will react to produce = (2000 × 28) / 170 = 329.41 g of Si

Thus, 329.41 g of Si were obtained from the reaction

Learn more about stoichiometry:

brainly.com/question/14735801

8 0
3 years ago
Help would be much appreciated! i'll mark brainliest
madam [21]

Answer:

group 2

Explanation:

8 0
3 years ago
When Coach Kwan notices that a player is getting tired, she takes out the tired player and substitutes a fresh player. Which typ
kotegsom [21]

Answer: Single replacement Reaction

Explanation:

A replacement reaction is a  chemical reaction in which an  element replaces another element  in a compound especially when it is more reactive than the former. There are two types of replacement reaction, the single and double replacement reaction.

In the former, one  element which  is usually more reactive than the other replaces it . For example in the single replacement, a more reactive metal replaces a less reactive metal and also a more reactive non metal can replace a less reactive non metal.

A + BC → B + AC

looking at the equation aove, you can see that B replaces A

Also In double replacement, the elements in the both reacting compounds are replaced or exchanged to form new compounds as can be illustrated in the equation

AB + CD —— AC + BD

In the case of Coach Kwan, she follows the Single  replacement model as she substitutes a less active and tired player with an active one.  

3 0
3 years ago
A flexible container at an initial volume of 5.120 L contains 8.500 mol of gas.
SOVA2 [1]

Answer:

30.05 mol

Explanation:

solving the proportion

V1 / n1 = V2 / n2

5.120 L            18.10 L

–––––––– = ––––––

8.500 mol         x

x = 30.05 mol

6 0
3 years ago
While making ice tea, you reference the solubility graph. What temperature would be the BEST to heat the tea when adding sugar,
katrin2010 [14]
D 39 https://www.usatestprep.com/modules/gallery/files/12/1298/1298.jpg
7 0
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