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Sloan [31]
3 years ago
14

Part 1: What is a black dwarf? Part 2: What is the fate of Sol?

Chemistry
1 answer:
irinina [24]3 years ago
5 0
Part 1 : a black dwarf is a theoretical stellar remnant part: 2 idk
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Determine the empirical formula of a compound containing 1.71 g of silicon and 8.63 g of chlorine.
Basile [38]

Answer:

The answer to your question is: SiCl₄

Explanation:

Data

amount of Si      1.71 g

amount of Cl     8.63 g

MW Si = 28 g

MW Cl = 35.5

Process (rule of three)

For Si                                                        For Cl

        28 g of Si ------------------ 1 mol                      35.5 g of Cl --------------- 1 mol

          1.71g of Si  ---------------   x                              8.63 g of Cl --------------  x

         x = 1.71 x 1 / 28 = 0.06 mol                          x = 8.63 x 1 / 35.5 = 0.24 mol

Now, divide both results by the lowest of them.

Si = 0.06 mol / 0.06 = 1 molecule of Si     Cl = 0.24 / 0.06 = 4 molecules of Cl

Finally

                     Si₁ Cl₄ or SiCl₄

8 0
3 years ago
Which reaction below represents a balanced, double replacement chemical reaction? A) C2H5OH + 3O2 → 2CO2 + 3H2O B) Rb2O + Cu(C2H
guajiro [1.7K]
Option B. <span>Rb2O + Cu(C2H3O2)2 → 2RbC2H3O2 + CuO is the correct answer. HOPE IT HELPS</span>
8 0
3 years ago
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When swimmers push against the wall of a pool with their feet, they are pushed away from the wall. Which of Newton's laws explai
Alecsey [184]

It would be his third law

8 0
3 years ago
Is a solution that has a pH of 7.52 acidic or basic?
Luda [366]

Answer:

on the PH scale anything with a ph of 1-7 is acidic, anything 7-14 is basic, in this case the solution mentioned in the question is basic.

8 0
3 years ago
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E.) MO(NO2)3<br> What’s the name
astraxan [27]

Answer:

Molybdenum Nitrite

Explanation:

Mo => Molybdenum

NO2 => Nitrite

4 0
3 years ago
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